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

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 ZhangJuncai Dong, Yiming Li, Jiangjian Shi, Haibo Jin, Pengwan Chen, Yuchao Sun, Yujing Li, Haining Chen, Zhongming Wei, Huanping Zhou, Qi Chen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

143 Citations (Scopus)

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.

Original language	English
Pages (from-to)	747-754
Number of pages	8
Journal	Science
Volume	378
Issue number	6621
DOIs	https://doi.org/10.1126/science.abn3148
Publication status	Published - 18 Nov 2022

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@article{189c6ae66346415ba2fc3bff82a30a1d,

title = "Initializing film homogeneity to retard phase segregation for stable perovskite solar cells",

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{\textquoteright}s model of segregation to study individual cation migration and found that the initial film inhomogeneity accelerates materials degradation. We fabricated perovskite films (FA1–xCsxPbI3; 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.",

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

year = "2022",

month = nov,

day = "18",

doi = "10.1126/science.abn3148",

language = "English",

volume = "378",

pages = "747--754",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

number = "6621",

}

Bai, Y, Huang, Z, Zhang, X, Lu, J, Niu, X, He, Z, Zhu, C, Xiao, M, Song, Q, Wei, X, Wang, C, Cui, Z, Dou, J, Chen, Y, Pei, F, Zai, H, Wang, W, Song, T, An, P, Zhang, J, Dong, J, Li, Y, Shi, J, Jin, H , Chen, P, Sun, Y, Li, Y, Chen, H, Wei, Z, Zhou, H & Chen, Q 2022, 'Initializing film homogeneity to retard phase segregation for stable perovskite solar cells', Science, vol. 378, no. 6621, pp. 747-754. https://doi.org/10.1126/science.abn3148

TY - JOUR

T1 - Initializing film homogeneity to retard phase segregation for stable perovskite solar cells

AU - Bai, Yang

AU - Huang, Zijian

AU - Zhang, Xiao

AU - Lu, Jiuzhou

AU - Niu, Xiuxiu

AU - He, Ziwen

AU - Zhu, Cheng

AU - Xiao, Mengqi

AU - Song, Qizhen

AU - Wei, Xueyuan

AU - Wang, Chenyue

AU - Cui, Zhenhua

AU - Dou, Jing

AU - Chen, Yihua

AU - Pei, Fengtao

AU - Zai, Huachao

AU - Wang, Wei

AU - Song, Tinglu

AU - An, Pengfei

AU - Zhang, Jing

AU - Dong, Juncai

AU - Li, Yiming

AU - Shi, Jiangjian

AU - Jin, Haibo

AU - Chen, Pengwan

AU - Sun, Yuchao

AU - Li, Yujing

AU - Chen, Haining

AU - Wei, Zhongming

AU - Zhou, Huanping

AU - Chen, Qi

PY - 2022/11/18

Y1 - 2022/11/18

N2 - 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 (FA1–xCsxPbI3; 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.

AB - 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 (FA1–xCsxPbI3; 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.

UR - http://www.scopus.com/inward/record.url?scp=85142140690&partnerID=8YFLogxK

U2 - 10.1126/science.abn3148

DO - 10.1126/science.abn3148

M3 - Article

C2 - 36395230

AN - SCOPUS:85142140690

SN - 0036-8075

VL - 378

SP - 747

EP - 754

JO - Science

JF - Science

IS - 6621

ER -

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

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