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Instability of solution-processed perovskite films:origin and mitigation strategies

Materials Futures 2023年第1期2卷 26-59页

作者： Shuo Wang Ming-Hua Li Yan Jiang Jin-Song Hu Beijing National Laboratory for Molecular Sciences(BNLMS) Institute of ChemistryChinese Academy of SciencesBeijing 100190People’s Republic of China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China University of Chinese Academy of Sciences Beijing 100049People’s Republic of China

perovskite solar cells(PSCs)are promising next-generation photovoltaics due to their unique optoelectronic properties and rapid rise in power conversion ***,the instability of perovskite materials and devices is a serious obstacle hindering technology *** quality of perovskite films,which is an important prerequisite for long-term stable PSCs,is determined by the quality of the precursor solution and the post-deposition treatment performed after perovskite ***,we review the origin of instability of solution-processed PSCs from the perspectives of the precursor solutions and the perovskite *** addition,we summarize the recent strategies for improving the stability of the perovskite ***,we pinpoint possible approaches to further advance their long-term stability.

关键词： stability perovskite solar cells precursor solution perovskite films degradation

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High-performance large-area perovskite photovoltaic modules

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Nano Research Energy 2022年第2期1卷 182-193页

作者： Liang Chu Shuaibo Zhai Waqar Ahmad Jing Zhang Yue Zang Wensheng Yan Yongfang Li Institute of Carbon Neutrality and New Energy&School of Electronics and Information Hangzhou Dianzi UniversityHangzhou 310018China School of Electronic and Optic Engineering Nanjing University of Posts and TelecommunicationsNanjing 210023China Department of Physics Faculty of SciencesUniversity of SialkotPunjab 51310Pakistan School of Materials Science&Engineering Jiangsu Collaborative Innovation Center of Photovoltaic Science&EngineeringChangzhou UniversityChangzhou 213164China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

perovskite solar cells(Pero-SCs)exhibited a bright future for the next generation of photovoltaic technology because of their high power conversion efficiency(PCE),low cost,and simple solution *** certified laboratory-scale PCE has reached 25.7%referred to small scale(perovskite ***,there is a dire need to produce high-quality perovskite films for large-area photovoltaic ***,we summarize the recent advances in perovskite photovoltaic modules(PPMs)with particular attention paid to the coating methods,as well as the growth regulation of the high-quality and large-area perovskite ***,this study encompasses future development directions and prospects for PPMs.

关键词： perovskite solar cells perovskite films large area perovskite photovoltaic modules

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Resistive switching and artificial synaptic performances of memristor based on low-dimensional bismuth halide perovskites

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Nano Research 2023年第7期16卷 10108-10119页

作者： Feifei Luo Yanzhao Wu Junwei Tong Fubo Tian Xianmin Zhang Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang 110819China Department of Physics Freie Universität Berlin14195 BerlinGermany State Key Laboratory of Superhard Materials College of PhysicsJilin UniversityChangchun 130012China

Zero-dimensional(0D)-Cs_(3)Bi_(2)I_(9),two-dimensional(2D)-Cs_(3)Bi_(2)Br_(9),and one-dimensional(1D)-Cs3Bi2Cl9 perovskite films have been successfully grown on indium tin oxide(ITO)glass substrates,which were used to fabricate memristors with the structure of Al/Cs_(3)Bi_(2)X_(9)(X=I,Br,and Cl)/ITO *** current three types of memristors exhibited bipolar resistive switching *** the endurance and retention time tests clearly demonstrated the excellent stability of present ***,the ON/OFF ratio of the 0D-Cs_(3)Bi_(2)I_(9)device is close to 104 at the reading voltage of 0.1 V,which is nearly 100 and 1000 times larger than those of the 1D-Cs3Bi2Cl9 device and the 2D-Cs_(3)Bi_(2)Br_(9)device,*** activation energy of halide vacancies in the Cs_(3)Bi_(2)X_(9)(X=I,Br,and Cl)films was calculated using the density functional theory by considering a minimum migration path,demonstrating the dimensionality of the Cs_(3)Bi_(2)X_(9)(X=I,Br,and Cl)film affected the formation and rupture of conductive ***,the short-term plasticity and long-term plasticity of biological synapse were simulated by evaluating the conductance responses of Al/Cs_(3)Bi_(2)X_(9)(X=I,Br,and Cl)/ITO devices under various voltage pulses in *** duration time of long-term plasticity in all the present devices can last for up to 250 *** 0D-Cs_(3)Bi_(2)I_(9)device showed both the highest spikeduration-dependent plasticity and paired-pulse facilitation indexes compared to the other two ***,the 0DCs_(3)Bi_(2)I_(9)device successfully established the associative learning behavior by simulating the Pavlov’s dog experiment.

关键词： perovskite films low-dimension resistive switching artificial synapse

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