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Organic Passivation of Deep Defects in Cu(In,Ga)Se_(2) Film for Geometry-Simplified Compound Solar Cells

Research 2023年第4期2023卷 425-435页

作者： Jingwei Chen Xuan Chang Jianxin Guo Qing Gao Xuning Zhang Chenxu Liu Xueliang Yang Xin Zhou Bingbing Chen Feng Li Jianming Wang Xiaobing Yan Dengyuan Song Han Li Benjamin S.Flavel Shufang Wang Jianhui Chen Advanced Passivation Technology Lab College of Physics Science and TechnologyHebei UniversityBaoding071002China State Key Laboratory of Photovoltaic Materials&Technology Yingli Green Energy Holding Co.Ltd.Baoding 071051China Das Solar Co. Ltd.No 43 Bailing South RoadQuzhou Green Industry Clustering ZoneQuzhouZhejiang Province324022China Institute of Nanotechnology Karlsruhe Institute of TechnologyHermann-von-Helmholtz-Platz 1EggensteinLeopoldshafen76344Germany.

Diverse defects in copper indium gallium diselenide solar cells cause nonradiative recombination losses and impair device ***,an organic passivation scheme for surface and grain boundary defects is reported,which employs an organic passivation agent to infiltrate the copper indium gallium diselenide thin films.A transparent conductive passivating(TCP)film is then developed by incorporating metal nanowires into the organic polymer and used in solar *** TCP films have a transmittance of more than 90%in the visible and nearinfrared spectra and a sheet resistance of~10.5Ω/*** leads to improvements in the open-circuit voltage and the efficiency of the organic passivated solar cells compared with control cells and paves the way for novel approaches to copper indium gallium diselenide defect passivation and possibly other compound solar cells.

关键词： copper visible Defects

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Micro composite vacuum gauge for space applications

Micro composite vacuum gauge for space applications

引用

International Conference on vacuum Electronics

作者： Gang Li Xiaodong Han Zhengyi Ren Yongjun Cheng Detian Li Science and Technology on Vacuum Technology and Physics Laboratory Lanzhou Institute of Physics Lanzhou China School of Aerospace Engineering Xiamen University Xiamen China

A configuration of micro vacuum gauge combined the benefits of capacitive gauge (CDG) and Pirani gauge was proposed for space exploration. The reading of the CDG is independent of gas composition to be measured, which can be used as a calibration standard. The Pirani gauge, with strong discrimination against different gases, is adopted as a gas composition analyzer in this configuration. With this design, the partial pressure of certain gas components can be analyzed qualitatively or even quantitatively. Considering its small size, weight and power consumption, it has significant advantages in space applications.

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Towards mixed physical node reservoir computing:light-emitting synaptic reservoir system with dual photoelectric output

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Light(science & Applications) 2024年第9期13卷 1865-1877页

作者： Minrui Lian Changsong Gao Zhenyuan Lin Liuting Shan Cong Chen Yi Zou Enping Cheng Changfei Liu Tailiang Guo Wei Chen Huipeng Chen Institute of Optoelectronic Display National&Local United Engineering Lab of Flat Panel Display TechnologyFuzhou UniversityFuzhou 350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350100China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou 350207China Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore Department of Physics National University of Singapore3 Science Drive 3Singapore 117543Singapore

Memristor-based physical reservoir computing holds significant potential for efficiently processing complex spatiotemporal data,which is crucial for advancing artificial ***,owing to the single physical node mapping characteristic of traditional memristor reservoir computing,it inevitably induces high repeatability of eigenvalues to a certain extent and significantly limits the efficiency and performance of memristor-based reservoir computing for complex ***,this work firstly reports an artificial light-emitting synaptic(LES)device with dual photoelectric output for reservoir computing,and a reservoir system with mixed physical nodes is *** system effectively transforms the input signal into two eigenvalue outputs using a mixed physical node reservoir comprising distinct physical quantities,namely optical output with nonlinear optical effects and electrical output with memory *** previously reported memristor-based reservoir systems,which pursue rich reservoir states in one physical dimension,our mixed physical node reservoir system can obtain reservoir states in two physical dimensions with one input without increasing the number and types of *** recognition rate of the artificial light-emitting synaptic reservoir system can achieve 97.22%in MNIST ***,the recognition task of multichannel images can be realized through the nonlinear mapping of the photoelectric dual reservoir,resulting in a recognition accuracy of 99.25%.The mixed physical node reservoir computing proposed in this work is promising for implementing the development of photoelectric mixed neural networks and material-algorithm collaborative design.

关键词： reservoir mixed system

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Wide-temperature range and high safety electrolytes for highvoltage Li-metal batteries

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Nano Research 2023年第6期16卷 8260-8268页

作者： Anran Pan Zhicheng Wang Fengrui Zhang Lei Wang Jingjing Xu Jieyun Zheng Jianchen Hu Chenglong Zhao Xiaodong Wu i-lab Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123China Nano Science and Technology Institute University of Science and Technology of ChinaHefei 230026China Institute of Physics Chinese Academy of SciencesBeijing 100190China College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123China Phylion battery Co. Ltd.Suzhou 215123China

Along with the keeping growing demand for high-energy-density energy storage system,high-voltage Li-metal batteries(LMBs)have attracted many *** view of many defects of the commercial electrolytes,such as flammability,limited operation temperature range,and severe Li dendrite growth,non-flammable phosphate-based localized highly concentrated electrolytes(LHCE)have been explored as one of the safe electrolytes for *** until now there is rare report on wide-temperature range LMBs using phosphate-based ***,we prepare a wide-temperature LHCE,which is composed of lithium difluoro(oxalato)borate(LiDFOB),triethyl phosphate(TEP),and 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether(HFE),and explore the applicability in wide-temperature LMBs from−40 to 70℃.In the LHCE,both TEP and HFE are non-flammable,and Li^(+) is highly coordinated with TEP and DFOB^(−),which can effectively inhibit the TEP decomposition on anode,and facilitate the preferential reduction of DFOB^(−),thus obtain a robust solid electrolyte interphase(SEI)to suppress Li dendrite growth and side ***,this LHCE can not only endow Li/Cu and Li/Li cells with high Coulombic efficiency(CE)and long cycling lifespan,but also be applied to LiFePO_(4)(LFP)/Li and LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM523)/Li *** importantly,the NCM523/Li LMBs with LHCE can deliver stable cycling performance at 4.5 V high-voltage and high-temperature(70℃),as well as excellent low-temperature capacity retention even though both charging and discharging process were carried out at−40℃.

关键词： safe electrolytes wide-temperature non-flammable high-voltage batteries

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pH modulation and molecular layer construction for stable zinc batteries

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Journal of Energy Chemistry 2025年第3期102卷 179-188页

作者： Donghong Wang Qiwang Shao Xianjia Cao Mengxuan Qin Yizhu He Lei Zhu Qing Li Dongming Liu School of Materials Science and Engineering Anhui Province Key Laboratory of Efficient Conversion and Solid-State Storage of Hydrogen&ElectricityAnhui University of TechnologyMa'anshan 243032AnhuiChina Anhui Key Lab of Metal Material and Processing Ma'anshan 243002AnhuiChina School of Chemistry and Chemical Engineering Anhui University of TechnologyMa'anshan 243032AnhuiChina Institute of Applied Physics and Materials Engineering University of MacaoMacao 99078China

Aqueous zinc-ion batteries(AZIBs)have regained interest due to their inherent safety and ***,the zinc anode is notorious for side reactions and dendrite growth,which plague the practical application of *** the interfacial pH to reduce the by-products has been proven to be effective in protecting the zinc ***,the dynamic regulation of the inherently unstable zinc interface during prolonged cycling remains a significant ***,zwitterionic N-tris(hydroxymethyl)methylglycine(TMG)integrated with negative-COO^(-)and positive NH_(2)^(+)groups is proposed to stabilize the Zn anode and extend the lifespan as a self-regulating interfacial *** anionic portion serves as a trapping site to balance the interfacial pH and thus mitigate the unintended side ***,the NH_(2)^(+)cations are anchored on the zinc surface,forming a water-shielding,zincophilic molecular layer that guides three-dimensional diffusion and promotes uniform ***,an average plating efficiency of 99.74%over 3300 cycles at a current density of2 mA cm^(-2)is ***,the TMG additive actualizes ultralong life in Zn‖Zn symmetrical cells(5500 h,exceeding 229 days,1 mA cm^(-2)/1 mA h cm^(-2)),and enables the Zn‖I_(2)cells to reach capacity retention rate of 89.4%after 1000 cycles at 1 A g^(-1).

关键词： Aqueous zinc ion battery Zn dendrites pHDynamic regulation Molecular layer Zn-12

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Semiconducting M_(2)X(M=Cu,Ag,Au;X=S,Se,Te)monolayers:A broad range of band gaps and high carrier mobilities

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Nano Research 2021年第8期14卷 2826-2830页

作者： Lei Gao Yan-Fang Zhang Shixuan Du Institute of Physics&University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100190China Faculty of Science Kunming University of Science and TechnologyKunming 650000China CAS Key Laboratory of Vacuum Physics Beijing 100049China

Two-dimensional semiconductors(2DSCs)with appropriate band gaps and high mobilities are highly desired for future-generation electronic and optoelectronic ***,using first-principles calculations,we report a novel class of 2DSCs,group-11-chalcogenide monolayers(M_(2)X,M=Cu,Ag,Au;X=S,Se,Te),featuring with a broad range of energy band gaps and high carrier *** energy band gaps extend from 0.49 to 3.76 eV at a hybrid density functional level,covering from ultraviolet-A,visible light to near-infrared region,which are crucial for broadband ***,the calculated room-temperature carrier mobilities of the M_(2)X monolayers are as high as thousands of cm^(2)·V^(-1)·s^(-1).Particularly,the carrier mobilities ofε-Au_(2)Se and e-Au2Te are up to 104 cm^(2)·V^(-1)·s^(-1),which is very attracitive for electronic *** from the broad range of energy band gaps and superior carrier mobilities,the group-11-chalcogenide M_(2)X monolayers are promising candidates for future-generation nanoelectronics and optoelectronics.

关键词： two-dimensional semiconductors group-11-chalcogenides electronic properties first-principles calculations

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Comprehensive Analysis of Solar Cell Efficiency: A Comparative Study of TOPCon and PERC Photovoltaic Modules under Different Light Intensity Conditions 52

Comprehensive Analysis of Solar Cell Efficiency: A Comparati...

引用

52nd IEEE Photovoltaic Specialist Conference, PVSC 2024

作者： Lv, Baojie Chen, Zewen Yang, Yuehua Yang, Qian Chen, Yifeng Huang, Xin Yang, Hong School of Physics Xi'an Jiaotong University Xi'an710049 China School of Automation and Information Engineering Xi'an University of Technology Xi'an710054 China State Key Lab of Pv Science and Technology Trina Solar Changzhou213031 China

ISBN: (纸本)9781665464260

This paper investigates the specific efficiencies of TOPCon modules and PERC modules under varying light intensities and temperatures, employing a combination of experimental and theoretical approaches. The experimental results unequivocally demonstrate that the specific efficiency of TOPCon modules surpasses that of PERC modules. To clarify this observed phenomenon, the paper provides explanations from two perspectives. From a macroscopic viewpoint, we calculated the series and parallel resistances of both modules. Additionally, we calculated the values of dη/dRs and dη/dRSh for each module. A comparative analysis reveals that the TOPCon module, characterized by larger RSh and smaller Rs, exhibits superior performance. At the micro level, the more pronounced compounding action in the PERC module contributes to a degradation in its performance, resulting in lower efficiency. In conclusion, the impact of both resistance and compounding becomes more evident with increasing light intensity. © 2024 IEEE.

关键词： Photovoltaics

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Floquet Chern vector topological insulators in three dimensions

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Physical Review B 2025年第13期111卷 134301-134301页

作者： Fangyuan Ma Junrong Feng Feng Li Ying Wu Di Zhou Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement (MOE) School of Physics Beijing Institute of Technology Beijing 100081 China School of Physics Nanjing University of Science and Technology Nanjing 210094 China

We theoretically and numerically investigate Chern vector insulators and topological surface states in a three-dimensional lattice, based on phase-delayed temporally periodic interactions within the tight-binding model. These Floquet interactions break time-reversal symmetry, effectively inducing a gauge field analogous to magnetic flux. This gauge field results in Chern numbers in all spatial dimensions, collectively forming the Chern vector. This vector characterizes the topological phases and signifies the emergence of robust surface states. Numerically, we observe these states propagating unidirectionally without backscattering on all open surfaces of the three-dimensional system. Our paper paves the way for breaking time-reversal symmetry and realizing three-dimensional Chern vector topological insulators using temporally periodic Floquet techniques.

关键词： Topological insulators

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Probing fragile topology with dislocations

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science Bulletin 2024年第23期69卷 3657-3660页

作者： Ying Wu Zhi-Kang Lin Yating Yang Zhida Song Feng Li Jian-Hua Jiang School of Physics Nanjing University of Science and TechnologyNanjing 210094China School of Physical Science and Technology and Collaborative Innovation Center of Suzhou Nano Science and TechnologySoochow UniversitySuzhou 215006China College of Mathematics and Physics Beijing University of Chemical TechnologyBeijing 100029China International Center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Hefei National Laboratory Hefei 230088China Collaborative Innovation Center of Quantum Matter Beijing 100871China Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement(MOE) School of PhysicsBeijing Institute of TechnologyBeijing 100081China Suzhou Institute for Advanced Research University of Science and Technology of ChinaSuzhou 215123China

Recently,fragile topology[1–11]and its important role in the properties of twisted bilayer graphene[8],non-Abelian topology[9],flat bands[10]and related emergent phases have attracted much attention,and led to discoveries that connect band topology with correlated electron states[11,12]such as superconductivity[12].Interestingly,the band topology can impose constraints on the superconducting order parameters as revealed by recent studies[12].Fragile topological phases are characterized by nontrivial signatures in either the Wilson loops[3,6]or the band representations[2,3,13]but can be connected with some obstructed atomic insulator phases,which are trivial insulators with charge centers away from atoms,via adding some trivial bands[2].It has been shown that fragile topological insulators do not have robust edge states,imposing challenges on their experimental ***,it was proposed that local gauge flux insertion[4]or twisted boundary conditions[14,15]can be a useful tool to probe the fragile ***,neither local gauge flux insertion nor the twisted boundary condition is feasible in genuine condensed matter experimental conditions.

关键词： topology twisted trivial

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Measurements of Dipole Moments for the 5s5p^(3)P_(1)–5sns^(3)S_(1)Transitions via Autler–Townes Spectroscopy

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Chinese physics Letters 2022年第9期39卷 17-22页

作者： Canzhu Tan Fachao Hu Zhijing Niu Yuhai Jiang Matthias Weidemüller Bing Zhu Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China CAS Center For Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Center for Transformative Science and School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Physikalisches Institut Universität HeidelbergIm Neuenheimer Feld 22669120 HeidelbergGermany HSBC Lab-China Guangzhou 510620China

We report on experimental measurements of the transition dipole moments(TDMs)between the intermediate state 5s5p^(3)P_(1)and the triplet Rydberg series 5sns^(3)S_(1)in an ultracold strontium *** n is the principal quantum number ranging from 19 to *** transition 5s5p^(3)P_(1)–5sns^(3)S_(1)is coupled via an ultraviolet(UV)beam,inducing Autler–Townes splitting of both *** a splitting of the intermediate state is spectroscopically measured by using absorption imaging on a narrow transition 5s^(21)S_(0)–5s5p^(3)P_(1)in an ultracold gas of strontium *** power and size of the UV beam are carefully determined,with which the TDMs are extracted from the measured Autler–Townes *** experimentally obtained TDMs are compared to the calculations based on a parametric core potential,on a Coulomb potential with quantum defect,and on the open-source library Alkali Ryderg calculator,finding good agreement with the former two models and significant deviation with the latter.

关键词： quantum splitting Transition

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