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

被引：192

作者：

Bai, Yang ^{[1
,2
]}

Huang, Zijian ^{[3
]}

Zhang, Xiao ^{[1
]}

Lu, Jiuzhou ^{[1
]}

Niu, Xiuxiu ^{[1
]}

He, Ziwen ^{[4
]}

Zhu, Cheng ^{[1
]}

Xiao, Mengqi ^{[1
]}

Song, Qizhen ^{[1
]}

Wei, Xueyuan ^{[1
]}

Wang, Chenyue ^{[1
]}

Cui, Zhenhua ^{[1
]}

Dou, Jing ^{[1
]}

Chen, Yihua ^{[1
]}

Pei, Fengtao ^{[1
]}

Zai, Huachao ^{[3
]}

Wang, Wei ^{[4
]}

Song, Tinglu ^{[1
]}

An, Pengfei ^{[5
]}

Zhang, Jing ^{[5
]}

Dong, Juncai ^{[5
]}

Li, Yiming ^{[6
]}

Shi, Jiangjian ^{[6
]}

Jin, Haibo ^{[1
]}

Chen, Pengwan ^{[7
]}

Sun, Yuchao ^{[8
]}

Li, Yujing ^{[1
]}

Chen, Haining ^{[9
]}

Wei, Zhongming ^{[10
,11
]}

Zhou, Huanping ^{[3
]}

Chen, Qi ^{[1
,2
]}

机构：

[1] Beijing Inst Technol, Expt Ctr Adv Mat, MIIT Key Lab Lowdimens Quantum Struct & Devices, Beijing Key Lab Construct Tailorable Adv Funct M, Beijing 100081, Peoples R China

[2] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China

[3] Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China

[4] Chinese Acad Sci, Natl Lab Pattern Recognit, Inst Automat, Ctr Res Intelligent Percept & Comp, Beijing 100190, Peoples R China

[5] Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China

[6] Chinese Acad Sci, Beijing Key Lab New Energy Mat & Devices, Key Lab Renewable Energy, Beijing 100190, Peoples R China

[7] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing Inst Technol, Beijing 100081, Peoples R China

[8] Auner Technol Co Ltd, Beijing 100084, Peoples R China

[9] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[10] Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China

[11] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100083, Peoples R China

来源：

SCIENCE | 2022年 / 378卷 / 6621期

基金：

中国国家自然科学基金;

关键词：

LEAD IODIDE PEROVSKITE; HALIDE PEROVSKITES; EFFICIENCY; FORMAMIDINIUM; PERFORMANCE; STABILITY; CATION; DEGRADATION;

D O I：

10.1126/science.abn3148

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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-x)Cs(x)PbI(3); 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(Br0.13I0.87)(3) absorbers.

引用

页码：747 / 754

页数：8

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