relation extraction of NLP
文章目录
算法
Boostrap Learning
Snowball
- Boostrap 的一种改良算法
- 2000 年发表
参考教程
Distant Supervision
UIE
传统 UIE
参考:
- https://github.com/PaddlePaddle/PaddleNLP/tree/develop/slm/model_zoo/uie#%E5%85%B3%E7%B3%BB%E6%8A%BD%E5%8F%96
基于 LLM 的 UIE
抽取对象
材料科学
PSPP
参考:
解说:processing-structure-property-performance
记录抽取结果对象的位置
NER 命名实体识别 prompt
参考:
例子一
| |
使用 openai (LLM) + prompts 做关系抽取
chatextract 模式
论文:
- Extracting Accurate Materials Data from Research Papers with Conversational Language Models and Prompt Engineering - Example of ChatGPT
使用疑问记录:
- 一对一关系抽取结果,也可能是抽取的错误结果,需要验证
多对多抽取,有可能会把多个材料当成一个材料抽取,导致两个关系变成一个关系
例如:两个红外器件被抽取成一个“nBn and complementary barrier HgCdTe detectors”
- nBn
- complementary barrier HgCdTe
构建流程
过滤句子
- 过滤句子是否包含想要的信息
- 可能会 1% 合格
由有效句子 –> 扩展成一段话 passage
- 文章 title
- 前一句
- 当前句
- 后一句?
句子结构类型分类
- 不同类型的句子适用不同的抽取方式
prompt
是否包含多个关系:
- 一个
- 多个
抽取
单个关系
分别询问各个 slot
- 材料 material name
- 数值 value
- 单位 unit
- 反例答案,抛弃结果
多个关系
- 不直接抽取结果
- 抽取结果成 表格形式
避免错误的方法:
- 逐个表格字段中的数据,询问:
是否在提供的文本中存在 - 这里也要允许
negative answer
- 逐个表格字段中的数据,询问:
注意:
要允许反例答案
negative answer, 避免没有数据,chatgpt 造数据- 解释:It is important to explicitly allow for an option of a negative answer, reducing the chance that the model provides an answer even though not enough data is provided, limiting the possibility of hallucinating the data.
prompt 组织模式
conversation 模式 Vs single prompt 模式
conversation 模式
- 抽取结果更准确
- 能够抽取到 negative answer
- 能够保持规定的格式规范
原因分析
- 历史对话信息保持完善
规定是否式问答
不规定是否式问
- chatgpt 容易回答一长短话
- 不方便规范话处理流程
实战
句子分类
Answer "Yes" or "No" only. Does the following text contain a value of [property]? sentence ------ Answer "Yes" or "No" only. Does the following text contain a value of [reduction peak]? A new reduction peak appears at around 0.62 V (vs Li/Li+) after adding 0.15 M LiDFP in the STD electrolyte, indicating the reductive decomposition of LiDFP for SEI formation
关系数量
Answer "Yes" or "No" only. Does the following text contain more than one value of [property]? [sentence] ------ Answer "Yes" or "No" only. Does the following text contain more than one value of [reduction peak]? A new reduction peak appears at around 0.62 V (vs Li/Li+) after adding 0.15 M LiDFP in the STD electrolyte, indicating the reductive decomposition of LiDFP for SEI formation
单个关系抽取
value
Give the number only without units, do not use a full sentence. If the value is not present type "None". What is the value of the [property] in the following text? [text] ---- Give the number only without units, do not use a full sentence. If the value is not present type "None". What is the value of the [reduction peak] in the following text? A new reduction peak appears at around 0.62 V (vs Li/Li+) after adding 0.15 M LiDFP in the STD electrolyte, indicating the reductive decomposition of LiDFP for SEI formation
unit
Give the unit only, do not use a full sentence. If the unit is not present type "None". What is the value of the [property] in the following text? text --- Give the unit only, do not use a full sentence. Ifthe unit is not present type "None". What is the value of the [reduction peak] in the following text? A new reduction peak appears at around 0.62 V (vs Li/Li+) after adding 0.15 M LiDFP in the STD electrolyte, indicating the reductive decomposition of LiDFP for SEI formation
material
Give the material name only, do not use a full sentence. If the material name is not present type "None". What is the name of the material for which [property] is given in the following text. [text] ----- Give the material name only, do not use a full sentence. If the material name is not present type "None". What is the name of the material for which [reduction peak] is given in the following text. A new reduction peak appears at around 0.62 V (vs Li/Li+) after adding 0.15 M LiDFP in the STD electrolyte, indicating the reductive decomposition of LiDFP for SEI formation
多个关系抽取
分类
Answer "Yes" or "No" only. Does the following text contain a value of [reduction peak]? The first lithiation of Li/Si-C half- cell also exhibits a reduction peak at 1.0 V vs. Li/Li+, which implies a one-electron reduction of DMVC-OCF3 to produce the DMVC radical and OCF3 anion (Supplementary Fig. 8a and c). The second peak (see Supplementary Fig. 8a) can be attributed to the reduction of the OCF3 anion to form LiF because the LiF peak intensity was drastically increased after lithiation to 0.45 V (Supplementary Fig. 8a, b).
关系数量判别
Answer "Yes" or "No" only. Does the following text contain more than one value of [reduction peak]? The first lithiation of Li/Si-C half- cell also exhibits a reduction peak at 1.0 V vs. Li/Li+, which implies a one-electron reduction of DMVC-OCF3 to produce the DMVC radical and OCF3 anion (Supplementary Fig. 8a and c). The second peak (see Supplementary Fig. 8a) can be attributed to the reduction of the OCF3 anion to form LiF because the LiF peak intensity was drastically increased after lithiation to 0.45 V (Supplementary Fig. 8a, b).
多个关系以 csv (表格) 形式抽取
Use only data present in the text. If data is not present in the text, type "None". Summarize the value of the [property] in the following text in a form of a table consisting of: Material, Value, Unit text ----- Use only data present in the text. If data is not present in the text, type "None". Summarize the value of the [reduction peak] in the following text in a form of a table consisting of: Material, Value, Unit The first lithiation of Li/Si-C half- cell also exhibits a reduction peak at 1.0 V vs. Li/Li+, which implies a one-electron reduction of DMVC-OCF3 to produce the DMVC radical and OCF3 anion (Supplementary Fig. 8a and c). The second peak (see Supplementary Fig. 8a) can be attributed to the reduction of the OCF3 anion to form LiF because the LiF peak intensity was drastically increased after lithiation to 0.45 V (Supplementary Fig. 8a, b).
验证结果
材料
There is a possibility that the data you extracted is incorrect. Answer "Yes" or "No" only. Be very strict. Is "[material]" the [nth] compound for which the value of [property] is given in the following text? Make sure it is a real compound. [text] ---- There is a possibility that the data you extracted is incorrect. Answer "Yes" or "No" only. Be very strict. Is "[DMVC-OCF3]" the [first] compound for which the value of [reduction peak] is given in the following text? Make sure it is a real compound. The first lithiation of Li/Si-C half-cell also exhibits a reduction peak at 1.0 V vs. Li/Li+, which implies a one-electron reduction of DMVC-OCF3 to produce the DMVC radical and OCF3 anion (Supplementary Fig. 8a and c). The second peak (see Supplementary Fig. 8a) can be attributed to the reduction of the OCF3 anion to form LiF because the LiF peak intensity was drastically increased after lithiation to 0.45 V (Supplementary Fig. 8a, b).
单位
There is a possibility that the data you extracted is incorrect. Answer "Yes" or "No" only. Be very strict. Is [unit] the unit of the [property] for the [nth] material in the following text? [text] ---- There is a possibility that the data you extracted is incorrect. Answer "Yes" or "No" only. Be very strict. Is [V] the unit of the [reduction peak] for the [first] material in the following text? The first lithiation of Li/Si-C half-cell also exhibits a reduction peak at 1.0 V vs. Li/Li+, which implies a one-electron reduction of DMVC-OCF3 to produce the DMVC radical and OCF3 anion (Supplementary Fig. 8a and c). The second peak (see Supplementary Fig. 8a) can be attributed to the reduction of the OCF3 anion to form LiF because the LiF peak intensity was drastically increased after lithiation to 0.45 V (Supplementary Fig. 8a, b).
数值
There is a possibility that the data you extracted is incorrect. Answer "Yes" or "No" only. Be very strict. Is [value] the value of the [property] for the In [nth] material in the following text? [text] ----- There is a possibility that the data you extracted is incorrect. Answer "Yes" or "No" only. Be very strict. Is [1.0] the value of the [reduction peak] for the [first] material in the following text? The first lithiation of Li/Si-C half-cell also exhibits a reduction peak at 1.0 V vs. Li/Li+, which implies a one-electron reduction of DMVC-OCF3 to produce the DMVC radical and OCF3 anion (Supplementary Fig. 8a and c). The second peak (see Supplementary Fig. 8a) can be attributed to the reduction of the OCF3 anion to form LiF because the LiF peak intensity was drastically increased after lithiation to 0.45 V (Supplementary Fig. 8a, b).
红外例子
样本一, 单个关系
原始文本:
Typical operating temperature for QWIP detectors are in the region of 40-100 K. The bias across each QWIP can be adjusted separately, although it is desirable to apply the same bias to both colors.
assert contain
Answer "Yes" or "No" only. Does the following text contain a value of [operating temperature]? Typical operating temperature for QWIP detectors are in the region of 40-100 K. The bias across each QWIP can be adjusted separately, although it is desirable to apply the same bias to both colors.
assert relation num
Answer "Yes" or "No" only. Does the following text contain more than one value of [operating temperature]? Typical operating temperature for QWIP detectors are in the region of 40-100 K. The bias across each QWIP can be adjusted separately, although it is desirable to apply the same bias to both colors.
一对一,抽取
值
Give the number only without units, do not use a full sentence. If the value is not present type "None". What is the value of the [operating temperature] in the following text? Typical operating temperature for QWIP detectors are in the region of 40-100 K. The bias across each QWIP can be adjusted separately, although it is desirable to apply the same bias to both colors.
单位
Give the unit only, do not use a full sentence. If the unit is not present type "None". What is the value of the [operating temperature] in the following text? text Typical operating temperature for QWIP detectors are in the region of 40-100 K. The bias across each QWIP can be adjusted separately, although it is desirable to apply the same bias to both colors.
器件
Give the device(detector) name only, do not use a full sentence. If the device(detector) name is not present type "None". What is the name of the material(detector) for which [operating temperature] is given in the following text. Typical operating temperature for QWIP detectors are in the region of 40-100 K. The bias across each QWIP can be adjusted separately, although it is desirable to apply the same bias to both colors.
样本二 – 多个关系抽取
原始文本:
The detectivity for nBn T2SLs InAs/GaSb (10 ML/10 ML) and B−Al 0.2 Ga 0.8 Sb is presented for T = 300 K. The maximum D * = 4×10 8 cmHz 1/2 /W and quantum efficiency 15% were estimated .;D * = 2×10 9 cmHz 1/2 /W was re− ported for nBn InAsSb/AlAsSb detectors .;nBn and complementary barrier HgCdTe detectors operating in the MWIR range at T = 200 K reach detectivity of 6×10 9 and 2×10 10 cmHz 1/2 /W, respectively .
赋值变量
set variable infrared-text to following text and do not repeat, if your have alread set it, just anwser done: The detectivity for nBn T2SLs InAs/GaSb (10 ML/10 ML) and B−Al 0.2 Ga 0.8 Sb is presented for T = 300 K. The maximum D * = 4×10 8 cmHz 1/2 /W and quantum efficiency 15% were estimated .;D * = 2×10 9 cmHz 1/2 /W was re− ported for nBn InAsSb/AlAsSb detectors .;nBn and complementary barrier HgCdTe detectors operating in the MWIR range at T = 200 K reach detectivity of 6×10 9 and 2×10 10 cmHz 1/2 /W, respectively .
存在判断
Answer "Yes" or "No" only. Does the following text contain a value of [detectivity]? {infrared-text}是否是一对一
Answer "Yes" or "No" only. Does the following text contain more than one value of [detectivity]? {infrared-text}多对多抽取
Use only data present in the text. If data is not present in the text, type "None". Summarize the value of the [detectivity] in the following text in a form of a table consisting of: device(infrared detector), value, unit {infrared-text}
句子收集
ionic conductivity
Use only data present in the text. If data is not present in the text, type "None". Summarize the value of the [ionic conductivity] in the following text in a form of a table consisting of: Material, Value, Unit the ionic conductivity of the electrolyte 1 M LiPF/FEC atroom temperature still can reach 4.26 mS cm l, which is lowerthan that of the electrolyte 1 M LiPF,/FEC + EMC (3/7, v/vof 8.88 mS cm-l.
reduction peak
park2021@choi dioxolone derivatives DMVC-OCF3 DMVC-OTMS.pdf
The first lithiation of Li/Si-C half-cell also exhibits a reduction peak at 1.0 V vs. Li/Li+, which implies a one-electron reduction of DMVC-OCF3 to produce the DMVC radical and OCF3 anion (Supplementary Fig. 8a and c). The second peak (see Supplementary Fig. 8a) can be attributed to the reduction of the OCF3 anion to form LiF because the LiF peak intensity was drastically increased after lithiation to 0.45 V (Supplementary Fig. 8a, b).
shi2018@xu dendrite-suppressing additive LiPO2F2, LiDFP.pdf
As shown in Supporting Information (SI) Figure S1, a new reduction peak appears at ∼0.62 V (vs Li/Li+) after adding 0.15 M LiDFP in the STD electrolyte, indicating the reductive decomposition of LiDFP for SEI formation.
shi2018@xu_si.pdf
According to Choi et al.,1 For the STD electrolyte, the peaks located at about 2.0 V and 1.5 V (vs. Li/Li+) are ascribed to the decomposition of DEC, while the small peak located at 0.50 V is ascribed to the decomposition of EC. After the addition of LiDFP, a new reduction peak appears at about 0.62 V manifesting the electrochemical decomposition of LiDFP for the SEI formation. This value is close to the electrochemical reduction peak of 0.59 V for LiDFP in Li||graphite cells reported by Kim et al.2
xia2017@liu fluorinated electrolytes LiDFOB FEC.pdf
This result indicates that FEC is prone to be reduced at a higher potential. By contrast, in the first negative scan of the electrolyte 1 M LiPF6/FEC−EMC (3:7, v/v), the huge reduction peaks at ca. 2.0 V disappear and then two weak reduction peaks emerge at 1.5 and 0.7 V, which are related to the reductive decomposition of FEC and EMC, respectively.
跨域问题测试
- 同源段落,说法
Use only data present in the text. If data is not present in the text, type "None". Summarize the value of the [reduction peak] in the following text in a form of a table consisting of: Material, Value, Unit The first lithiation of Li/Si-C half- cell also exhibits a reduction peak at 1.0 V vs. Li/Li+, which implies a one-electron reduction of DMVC-OCF3 to produce the DMVC radical and OCF3 anion (Supplementary Fig. 8a and c). The second peak (see Supplementary Fig. 8a) can be attributed to the reduction of the OCF3 anion to form LiF because the LiF peak intensity was drastically increased after lithiation to 0.45 V (Supplementary Fig. 8a, b).
不同段落
红外例子
Answer "Yes" or "No" only. Does the following text contain a value of [cutoff wavelength]? Answer "Yes" or "No" only. Does the following text contain more than one value of [cutoff wavelength]? Give the number only without units, do not use a full sentence. If the value is not present type "None". What is the value of the [cutoff wavelength] in the following text? Give the unit only, do not use a full sentence. If the unit is not present type "None". What is the value of the [cutoff wavelength] in the following text? Give the device(detector) name only, do not use a full sentence. If the device(detector) name is not present type "None". What is the name of the material(detector) for which [cutoff wavelength] is given in the following text. Give the device name only, do not use a full sentence. If the device name is not present type "None". What is the name of the material(detector) for which [cutoff wavelength] is given in the following text. Solar-blind photodetectors based on Zn2GeO4 (ZGO) nanowires (NWs) with high transparency and good flexibility were successfully fabricated on polyethylene terephthalate (PET) substrate using a facile all solution-processible method. The electrodes and functional channels are constructed with silver NWs (AgNWs) and ZGO NWs respectively, using spray coating method. The spray-coated all-NW device exhibited high transparency, good mechanical bending stability, high photoresponse, and short cutoff wavelength. The Schottky barrier between the Ag-ZGO NWs together with the junction barrier between interconnecting ZGO NWs contributed to high photoresponse and improved switching time in the devices. We propose that the unique energy band structure of the ZGO NW networks provides additional mechanism to further reduce the cutoff wavelength in the solar-blind photodetectors. Responsivity of the device over different wavelength was measured by scanning the light generated from a xenon light source from 220 nm to 400 nm, as shown in Fig. 3d. The device exhibited increasing respond to the incident light when the wavelength is close to 268 nm (the bandgap of ZGO NWs, ~4.6 eV). The photoresponse continued to increase when the wavelength was reduced and reached the maximum value at 250 nm. The cutoff wavelength of the device was ~300 nm.
锂电池例子
Answer "Yes" or "No" only. Does the following text contain a value of [Galvanostatic charge and discharge performances]? Answer "Yes" or "No" only. Does the following text contain more than one value of [Galvanostatic charge and discharge performances]? Give the number only without units, do not use a full sentence. If the value is not present type "None". What is the value of the [Galvanostatic charge and discharge performances] in the following text? Give the number only without units, do not use a full sentence. If the value is not present type "None". What is the value of the [Galvanostatic charge and discharge performances] (which include charge and discharge value) in the following text? Give the unit only, do not use a full sentence. If the unit is not present type "None". What is the value of the [Galvanostatic charge and discharge performances] in the following text? # 多对多抽取 Use only data present in the text. If data is not present in the text, type "None". Summarize the value of the [Galvanostatic charge and discharge performances] in the following text in a form of a table consisting of: Cathode, Anode, Electrolytes,Cycles, Type, Value, Unit Carbon-coated LiFeP04 (Hefei Kejing Materials Technology Co.), UIO/Li-IL and Ketjen black powders were added to N- methyl-2-pyrrolidone (NMP) subsequently in a weight ratio of 4 : 4 : 2 and stirred for 24 h to ensure homogeneous mixing. The obtained slurry was coated on stainless steel current collectors, and after solvent volatilization, the slurry was heated at 120 oc in a vacuum for 6 h. The weights of the active material in the electrodes were 1—2 mg. Solid-state lithium batteries were assembled using these cathodes, PEO-n-UIO solid electrolytes and a metallic Li anode in a Swagelok-type cell under a 10 N pressure. The internal resistances of the batteries were measured by AC impedance spectroscopy. Galvanostatic charge and discharge performances of solid-state batteries were investigated using a LANHE CT2001A charge/discharge system (Wuhan LAND Electronics Co.) in the potential range from 2.8 to 4 V at 60 ℃. The low resistance of the battery enables high performances, as presented in Fig. 5b and c. In the first cycle, the specific charge capacity of the battery is ~170 mA h g-1, while the specific discharge capacity is ~151 mA h at a rate of 0.5C; therefore, the coulombic efficiency is 89%. However, the coulombic efficiency is greatly increased and remains at in the following cycles. The specific discharge capacities of the battery are 157, 152 and 144 mA h in the 10th, 50th and 100th cycles, respectively, and the specific discharge capacity of the battery still remains at 95% after 100 cycles. The perfor- mances of the solid-state battery are markedly improved by the incorporation of nanostructured UIO/Li-IL fillers in PEO (Fig. 5c). Compared with solid-state batteries reported in the the performance of our battery is very compet- itive. In ref. 15, the discharge capacity of the batteries with the PEO-based composite polymer electrolytes was about 140 mA h at 0.5C and 60 oc; in the work of Goodenough et al.,29 the initial discharge capacity of the battery with the PEO-based composite polymer electrolytes was 149 mA h g¯ , and it decreased to 139 mA h after 100 cycles at 0.2C and 55 oc; Zhang et al.2' achieved a high of 155 mA h at 0.1C and 60 oc for the båttery-svrtæthe PEO-based composite polymer electrolytes, but the capacity faded to 13% in 10() cycles. The better performances of the solid-state lithium battery in the present work could be attributed to the high lithium ion conductivity and excellent stability against the lithium electrode of solid polymer electrolytes, both of which are due to the incorporation of the nanoporous multifunctional UIO/Li-1L fillers.
NMC111/Li cell meanings NMC111 is cathode, Li is anode. Answer "Yes" or "No" only. Does the following text contain a value of [cathode loading]? Answer "Yes" or "No" only. Does the following text contain more than one value of [cathode loading]? Give the number only without units, do not use a full sentence. If the value is not present type "None". What is the value of the [cathode loading] in the following text? Give the unit only, do not use a full sentence. If the unit is not present type "None". What is the value of the [cathode loading] in the following text? Give the cathode name only, do not use a full sentence. If the cathode name is not present type "None". What is the name of the cathode for which [cathode loading] is given in the following text. # 正文 The standard electrolyte (STD) is 1.2 M LiPF6 in EC/EMC (3:7 by volume). Battery-grade carbonates solvents and lithium hexafluorophosphate (LiPF6) were obtained from BASF. Additives are added in weight percentage based on the total mass of electrolyte. Lithium bis(oxalato) borate (LiBOB), lithium 4-pyridyl trimethyl borate (LPTB), and lithium catechol dimethyl borate (LiCDMB) were synthesized and added as 2 wt % to the STD electrolyte. The composite cathodes were obtained from a commercial supplier. The composite LiNi0.5Mn1.5O4 electrode is composed of active material (92%), conductive carbon (4%), and PVDF binder (4%). The cathode loading is 15.9 mg/cm2. The 2032-type coin cells were constructed in an argon-filled glovebox with a trilayer polypropylene/polyethylene (PP/PE/PP) separator (d = 19 mm, Celgard) and one layer of glass fiber separator (d = 16 mm, thickness = 0.67 mm, Whatman) and 100 μL of electrolyte. Carbon black electrode (Super C65, d = 15 mm) half-cells were built with a trilayer polypropylene/polyethylene (PP/PE/PP) separator (d = 19 mm, Celgard) and one layer of glass fiber separator (d = 16 mm, thickness = 0.67 mm, Whatman) and 100 μL of electrolyte. Comparable cycling data have been obtained using only polyolefin separators. Electrochemical impedance spectroscopy (EIS) of symmetric LiNi0.5Mn1.5O4/LiNi0.5Mn1.5O4 cells was performed on a Bio-Logic potentiostat/galvanostat. Perturbation is 10 mV with the frequency range 1000 kHz–20 mHz. Symmetric cells were produced in duplicate.
Answer "Yes" or "No" only. Does the following text contain a value of [weight percentage]? Answer "Yes" or "No" only. Does the following text contain more than one value of [weight percentage]? # not one2one 抽取 Use only data present in the text. If data is not present in the text, type "None". Summarize the value of the [weight percentage] in the following text in a form of a table consisting of: electrolyte, additive, Value, Unit # 正文 The standard electrolyte (STD) is 1.2 M LiPF6 in EC/EMC (3:7 by volume). Battery-grade carbonates solvents and lithium hexafluorophosphate (LiPF6) were obtained from BASF. Additives are added in weight percentage based on the total mass of electrolyte. Lithium bis(oxalato) borate (LiBOB), lithium 4-pyridyl trimethyl borate (LPTB), and lithium catechol dimethyl borate (LiCDMB) were synthesized and added as 2 wt % to the STD electrolyte. The composite cathodes were obtained from a commercial supplier. The composite LiNi0.5Mn1.5O4 electrode is composed of active material (92%), conductive carbon (4%), and PVDF binder (4%). The cathode loading is 15.9 mg/cm2. The 2032-type coin cells were constructed in an argon-filled glovebox with a trilayer polypropylene/polyethylene (PP/PE/PP) separator (d = 19 mm, Celgard) and one layer of glass fiber separator (d = 16 mm, thickness = 0.67 mm, Whatman) and 100 μL of electrolyte. Carbon black electrode (Super C65, d = 15 mm) half-cells were built with a trilayer polypropylene/polyethylene (PP/PE/PP) separator (d = 19 mm, Celgard) and one layer of glass fiber separator (d = 16 mm, thickness = 0.67 mm, Whatman) and 100 μL of electrolyte. Comparable cycling data have been obtained using only polyolefin separators. Electrochemical impedance spectroscopy (EIS) of symmetric LiNi0.5Mn1.5O4/LiNi0.5Mn1.5O4 cells was performed on a Bio-Logic potentiostat/galvanostat. Perturbation is 10 mV with the frequency range 1000 kHz–20 mHz. Symmetric cells were produced in duplicate.
Question: what the cathode and anode in the text: NMC111/Li cell Anwser: NMC111 is cathode, Li is anode. Answer "Yes" or "No" only. Does the following text contain a value of [cathode loading]? Answer "Yes" or "No" only. Does the following text contain more than one value of [cathode loading]? Give the number only without units, do not use a full sentence. If the value is not present type "None". What is the value of the [cathode loading] in the following text? Give the unit only, do not use a full sentence. If the unit is not present type "None". What is the value of the [cathode loading] in the following text? Give the cathode name only, do not use a full sentence. If the cathode name is not present type "None". What is the name of the cathode for which [cathode loading] is given in the following text. # 正文 The standard electrolyte (STD) is 1.2 M LiPF6 in EC/EMC (3:7 by volume). Battery-grade carbonates solvents and lithium hexafluorophosphate (LiPF6) were obtained from BASF. Additives are added in weight percentage based on the total mass of electrolyte. Lithium bis(oxalato) borate (LiBOB), lithium 4-pyridyl trimethyl borate (LPTB), and lithium catechol dimethyl borate (LiCDMB) were synthesized and added as 2 wt % to the STD electrolyte. The composite cathodes were obtained from a commercial supplier. The composite LiNi0.5Mn1.5O4 electrode is composed of active material (92%), conductive carbon (4%), and PVDF binder (4%). The cathode loading is 15.9 mg/cm2. The 2032-type coin cells were constructed in an argon-filled glovebox with a trilayer polypropylene/polyethylene (PP/PE/PP) separator (d = 19 mm, Celgard) and one layer of glass fiber separator (d = 16 mm, thickness = 0.67 mm, Whatman) and 100 μL of electrolyte. Carbon black electrode (Super C65, d = 15 mm) half-cells were built with a trilayer polypropylene/polyethylene (PP/PE/PP) separator (d = 19 mm, Celgard) and one layer of glass fiber separator (d = 16 mm, thickness = 0.67 mm, Whatman) and 100 μL of electrolyte. Comparable cycling data have been obtained using only polyolefin separators. Electrochemical impedance spectroscopy (EIS) of symmetric LiNi0.5Mn1.5O4/LiNi0.5Mn1.5O4 cells was performed on a Bio-Logic potentiostat/galvanostat. Perturbation is 10 mV with the frequency range 1000 kHz–20 mHz. Symmetric cells were produced in duplicate.
Answer "Yes" or "No" only. Does the following text contain a value of [surface film resistance(Rfilm)]? Answer "Yes" or "No" only. Does the following text contain more than one value of [surface film resistance(Rfilm)]? # not one2one 抽取 Use only data present in the text. If data is not present in the text, type "None". Summarize the value of the [surface film resistance(Rfilm)] in the following text in a form of a table consisting of: cathode, anode, electrolyte, Value, Unit Figure 4. Equivalent circuit (a) and EIS spectra (b) of LiNi0.5Mn1.5O4/LiNi0.5Mn1.5O4 symmetric cells using the (in black) STD, (in red) STD + 2% LiBOB electrolyte, (in blue) STD + 2% LPTB electrolyte, and (in pink) STD + 2% LiCDMB electrolyte. After two full cycles between 3.3 and 4.9 V vs Li/Li+, LiNi0.5Mn1.5O4/Li cells were charged to a 50% state of charge (50% SOC, ca. 4.68 V vs Li/Li+) and disassembled, and the cathodes were extracted and used to construct symmetric LiNi0.5Mn1.5O4/LiNi0.5Mn1.5O4 cells. The electrochemical impedance spectra of symmetric cells are measured; equivalent circuit and the corresponding EIS Nyquist plots are provided in Figure 4. (26) The Nyquist plots contain two semicircles. The first semicircle is typically attributed to the surface film resistance (Rfilm), while second semicircle is typically attributed to charge transfer resistance (Rct). (26) LiNi0.5Mn1.5O4 electrodes cycled with the STD electrolyte have the smallest surface film resistance (Rfilm = 7.5 Ω), consistent with very thin surface films on the cathodes. Cathodes cycled with electrolyte containing 2% LiBOB show both greater surface film resistance (Rfilm = 11.5 Ω) and charge transfer resistance, suggesting that addition of LiBOB results in the formation of a thicker CEI than the STD electrolyte. Thus, the reactivity of LiBOB with the surface of the LiNi0.5Mn1.5O4 cathode occurs at slightly lower potential than observed in the LSV data. The surface film resistance is further increased for cathodes cycled with electrolyte containing 2% LPTB, which is around 19 Ω, suggesting that surface film formed by LPTB is thicker. Interestingly, the charge transfer resistance is smaller for the electrode cycled with electrolyte containing 2% LPTB, but the source for this difference is unclear at this time. Cathodes cycled with electrolyte containing 2% LiCDMB have the greatest surface film resistance (Rfilm = 24.5 Ω) and also largest charge transfer resistance (data provided in inset to Figure 4), indicating that the surface film formed by LiCDMB is the most resistive and thus most likely the thickest.
跨域段落探测
样例一
what are the related paragraphs? paragraph 1: The anionic borate additives are electron-rich, easily oxidized, and polarized toward the cathode surface upon initial cell charging. All of the lithium borate electrolyte additives have been reported to generate a borate-rich stable passivating CEI which improves the performance of LiNi0.5Mn1.5O4 cathodes. In an effort to develop a better understanding of the structure, function, and formation of cathode surface films, a direct comparison of the three different lithium borate additives has been conducted. The passivation layers on LiNi0.5Mn1.5O4 cathodes have been analyzed via a combination of in-situ electrochemical and ex-situ surface analysis methods including hard X-ray photoelectron spectros copy (HAXPES), XPS, FT-IR, SEM, and TEM. paragraph 2: Lithium bis(oxalato) borate (LiBOB), lithium 4-pyridyl trimethyl borate (LPTB), and lithium catechol dimethyl borate (LiCDMB) were synthesized and added as 2 wt % to the STD electrolyte. The composite cathodes were obtained from a commercial supplier. The composite LiNi0.5Mn1.5O4 electrode is composed of active material (92%), conductive carbon (4%), and PVDF binder (4%). The cathode loading is 15.9 mg/cm2 . The 2032-type coin cells were constructed in an argon- filled glovebox with a trilayer polypropylene/polyethylene (PP/PE/PP) separator (d = 19 mm, Celgard) and one layer of glass fiber separator (d = 16 mm, thickness = 0.67 mm, Whatman) and 100 μL of electrolyte. Carbon black electrode (Super C65, d = 15 mm) half-cells were built with a trilayer polypropylene/polyethylene (PP/PE/PP) separator (d = 19 mm, Celgard) and one layer of glass fiber separator (d = 16 mm, thickness = 0.67 mm, Whatman) and 100 μL of electrolyte. Comparable cycling data have been obtained using only polyolefin separators. Cells were scanned from open circuit potential (OCV) to 6.0 V (high potential) or 0.01 V (low potential) vs Li/Li+ at a rate of 0.1 mV s−1 with Bio-Logic potentiostat/galvanostat at a controlled temperature of 25.0 °C. A uniform concentration of 2 wt % for each additive was used to afford better surface film characterization. The HOMO and LUMO energy calculations were performed on the anions of LiBOB, LPTB, and LiCDMB using the Gaussian 03 package (B3LYP/6-311+G(2d,p)). paragraph 3: Figure 4. Equivalent circuit (a) and EIS spectra (b) of LiNi0.5Mn1.5O4/LiNi0.5Mn1.5O4 symmetric cells using the (in black) STD, (in red) STD + 2% LiBOB electrolyte, (in blue) STD + 2% LPTB electrolyte, and (in pink) STD + 2% LiCDMB electrolyte. paragraph 4: After two full cycles between 3.3 and 4.9 V vs Li/Li+, LiNi0.5Mn1.5O4/Li cells were charged to a 50% state of charge (50% SOC, ca. 4.68 V vs Li/Li+) and disassembled, and the cathodes were extracted and used to construct symmetric LiNi0.5Mn1.5O4/LiNi0.5Mn1.5O4 cells. The electrochemical impedance spectra of symmetric cells are measured; equivalent circuit and the corresponding EIS Nyquist plots are provided in Figure 4. (26) The Nyquist plots contain two semicircles. The first semicircle is typically attributed to the surface film resistance (Rfilm), while second semicircle is typically attributed to charge transfer resistance (Rct). (26) LiNi0.5Mn1.5O4 electrodes cycled with the STD electrolyte have the smallest surface film resistance (Rfilm = 7.5 Ω), consistent with very thin surface films on the cathodes. Cathodes cycled with electrolyte containing 2% LiBOB show both greater surface film resistance (Rfilm = 11.5 Ω) and charge transfer resistance, suggesting that addition of LiBOB results in the formation of a thicker CEI than the STD electrolyte. Thus, the reactivity of LiBOB with the surface of the LiNi0.5Mn1.5O4 cathode occurs at slightly lower potential than observed in the LSV data. The surface film resistance is further increased for cathodes cycled with electrolyte containing 2% LPTB, which is around 19 Ω, suggesting that surface film formed by LPTB is thicker. Interestingly, the charge transfer resistance is smaller for the electrode cycled with electrolyte containing 2% LPTB, but the source for this difference is unclear at this time. Cathodes cycled with electrolyte containing 2% LiCDMB have the greatest surface film resistance (Rfilm = 24.5 Ω) and also largest charge transfer resistance (data provided in inset to Figure 4), indicating that the surface film formed by LiCDMB is the most resistive and thus most likely the thickest.
多对多红外抽取
例子一
Use only data present in the text. If data is not present in the text, type "None". Summarize the value of the [detectivity(its symbol is D*)] in the following text in a form of a table consisting of: device(detector), Value, Unit Finally, advanced technology similar to the island approach has permitted hybridizing Pbo.aoSno.20Te detectors onto a silicon CCD.;It avoids problems due to the thermal expansion mismatch of the substrates.;Pb0.80Sno.;~oTe detectorshave been hybridized on a silicon CCD.;Their detectivity was measured by direct readout with a preamplifier to be higher than 2 X 110" W-' * cm * Hz'/' (FOV = 180").;An increase in detector resistance, to improve the coupling with the CCD, should give detectivities of better than 5 X 10" W-l * cm Hz112. The responsivity and noise were also measured with direct coupling to a low-noise preamplifier.;The values obtained lead to quantum efficiencies of around 50 percent, and detectivities of about 2 X 10" W-l * cm . Hz1/' at 77 K for a 180" field of view (FOV).;Because of the evolution of hybridization technology, it would seem reasonable to assume that diode resistances that are comparable with conventional resistances (RA = 5 52 * cm2 at 77 K) will be obtained in the near future.;This increase in resistance would permit obtaining detectivities higher than 5 X 10" W-' cm .;Hz'/'.;VII.;CONCLUSION High-performance multiplexing electronics (low noise, small pixel area) are essential for the fabrication of hybrid arrays of several thousand photovoltaic infrared detectors.;The tech-nology involved in hybridizing very large numbers of detectors onto silicon must also be mastered.;CCD's seem to be a very suitable way of assuring the electronic readout because of tl1ei.r low noise level and large dynamic range.;The best coupling technique seems to be by direct injection. The detectivity for nBn T2SLs InAs/GaSb (10 ML/10 ML) and B−Al 0.2 Ga 0.8 Sb is presented for T = 300 K. The maximum D * = 4×10 8 cmHz 1/2 /W and quantum efficiency 15% were estimated .;D * = 2×10 9 cmHz 1/2 /W was re− ported for nBn InAsSb/AlAsSb detectors .;nBn and complementary barrier HgCdTe detectors operating in the MWIR range at T = 200 K reach detectivity of 6×10 9 and 2×10 10 cmHz 1/2 /W, respectively .
单位验证
latex 单位
正例测试
F/cm^{2} is same as F cm-2. F \cdot cm^{-2} is same as F cm -2. There is a possibility that the data you extracted is incorrect. Answer "Yes" or "No" only. Be very strict. Is "mg \cdot cm^{-1}" the unit in latex format which may display as plain text in the following text? he hybrid nanoarrays exhibited a high specific capacitance of 2033 F g−1 at the current density of 5 mA cm−2 along with a mass loading as high as 19.5 mg cm−1--- 第一轮对话 be very strict. answer "Yes" or "No" only. does the following text contain value and unit? he hybrid nanoarrays exhibited a high specific capacitance of 2033 F g−1 at the current density of 5 mA cm−2 along with a mass loading as high as 19.5 mg cm−1 ----- 第二轮对话 F/cm^{2} is same as F cm-2. F \cdot cm^{-2} is same as F cm -2. Answer "Yes" or "No" only. Be very strict. Is "F/g" the unit in latex format which may display as plain text in the following text? he hybrid nanoarrays exhibited a high specific capacitance of 2033 F g−1 at the current density of 5 mA cm−2 along with a mass loading as high as 19.5 mg cm−1负例测试
F/cm^{2} is same as F cm-2. Answer "Yes" or "No" only. Be very strict. Is "mg \cdot cm^{-2}" the unit in latex format which may display as plain text in the following text? he hybrid nanoarrays exhibited a high specific capacitance of 2033 F g−1 at the current density of 5 mA cm−2 along with a mass loading as high as 19.5 mg cm−1
chatgpt 数据标注
参考:
物理量标注
构建 prompt
标注背景 instruct
原始 instruct
For this task, you will be asked to annotate a sample of tweets about content moderation. Before describing the task, we explain what we mean by “content moderation”. “Content moderation” refers to the practice of screening and monitoring content posted by users on social media sites to determine if the content should be published or not, based on specific rules and guidelines. Every time someone posts something on a platform like Facebook or Twitter, that piece of content goes through a review process (“content moderation”) to ensure that it is not illegal, hateful or inappropriate and that it complies with the rules of the site. When that is not the case, that piece of content can be removed, flagged, labeled as or ‘disputed.’ Deciding what should be allowed on social media is not always easy. For example, many sites ban child pornography and terrorist content as it is illegal. However, things are less clear when it comes to content about the safety of vaccines or politics, for example. Even when people agree that some content should be blocked, they do not always agree about the best way to do so, how effective it is, and who should do it (the government or private companies, human moderators, or artificial intelligence).
使用 chatgpt 转换成
红外的 instruct 方法following given text is a background introduction instruct for annotate tweet using chatgpt, I want you to write a background introduction instruct for infrared text to annotate information about infared devices(eg: QWIP, HgCdTe, QDIP and other infrared detectors), infrared performance quantity and the performance test condition quantities. the introduction should be simple, clear and within 10 sentence. given text: For this task, you will be asked to annotate a sample of tweets about content moderation. Before describing the task, we explain what we mean by “content moderation”. “Content moderation” refers to the practice of screening and monitoring content posted by users on social media sites to determine if the content should be published or not, based on specific rules and guidelines. Every time someone posts something on a platform like Facebook or Twitter, that piece of content goes through a review process (“content moderation”) to ensure that it is not illegal, hateful or inappropriate and that it complies with the rules of the site. When that is not the case, that piece of content can be removed, flagged, labeled as or ‘disputed.’ Deciding what should be allowed on social media is not always easy. For example, many sites ban child pornography and terrorist content as it is illegal. However, things are less clear when it comes to content about the safety of vaccines or politics, for example. Even when people agree that some content should be blocked, they do not always agree about the best way to do so, how effective it is, and who should do it (the government or private companies, human moderators, or artificial intelligence).
转换成的 红外 instruct
For this task, you will be asked to annotate text with information about infrared devices and their performance characteristics. Before beginning the task, let us clarify the terms and context related to infrared technology. Infrared devices, such as QWIP (Quantum Well Infrared Photodetectors), HgCdTe (Mercury Cadmium Telluride) detectors, and QDIP (Quantum Dot Infrared Photodetectors), are used to detect and measure infrared radiation. Infrared radiation is a type of electromagnetic radiation that lies beyond the visible spectrum and has applications in fields like night vision, thermography, and remote sensing. Infrared device performance is often quantified using factors such as detectivity, response time, and spectral range. These performance metrics help determine the device's sensitivity, speed, and the range of wavelengths it can effectively detect. Performance test conditions are crucial to understanding how well an infrared device functions under specific environmental conditions. Factors such as temperature, humidity, and background radiation can influence device performance and are considered during testing. When annotating, please focus on identifying relevant information about infrared devices (e.g., QWIP, HgCdTe, QDIP), their performance characteristics (e.g., detectivity, responsivity, dark current), and the conditions under which their performance is tested.
标注任务 instruct
原始 instruct
In the context of content moderation, Section 230 is a law in the United States that protects websites and other online platforms from being held legally responsible for the content posted by their users. This means that if someone posts something illegal or harmful on a website, the website itself cannot be sued for allowing it to be posted. However, websites can still choose to moderate content and remove anything that violates their own policies. For each tweet in the sample, follow these instructions: 1. Carefully read the text of the tweet, paying close attention to details. 2. Classify the tweet as having a positive stance towards Section 230, a negative stance, or a neutral stance.
使用 ChatGPT 转换成
红外的 instructfollowing given text is a instruct for annotate tweet stance using chatgpt, I want you to write a instruct for infrared text to annotate infrared performance quantity. the introduction should be simple, clear. given text: In the context of content moderation, Section 230 is a law in the United States that protects websites and other online platforms from being held legally responsible for the content posted by their users. This means that if someone posts something illegal or harmful on a website, the website itself cannot be sued for allowing it to be posted. However, websites can still choose to moderate content and remove anything that violates their own policies. For each tweet in the sample, follow these instructions: 1. Carefully read the text of the tweet, paying close attention to details. 2. Classify the tweet as having a positive stance towards Section 230, a negative stance, or a neutral stance.
转换成功的 红外 instruct
For the task of annotating infrared performance quantity, follow these instructions: 1. Carefully read the text, focusing on details related to infrared devices and their performance. 2. Identify and classify the infrared performance quantity mentioned in the text, such as detectivity, responsivity, dark current.
有单位物理量
调用案例一 detectivity
For this task, you will be asked to annotate text with information about infrared devices and their performance characteristics. Before beginning the task, let us clarify the terms and context related to infrared technology. Infrared devices, such as QWIP (Quantum Well Infrared Photodetectors), HgCdTe (Mercury Cadmium Telluride) detectors, and QDIP (Quantum Dot Infrared Photodetectors), are used to detect and measure infrared radiation. Infrared radiation is a type of electromagnetic radiation that lies beyond the visible spectrum and has applications in fields like night vision, thermography, and remote sensing. Infrared device performance is often quantified using factors such as detectivity, responsivity, dark current. These performance metrics help determine the device's sensitivity, speed, and the range of wavelengths it can effectively detect. Performance test conditions are crucial to understanding how well an infrared device functions under specific environmental conditions. Factors such as operating temperature, cutoff/peak wavelength, bias (voltage), temperature can influence device performance and are considered during testing. When annotating, please focus on identifying relevant information about infrared devices (e.g., QWIP, HgCdTe, QDIP), their performance characteristics (e.g., detectivity, responsivity, dark current), and the conditions under which their performance is tested. For the task of annotating infrared performance quantity, follow these instructions: 1. Carefully read the text, focusing on details related to infrared devices and their performance. 2. Identify the infrared performance/(test condition) quantity , its value and unit mentioned in the text 3. list the result as a table: device, quantity, value, unit, is_performance 4. if no value found in the text, ignore the row. 5. Use only data present in the text. infrared text: The relative spectral response (Fig. ) was measured at 77 K under front illumination conditions through the ptHgCdTe layer.;The spectral response is broad with a cut-off wavelength of 11.8 jim.;A quantum efficiency equal of 44% (without an antireflection coating) as measured under a reduced field of view (FOV) to cut down the background photon flux density using a thermocouple detector as the reference.;Diode is near background limited (BLIP) at 77 K exhibiting a detectivity ofD*(1800FOV,300 K,1O.5 tm) = 21O'°cmHz1/W.;The C-V curves for these diodes were routinely measured, from which the carrier concentration distribution in the active layer can be calculated.;The depletion width at zero bias was typically 0.3-0.4 jim and the junction appears to be graded.;The carrier concentration at zero bias was about 1015/cm3 and usually has been equal to that obtained from the Hall data. The responsivity and noise were also measured with direct coupling to a low-noise preamplifier.;The values obtained lead to quantum efficiencies of around 50 percent, and detectivities of about 2 X 10" W-l * cm . Hz1/' at 77 K for a 180" field of view (FOV).;Because of the evolution of hybridization technology, it would seem reasonable to assume that diode resistances that are comparable with conventional resistances (RA = 5 52 * cm2 at 77 K) will be obtained in the near future.;This increase in resistance would permit obtaining detectivities higher than 5 X 10" W-' cm .;Hz'/'.;VII.;CONCLUSION High-performance multiplexing electronics (low noise, small pixel area) are essential for the fabrication of hybrid arrays of several thousand photovoltaic infrared detectors.;The tech-nology involved in hybridizing very large numbers of detectors onto silicon must also be mastered.;CCD's seem to be a very suitable way of assuring the electronic readout because of tl1ei.r low noise level and large dynamic range.;The best coupling technique seems to be by direct injection. The injection efficiency then being better than 95 percent, the coupling noise would become negligible compared to the transfer noise (3630 charges).;The number of detector noise charges for an injection efficiency of close to 1 becomes N~~ = 5690.;The signal-to-noise ratio would then be degraded by a factor of 1.20 and the equivalent detectivity would be 5 x 1010 w-' cm .;H Z~'~.
For this task, you will be asked to annotate text with information about infrared devices and their performance characteristics. Before beginning the task, let us clarify the terms and context related to infrared technology. Infrared devices, such as QWIP (Quantum Well Infrared Photodetectors), HgCdTe (Mercury Cadmium Telluride) detectors, and QDIP (Quantum Dot Infrared Photodetectors), are used to detect and measure infrared radiation. Infrared radiation is a type of electromagnetic radiation that lies beyond the visible spectrum and has applications in fields like night vision, thermography, and remote sensing. Infrared device performance is often quantified using factors such as detectivity, responsivity, dark current. These performance metrics help determine the device's sensitivity, speed, and the range of wavelengths it can effectively detect. Performance test conditions are crucial to understanding how well an infrared device functions under specific environmental conditions. Factors such as operating temperature, cutoff/peak wavelength, bias (voltage), temperature can influence device performance and are considered during testing. When annotating, please focus on identifying relevant information about infrared devices (e.g., QWIP, HgCdTe, QDIP), their performance characteristics (e.g., detectivity, responsivity, dark current), and the conditions under which their performance is tested. For the task of annotating infrared performance quantity, follow these instructions: 1. Carefully read the text, focusing on details related to infrared devices and their performance. 2. Identify the infrared performance/(test condition) quantity , its value and unit mentioned in the text 3. list the result as a table: device, quantity, value, unit, is_performance 4. if no value found in the text, ignore the row. 5. Use only data present in the text. given text: A number of 320x256 LWIR array with a wavelength longer than I0.0im has been successfully produced and operated.;The LWIR array was packaged in a dewar camera for testing.;An imaging picture taken by a LWIR array with a wavelength of l0.0tm at 77K is shown in Figure;. The facial features can be clearly identified.;The operability of this LWIR array is 97.1%.;Standard array testing has been conducted on the LWIR array using a Lumitron tester.;The distribution of array noise, responsivity, D*, and array uniformity have been measured at 77K and the results are shown in Figure;. With a 60° field of view cold shield and without anti-reflection coating, the median array D* is 9.4x10'°c m.;(Hz)"2.W'.;With an anti-reflection coating, the D* value can be improved by 40%.;HgCdTe Wafer 3 1629, with a wavelength of 14.7tm, was processed for producing 320x256 arrays using the PI3H process.;The diode I-V curve measured in dark and under thermal background on test diode with a size of 4x104 cm2 are shown respectively, in Figure ;(a) and;(b).;At 77K, the diode RoA is 2-3 Qcm2.;From lower temperature diode I-V curves, the diode RoAs at 53K and 48K are 20 cm2 and 1x104 cm2 respectively.;The 77K spectral response is shown in Figure .;During the hybridization of Array 3 1629-1, the weight for the indium bump bonding was reduced from our standard load in order to avoid damaging the diodes.;The setback was that some of the diodes near the edge were not properly connected.;Otherwise, the array functions very well.;Figure shows the histogram of uniformity of array dark current.;The narrow distribution on the left indicates the unconnected and the poorly connected diodes.;The major peak in the center of the diagram illustrates the distribution of the connected diodes at a bias of less than 10 mV.;Figure presents the quadruple output of leakage current signal after various integration times.;The blue curves portay the standard deviations of the signal.;Other than the poorly connected diodes at the edge of the array, the leakage current uniformity is quite good.;Even with the limitation of the charge capacitor for the 14.7im array, imaging picture of soldering iron can still be observed.;Currently, we are in the process of testing the array at temperatures lower than 77K.;A number of 128x128 arrays recently delivered to Lockheed Martin were fully characterized.;All of the arrays hybridized using the standard weight of 7kg have a minimum operability of 96% with a typical value of 97-98%.;In this section the characteristics oftwo arrays at the opposite LWIR wavelength spectrum are reported. Background limited infrared photodetector (BLIP) performance, attained at cryogenic temperatures, is the maximum performance achievable by a photoconductive detector.;By increasing the operating temperature, low cost detectors can be realised using thermoelectric caoling (>200 K).;Investigation of temperature dependent performance of Hgl,Cd,Te infrared detectors is essential for developing device structures and fabrication technologies capable of producing BLIP performance.;In this paper the performance of n-type x = 0.31 Hgl.;,Cd,Te photoconductors under reduced cooling is examined experimentally and theoretically.;Measurements gave a background limited DA' of 1.9 x loir cm HzlnW-' up to 170 K and values of 7.3 x 10'' and 6.4 x lo9 cm Hz'nW'' were measured at 200 K and 300 K, respectively. The dark current is given in figure .;The simulation shows the I -V characteristics at 70 K, 78 K and 100 K. The bandgap of Hg 1-x Cd x Te increases with temperature, and we can notice that effect of tunneling is far more prominent at lower temperatures.;At lower voltages (near zero), Auger generation is the primary cause of all the leakage current, this however changes with the application of higher voltages where tunneling becomes dominant.;We have also added the effect of ionized dopants, which would ideally lead to carrier freezeout at lower temperatures, but as the donor levels tend to lie deep inside the conduction/valence band, complete ionization is observed even at 77 K. We notice from the above graph the high resistance at low temperatures due to very low dark currents, but at 100 K we notice that the peak dynamic resistance drops to around 10 9 Ω from 10 11 Ω at 70 K. The noise levels in the device continue to increase as with the increase of temperature and voltage.;The increase in temperature leads to higher Auger generation; there are also noticeable contributions of shot noise and Johnson noise.;Figure shows the Detectivity (jones) at 77K and 100K.;We notice that the Detectivity is an order of magnitude higher at 78K.;As the temperature increases the components contributing to noise like Auger generation deteriorate the detectors performance by increasing the leakage current and the detector ceases to provide background limited performance.;Thus it is imperative to operate HgCdTe photodetectors at low temperatures.
使用 ChatIE 方法抽取
SPIRES 定义 schema 通用关系抽取
一起抽取测量值和测量条件
prompt:
Summarize the value of the [detectivity] in the following text in a
form of an array of json object and the keys consisting of:
infrared_device, value, unit, condition, eg: [{"infrared_device":
"HgCdTe", "value": "12", "unit": "cmHz^(1/2)/W", "condition":
[{"quantity_name": "dark current", "value": "1.3", "unit": "mA"}]}],
the quantiy_name in condition can be operating temperature, cutoff
wavelength, bias voltage, etc.
example:
Use only data present in the text. If data is not present in the
text, type "None". The infrared device is a kind of infrared detector,
eg: HgCdTe, Hg1-xCdxTe, pixel (picture element), photodiode, image
sensor, quantum well infrared photodetector (QWIP), photomultiplier,
bolometer, infrared detector, thermocouple, focal plane array,
microbolometer, infrared focal plane array, thermopile, photon
detector, quantum dot infrared photodetector (QDIP), pyroelectric
detector, thermal detector, PIN photodiode, Golay cell (detector),
CMOS image sensor, infrared focal plane, uncooled infrared focal plane
array, responsive element, photovoltaic IR detector, photoconductive
IR detector, microbolometer infrared focal plane array, superlattice
IR detector, cooled infrared focal plane array. When discussing
infrared devices, it is common to refer to them as device A and device
B, such as "nBn and complementary barrier HgCdTe detectors," which
actually refers to two types of infrared devices : ["nBn" ,
"complementary barrier HgCdTe."]. Summarize the value of the
[detectivity] in the following text in a form of an array of json
object and the keys consisting of: infrared_device, value, unit,
condition, eg: [{"infrared_device": "HgCdTe", "value": "12", "unit":
"cmHz^(1/2)/W", "condition": [{"quantity_name": "dark current",
"value": "1.3", "unit": "mA"}]}], the quantiy_name in condition can be
operating temperature, cutoff wavelength, bias voltage, etc.
{infrared_text}
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上次更新 2025-09-24 (360d44c)