Initializing film homogeneity to retard phase segregation for stable perovskite solar cells

Yang Bai; Zijian Huang; Xiao Zhang; Jiuzhou Lu; Xiuxiu Niu; Ziwen He; Cheng Zhu; Mengqi Xiao; Qizhen Song; Xueyuan Wei; Chenyue Wang; Zhenhua Cui; Jing Dou; Yihua Chen; Fengtao Pei; Huachao Zai; Wei Wang; Tinglu Song; Pengfei An; Jing Zhang; Juncai Dong; Yiming Li; Jiangjian Shi; Haibo Jin; Pengwan Chen; Yuchao Sun; Yujing Li; Haining Chen; Zhongming Wei; Huanping Zhou; Qi Chen

doi:10.1126/science.abn3148

Initializing film homogeneity to retard phase segregation for stable perovskite solar cells

Science. 2022 Nov 18;378(6621):747-754. doi: 10.1126/science.abn3148. Epub 2022 Nov 17.

Authors

Yang Bai^#^{1

2}, Zijian Huang^#³, Xiao Zhang^#¹, Jiuzhou Lu^#¹, Xiuxiu Niu^#¹, Ziwen He⁴, Cheng Zhu¹, Mengqi Xiao¹, Qizhen Song¹, Xueyuan Wei¹, Chenyue Wang¹, Zhenhua Cui¹, Jing Dou¹, Yihua Chen¹, Fengtao Pei¹, Huachao Zai³, Wei Wang⁴, Tinglu Song¹, Pengfei An⁵, Jing Zhang⁵, Juncai Dong⁵, Yiming Li⁶, Jiangjian Shi⁶, Haibo Jin¹, Pengwan Chen⁷, Yuchao Sun⁸, Yujing Li¹, Haining Chen⁹, Zhongming Wei¹⁰, Huanping Zhou³, Qi Chen^{1

2}

Affiliations

¹ Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, MIIT Key Laboratory for Low-dimensional Quantum Structure and Devices, Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China.
² Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081, P. R. China.
³ Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China.
⁴ Center for Research on Intelligent Perception and Computing, National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, P. R. China.
⁵ Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P. R. China.
⁶ Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China.
⁷ State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, P. R. China.
⁸ Auner Technology Co., Ltd., Beijing 100084, P. R. China.
⁹ School of Materials Science and Engineering, Beihang University, Beijing 100191, P. R. China.
¹⁰ State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences and Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100083, P. R. China.

^# Contributed equally.

PMID: 36395230
DOI: 10.1126/science.abn3148

Abstract

The mixtures of cations and anions used in hybrid halide perovskites for high-performance solar cells often undergo element and phase segregation, which limits device lifetime. We adapted Schelling's model of segregation to study individual cation migration and found that the initial film inhomogeneity accelerates materials degradation. We fabricated perovskite films (FA_1-xCs_xPbI₃; where FA is formamidinium) through the addition of selenophene, which led to homogeneous cation distribution that retarded cation aggregation during materials processing and device operation. The resultant devices achieved enhanced efficiency and retained >91% of their initial efficiency after 3190 hours at the maximum power point under 1 sun illumination. We also observe prolonged operational lifetime in devices with initially homogeneous FACsPb(Br_0.13I_0.87)₃ absorbers.

Publication types

Research Support, Non-U.S. Gov't