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Recent advances on organic-inorganic hybrid perovskite photodetectors with fast response

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InfoMat 2019年第2期1卷 164-182页

作者： Yan Zhao Chenglong Li Liang Shen State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchunChina

In the last decade,optoelectronic devices based on organic-inorganic hybrid perovskite(OIHP)materials,which have unique advantages of direct bandgap,large absorption coefficient,low density of defects,long charge carrier lifetime,diffusion length,and solution processability,have traveled with traditional inorganic semiconductor *** state-of-the-art OIHP photodetectors have contributed a comparable performance with Si and III-V compound semiconductor based *** amount of efforts have been focused on improving sensitivity,broadening detection spectra,enlarging linear dynamic ***,few reports emphasized the important parameter of response *** this review,we summarize the progress and applications of OIHP photodetectors with fast *** on photovoltaic and photoconductive-type OIHP photodetectors,the working principle and key factors on determining response speed are systematically ***,the research progress of response speed,which is composed of resistance-capacitance(RC)time constant and charge carrier transit time is discussed in ***,considering the intrinsic flexibility of perovskite materials,we briefly discuss the flexible ***,an outlook and potential rules for designing fast-response OIHP photodetectors are further proposed.

关键词： organic-inorganic hybrid perovskite photodetectors fast response photoconductive photovoltaic

Wide-spectrum polarization-sensitive and fast-response photodetector based on 2D group Ⅳ-Ⅵ semiconductor tin selenide

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Fundamental Research 2022年第6期2卷 985-992页

作者： Yali Yu Tao Xiong Zhengfeng Guo Shijun Hou Juehan Yang Yue-Yang Liu Honggang Gu Zhongming Wei State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronic Engineering University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074China

Tin selenide(SnSe)has attracted considerable interest recently on account of its low-symmetry lattice structure,great compatibility with key semiconductor technology,and remarkable electrical and optical ***-based polarization-sensitive photodetectors show promising application prospects because of their fast response and excellent photoelectric ***,an in-plane anisotropic SnSe nanosheet was synthesized and reported in detail by applying angle-resolved polarized Raman spectroscopy(ARPRS),polarization-resolved optical microscopy(PROM),angle-resolved optical absorption spectroscopy(AROAS),and other crystal structure characterization ***,SnSe crystals exhibit superior polarization detection performance with a high anisotropic photocurrent ratio(2.31 at 1064 nm)due to the structure formed by the Van der Waals superposition of covalently bonded atomic ***,SnSe-based photodetectors have high responsivity(9.27 A/W),high detectivity(4.08×10^(10)Jones),and fast response(in the order of nanoseconds).These results suggest a new method for fabricating 2D fast-response polarization-sensitive photodetectors in the future.

关键词： Layered SnSe In-plane anisotropy Polarization-sensitive photodetector fast response Wide spectrum

A fixed-frequency fast transient response DC–DC controller for VRMs

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Journal of Semiconductors 2013年第12期34卷 66-71页

作者：陈明阳赵梦恋吴晓波 Institute of VLSI Design Zhejiang University

A 2V-10A fast transient response DC-DC buck controller based on fixed frequency hysteresis control is presented. A carefully designed output voltage filter detects the output capacitor current change which helps the controller to respond immediately after load changes. Adaptive hysteresis control guarantees the switching frequency to be the same as the reference frequency by using a CCII-composed circuit and current mirrors. The controller is designed and fabricated in a TSMC 0.35 μm process. Simulation and test results show that this con- troller achieves a 20 μs settling time in one single switching cycle when load current changes from 1 A to the full load condition at 10 A.

关键词： fast response hysteretic control buck

Moisture‑Electric–Moisture‑Sensitive Heterostructure Triggered Proton Hopping for Quality‑Enhancing Moist‑Electric Generator

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Nano-Micro Letters 2024年第3期16卷 351-366页

作者： Ya’nan Yang Jiaqi Wang Zhe Wang Changxiang Shao Yuyang Han Ying Wang Xiaoting Liu Xiaotong Sun Liru Wang Yuanyuan Li Qiang Guo Wenpeng Wu Nan Chen Liangti Qu Key Laboratory of Cluster Science Ministry of Education of ChinaKey Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081People’s Republic of China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019People’s Republic of China Department of Chemistry Key Laboratory of Organic Optoelectronics&Molecular EngineeringMinistry of EducationTsinghua UniversityBeijing 100084People’s Republic of China

Moisture-enabled electricity(ME)is a method of converting the potential energy of water in the external environment into electrical energy through the interaction of functional materials with water molecules and can be directly applied to energy harvesting and signal ***,ME can be unreliable in numerous applications due to its sluggish response to moisture,thus sacrificing the value of fast energy harvesting and highly accurate information ***,by constructing a moisture-electric-moisture-sensitive(ME-MS)heterostructure,we develop an efficient ME generator with ultra-fast electric response to moisture achieved by triggering Grotthuss protons hopping in the sensitized ZnO,which modulates the heterostructure built-in interfacial potential,enables quick response(0.435 s),an unprecedented ultra-fast response rate of 972.4 mV s^(−1),and a durable electrical signal output for 8 h without any *** research provides an efficient way to generate electricity and important insight for a deeper understanding of the mechanisms of moisture-generated carrier migration in ME generator,which has a more comprehensive working scene and can serve as a typical model for human health monitoring and smart medical electronics design.

关键词： Moist-electric generators Grotthuss proton hopping fast response Durable electrical output Personal health monitoring

Rapid operando gas monitor for commercial lithium ion batteries: Gas evolution and relation with electrode materials

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Journal of Energy Chemistry 2022年第9期31卷 14-25,I0002页

作者： Siqi Lyu Na Li Lei Sun Shuqiang Jiao Haosen Chen Wei-Li Song Institute of Advanced Structure Technology.Bejing Institute of Technology.Bejing 100081 China School ofifomation and Eletronics Beijing nstute of Technology.Bejing 100081China StateKey Laboratory of Advanced Metalurgy University of Science and Technology Bejing Bejing 100083China

Internal gases caused by side reactions are crucial signals for evaluating health and safety states of Li-ion batteries(LIBs)while it is still a great challenge to timely realize accurate *** address the issues of implanting various gas sensors into commercial batteries,here a novel method is developed to fast operando monitoring gas evolution via equipping non-dispersive infrared multi-gases sensors into a sealed tank,where real commercial batteries with one open end could be settled for *** generated CO_(2)concentration is strongly linked with both voltage and temperature,while the concentrations of CH_(4) and C_(2)H_(4) are solely dependent on *** a typical trace gas,evolution behaviors of CO_(2)have been related to 0_(2) generation from LiNi_(o.5)Mn_(0.3)CoO_(2)0_(2) positive electrode,implying stable CO_(2)release below a critical voltage of 4.5 *** tracking CO_(2)concentration,an increased amount of Li_(2)CO_(3) was monitored on the surface of graphite negative electrode during discharge process at dfferent temperatures and cutoff voltages,which contributes to the component variation of solid electrolyte *** operando techniques promise a plaform for well understanding the interaction of side reactions linked with gas evolution between positive and negative electrodes in commercial LIBs.

关键词： Operando monitoring CO_(2)evolution fast response Li-ion batteries

Pulse electrochemical synaptic transistor for supersensitive and ultrafast biosensors

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InfoMat 2023年第11期5卷 25-39页

作者： Jianlong Ji Zhenxing Wang Fan Zhang Bin Wang Yan Niu Xiaoning Jiang Zeng-ying Qiao Tian-ling Ren Wendong Zhang Shengbo Sang Zhengdong Cheng Qijun Sun College of Electronics Information and Optical Engineering Taiyuan University of TechnologyTaiyuanthe People’s Republic of China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijingthe People’s Republic of China Department of Mechanical and Aerospace Engineering North Carolina State UniversityRaleighNorth CarolinaUSA D Artificial Intelligence Biomedical Research Institute Taiyuanthe People’s Republic of China CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology(NCNST)Beijingthe People’s Republic of China Institute of Microelectronics Tsinghua UniversityBeijingthe People’s Republic of China College of Chemical and Biological Engineering Zhejiang UniversityHangzhouthe People’s Republic of China

High sensitivity and fast response are the figures of merit for benchmarking commercial *** to the advantages of intrinsic signal amplification,bionic ability,and mechanical flexibility,electrochemical transistors(ECTs)have recently gained increasing popularity in constructing various *** the current work,we have proposed a pulse-driven synaptic ECT for supersensitive and ultrafast *** pulsing the presynaptic input(drain bias,VD)and setting the modulation potential(gate bias)near transconductance intersection(VG,i),the synaptic ECT-based pH sensor can achieve a record high sensitivity up to 124 mV pH^(-1)(almost twice the Nernstian limit,59.2 mV pH^(-1))and an ultrafast response time as low as 8.75 ms(7169 times faster than the potentiostatic sensors,62.73 s).The proposed synaptic sensing strategy can effectively eliminate the transconductance fluctuation issue during the calibration process of the pH sensor and significantly reduce power ***,the most sensitive working point at VG,i has been elaborately figured out through a series of detailed mathematical derivations,which is of great significance to provide higher sensitivity with quasi-nonfluctuating amplification *** proposed electrochemical synaptic transistor paired with an optimized operating gate offers a new paradigm for standardizing and commercializing high-performance biosensors.

关键词： fast response pH sensor pulse electrochemical transistor supersensitive synaptic transistor

AC Line Filter Electrochemical Capacitors:Materials,Morphology,and Configuration

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Energy & Environmental Materials 2022年第4期5卷 1060-1083页

作者： Haichao Tang Yang Tian Zhongshuai Wu Yujia Zeng Yang Wang Yang Hou Zhizhen Ye Jianguo Lu State Key Laboratory of Silicon Materials Key Laboratory for Biomedical Engineering of Ministry of EducationSchool of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences457 Zhongshan RoadDalian 116023China Dalian National Laboratory for Clean Energy Chinese Academy of Sciences457 Zhongshan RoadDalian 116023China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials Institute of WenzhouZhejiang UniversityWenzhou 325036China

Recently,more and more supercapacitors(SCs)have been developed as AC line filter capacitors,which are generally named AC line filter electrochemical capacitors(FECs).Compared to traditional bulky aluminum electrolytic capacitors(AECs),FECs have higher capacity and lower space occupancy,which makes them a strong ***,different from the common SCs for energy storage,it is necessary to consider the frequency response of the SCs for AC line filtering,where the contradiction between frequency response and specific capacitance is a *** researchers have proposed different solutions from the perspective of materials,morphology,and configuration for this *** on the above background,in this review,we briefly introduce the principle and parameters of AC line filter electrochemical *** systematically summarize the state-of-the-art progresses of FECs and discuss their possible application and development in the *** development of FECs can greatly promote the planarization,integration,and miniaturization of filter capacitors,and provide a new solution for the utilization of green and unstable energy.

关键词： AC line filtering fast response filter electrochemical capacitors specific capacitance supercapacitors

Ultra-broadband,fast,and polarization-sensitive photoresponse of low-symmetry 2D NdSb_(2)

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Nano Research 2022年第6期15卷 5469-5475页

作者： Gang Li Hanlin Zhang Yong Li Shiqi Yin Xucai Kan Wensen Wei Haifeng Du Binghui Ge Chao An Mingliang Tian Feng Yan Sanjun Yang Tianyou Zhai Liang Li Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China Engineering Technology Research Center of Magnetic Materials School of Physics and Materials ScienceAnhui UniversityHefei 230601China Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field Laboratory of the Chinese Academy of ScienceHefei 230031China Department of Applied Physics The Hong Kong Polytechnic UniversityKowloonHong Kong 999077China State Key Laboratory of Materials Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074China

Broadband photodetectors with polarization-sensitive ability have received extraordinary attention for modern optoelectronic *** photodetectors should possess high responsivity,fast response,and good stability,which are rare to meet at the same time in one low-symmetric two-dimentional(2D)*** this work,neodymium diantimonides(RSb_(2)),a member of light rare-earth diantimonides RSb_(2)(R=La–Nd,Sm)with low-symmetry structure,is introduced as a fascinating highly anisotropic 2D material for broadband detection(532 nm to 4μm).The photodetector exhibits a responsivity of 0.49 mA·W^(−1)with 15μs response time at 532 nm and highly stable performance under ambient conditions over 8 ***,we identify the polarization-sensitive photoresponse of the detector and demonstrate a high anisotropic factor~*** addition,strong inplane anisotropy is revealed by anisotropic phonon response and the photodetection mechanism is investigated by scanning photocurrent microscopy *** pioneer work on RSb_(2)paves the way for further exploration of 2D RSb_(2)for high performance polarized photodetectors with fast photothermoelectric response.

关键词： ultra-broadband fast response polarization-sensitive photodetector RSb_(2)

Design and implementation of a 3-A source and sink linear regulator for bus terminators

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Journal of Semiconductors 2012年第10期33卷 122-128页

作者：李演明毛翔宇文常保温立民 School of Electronic and Control Engineering Chang'an University Institute of Electronic CAD Xidian University

According to the requirements of the bus terminal regulator,a linear regulator with 3-A source-sink current ability is *** use of the NMOS pass transistor and load current feedback technique enhances the system current ability and response *** method of adaptive zero compensation realizes loop stability over the whole load range for either source or sink ***,the transconductance matching technique reduces the shoot-through current through the output stage to less than 3μ*** regulator has been fabricated with a 0.6-μm 30 V BCD process successfully,and the area size is about 1 mm;.With a 20μF output capacitor, the maximum transient output-voltage variation is within 3.5%of the output voltage with load step changes of±2 A/lμ*** the load range of±3 A,the variation of output voltage is less than±15 mV.

关键词： bus termination regulator linear regulator fast response power management IC