高性能、光冲击稳定的钙钛矿室内光伏器件  

High-performance pulse light stable perovskite indoor photovoltaics

作　　者：李宸 孙浩轩 王旻 甘山 豆达 李亮 Chen Li;Haoxuan Sun;Min Wang;Shan Gan;Da Dou;Liang Li(School of Physical Science and Technology,Jiangsu Key Laboratory of Thin Films,Center for Energy Conversion Materials&Physics(CECMP),Soochow University,Suzhou 215006,China)

机构地区：[1]School of Physical Science and Technology,Jiangsu Key Laboratory of Thin Films,Center for Energy Conversion Materials&Physics(CECMP),Soochow University,Suzhou 215006,China

出　　处：《Science Bulletin》2024年第3期334-344,共11页科学通报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(52332008,52025028,and 52202273);the Natural Science Foundation of Jiangsu Province(BK20210728);the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions.

摘　　要：Perovskite solar cells offer great potential as a sustainable power source for distributed electronic devices that operate indoors.However,the impact of advanced lighting technology,especially the widely used pulse width modulation(PWM)technology,on perovskite photovoltaics has been ignored.Herein,for the first time in photovoltaics,we find that the light impact emitted by the PWM lighting system caused dynamic strain in perovskite thin films,induced phase separation,and accelerated the generation of metallic lead(Pb^(0))defects,leading to irreversible degradation of the cell performance after 27 h(T_(80)).To address this issue,formamidinium triiodide(FAI_(3))is chosen to treat the surface of the perovskite and release residual stress,resulting in reduced lattice deformation during dynamic strain processes.Meanwhile,it suppresses harmful Pb0 defects and reduces Voc loss at low light intensity.The champion device achieves impressive power conversion efficiency(PCE)of 35.14%and retains 99.5%of the initial PCE after continuous strobe light soaking for 2160 h.

关 键 词：Perovskite solar cells Indoor photovoltaics Interface engineering Micro-strain releasing 

分 类 号：TM914.4[电气工程—电力电子与电力传动]