Interfacial Residual Stress Relaxation in Perovskite Solar Cells with Improved Stability

Hao Wang; Cheng Zhu; Lang Liu; Sai Ma; Pengfei Liu; Jiafeng Wu; Congbo Shi; Qin Du; Yanmin Hao; Sisi Xiang; Haining Chen; Pengwan Chen; Yang Bai; Huanping Zhou; Yujing Li; Qi Chen

doi:10.1002/adma.201904408

Interfacial Residual Stress Relaxation in Perovskite Solar Cells with Improved Stability

Hao Wang, Cheng Zhu, Lang Liu, Sai Ma, Pengfei Liu, Jiafeng Wu, Congbo Shi, Qin Du, Yanmin Hao, Sisi Xiang, Haining Chen, Pengwan Chen, Yang Bai, Huanping Zhou, Yujing Li, Qi Chen^*

^*Corresponding author for this work

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

301 Citations (Scopus)

Abstract

To improve the photovoltaic performance (both efficiency and stability) in hybrid organic–inorganic halide perovskite solar cells, perovskite lattice distortion is investigated with regards to residual stress (and strain) in the polycrystalline thin films. It is revealed that residual stress is concentrated at the surface of the as-prepared film, and an efficient method is further developed to release this interfacial stress by A site cation alloying. This results in lattice reconstruction at the surface of polycrystalline thin films, which in turn results in low elastic modulus. Thus, a “bone-joint” configuration is constructed within the interface between the absorber and the carrier transport layer, which improves device performance substantially. The resultant photovoltaic devices exhibit an efficiency of 21.48% with good humidity stability and improved resistance against thermal cycling.

Original language	English
Article number	1904408
Journal	Advanced Materials
Volume	31
Issue number	48
DOIs	https://doi.org/10.1002/adma.201904408
Publication status	Published - 1 Nov 2019

Keywords

bionics
depth resolved grazing incident X-ray diffraction
perovskite solar cells

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/adma.201904408

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@article{67b009620ccd4c60b4ca942a111b6322,

title = "Interfacial Residual Stress Relaxation in Perovskite Solar Cells with Improved Stability",

abstract = "To improve the photovoltaic performance (both efficiency and stability) in hybrid organic–inorganic halide perovskite solar cells, perovskite lattice distortion is investigated with regards to residual stress (and strain) in the polycrystalline thin films. It is revealed that residual stress is concentrated at the surface of the as-prepared film, and an efficient method is further developed to release this interfacial stress by A site cation alloying. This results in lattice reconstruction at the surface of polycrystalline thin films, which in turn results in low elastic modulus. Thus, a “bone-joint” configuration is constructed within the interface between the absorber and the carrier transport layer, which improves device performance substantially. The resultant photovoltaic devices exhibit an efficiency of 21.48% with good humidity stability and improved resistance against thermal cycling.",

keywords = "bionics, depth resolved grazing incident X-ray diffraction, perovskite solar cells",

author = "Hao Wang and Cheng Zhu and Lang Liu and Sai Ma and Pengfei Liu and Jiafeng Wu and Congbo Shi and Qin Du and Yanmin Hao and Sisi Xiang and Haining Chen and Pengwan Chen and Yang Bai and Huanping Zhou and Yujing Li and Qi Chen",

note = "Publisher Copyright: {\textcopyright} 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2019",

month = nov,

day = "1",

doi = "10.1002/adma.201904408",

language = "English",

volume = "31",

journal = "Advanced Materials",

issn = "0935-9648",

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TY - JOUR

T1 - Interfacial Residual Stress Relaxation in Perovskite Solar Cells with Improved Stability

AU - Wang, Hao

AU - Zhu, Cheng

AU - Liu, Lang

AU - Ma, Sai

AU - Liu, Pengfei

AU - Wu, Jiafeng

AU - Shi, Congbo

AU - Du, Qin

AU - Hao, Yanmin

AU - Xiang, Sisi

AU - Chen, Haining

AU - Chen, Pengwan

AU - Bai, Yang

AU - Zhou, Huanping

AU - Li, Yujing

AU - Chen, Qi

PY - 2019/11/1

Y1 - 2019/11/1

N2 - To improve the photovoltaic performance (both efficiency and stability) in hybrid organic–inorganic halide perovskite solar cells, perovskite lattice distortion is investigated with regards to residual stress (and strain) in the polycrystalline thin films. It is revealed that residual stress is concentrated at the surface of the as-prepared film, and an efficient method is further developed to release this interfacial stress by A site cation alloying. This results in lattice reconstruction at the surface of polycrystalline thin films, which in turn results in low elastic modulus. Thus, a “bone-joint” configuration is constructed within the interface between the absorber and the carrier transport layer, which improves device performance substantially. The resultant photovoltaic devices exhibit an efficiency of 21.48% with good humidity stability and improved resistance against thermal cycling.

AB - To improve the photovoltaic performance (both efficiency and stability) in hybrid organic–inorganic halide perovskite solar cells, perovskite lattice distortion is investigated with regards to residual stress (and strain) in the polycrystalline thin films. It is revealed that residual stress is concentrated at the surface of the as-prepared film, and an efficient method is further developed to release this interfacial stress by A site cation alloying. This results in lattice reconstruction at the surface of polycrystalline thin films, which in turn results in low elastic modulus. Thus, a “bone-joint” configuration is constructed within the interface between the absorber and the carrier transport layer, which improves device performance substantially. The resultant photovoltaic devices exhibit an efficiency of 21.48% with good humidity stability and improved resistance against thermal cycling.

KW - bionics

KW - depth resolved grazing incident X-ray diffraction

KW - perovskite solar cells

UR - http://www.scopus.com/inward/record.url?scp=85074084294&partnerID=8YFLogxK

U2 - 10.1002/adma.201904408

DO - 10.1002/adma.201904408

M3 - Article

C2 - 31617644

AN - SCOPUS:85074084294

SN - 0935-9648

VL - 31

JO - Advanced Materials

JF - Advanced Materials

IS - 48

M1 - 1904408

ER -

Interfacial Residual Stress Relaxation in Perovskite Solar Cells with Improved Stability

Abstract

Keywords

UN SDGs

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