Self-Enhancement of Efficiency and Self-Attenuation of Hysteretic Behavior of Perovskite Solar Cells with Aging

Yuxi Zhang; Yanqing Zhu; Min Hu; Narendra Pai; Tianshi Qin; Yi Bing Cheng; Udo Bach; Alexandr N. Simonov; Jianfeng Lu

doi:10.1021/acs.jpclett.2c00278

Self-Enhancement of Efficiency and Self-Attenuation of Hysteretic Behavior of Perovskite Solar Cells with Aging

Yuxi Zhang
, Yanqing Zhu
, Min Hu
, Narendra Pai
, Tianshi Qin
, Yi Bing Cheng
, Udo Bach
, Alexandr N. Simonov
, Jianfeng Lu

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

24 Citations (Scopus)

Abstract

Spontaneous enhancement of the photovoltaic performance of perovskite solar cells (PSCs) after aging has been reported, but the underlying reasons for such behavior are still under debate. Herein, we demonstrate that this spontaneous improvement effect accompanied by self-attenuation of hysteresis in the current-voltage characteristics is time- and temperature-dependent. Moreover, it is universal to PSCs based on a range of mixed-ion perovskites and coupled to different hole- and electron-transporting materials. Time-resolved confocal fluorescence microscopy and other characterization techniques suggest that the "self-healing" phenomenon is accompanied by the homogenization and enhancement of the charge extraction efficiency as well as suppressed recombination throughout cm²-scale perovskite layers. These dynamic effects need to be accounted for when assessing the initial and stabilized performance of PSCs.

Original language	English
Pages (from-to)	2792-2799
Number of pages	8
Journal	Journal of Physical Chemistry Letters
Volume	13
Issue number	12
DOIs	https://doi.org/10.1021/acs.jpclett.2c00278
Publication status	Published - 31 Mar 2022

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SDG 7 Affordable and Clean Energy

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10.1021/acs.jpclett.2c00278

377623243-oaAccepted author manuscript, 848 KBLicence: Unspecified

Cite this

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title = "Self-Enhancement of Efficiency and Self-Attenuation of Hysteretic Behavior of Perovskite Solar Cells with Aging",

abstract = "Spontaneous enhancement of the photovoltaic performance of perovskite solar cells (PSCs) after aging has been reported, but the underlying reasons for such behavior are still under debate. Herein, we demonstrate that this spontaneous improvement effect accompanied by self-attenuation of hysteresis in the current-voltage characteristics is time- and temperature-dependent. Moreover, it is universal to PSCs based on a range of mixed-ion perovskites and coupled to different hole- and electron-transporting materials. Time-resolved confocal fluorescence microscopy and other characterization techniques suggest that the {"}self-healing{"} phenomenon is accompanied by the homogenization and enhancement of the charge extraction efficiency as well as suppressed recombination throughout cm2-scale perovskite layers. These dynamic effects need to be accounted for when assessing the initial and stabilized performance of PSCs.",

author = "Yuxi Zhang and Yanqing Zhu and Min Hu and Narendra Pai and Tianshi Qin and Cheng, \{Yi Bing\} and Udo Bach and Simonov, \{Alexandr N.\} and Jianfeng Lu",

note = "Funding Information: SEM and XRD data presented in this Letter were collected using the facilities at Monash Centre for Electron Microscopy and Monash X-ray platform. This work was financially supported by the National Natural Science Foundation of China (52002302, 22075221, and 91963209), the Natural Science Foundation of Hubei Province (2020CFB172), and the National Key Research and Development Plan (SQ2019YFE010779). U.B. is grateful to the Australian Research Council (ARC) Centre of Excellence in Exciton Science (CE170100026) and the Australian Centre for Advanced Photovoltaics (ACAP) for financial support. A.N.S. gratefully acknowledges financial support from ARC through the Future Fellowship (FT200100317). Publisher Copyright: {\textcopyright} 2022 American Chemical Society. All rights reserved.",

year = "2022",

month = mar,

day = "31",

doi = "10.1021/acs.jpclett.2c00278",

language = "English",

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AU - Zhang, Yuxi

AU - Zhu, Yanqing

AU - Hu, Min

AU - Pai, Narendra

AU - Qin, Tianshi

AU - Cheng, Yi Bing

AU - Bach, Udo

AU - Simonov, Alexandr N.

AU - Lu, Jianfeng

N1 - Funding Information: SEM and XRD data presented in this Letter were collected using the facilities at Monash Centre for Electron Microscopy and Monash X-ray platform. This work was financially supported by the National Natural Science Foundation of China (52002302, 22075221, and 91963209), the Natural Science Foundation of Hubei Province (2020CFB172), and the National Key Research and Development Plan (SQ2019YFE010779). U.B. is grateful to the Australian Research Council (ARC) Centre of Excellence in Exciton Science (CE170100026) and the Australian Centre for Advanced Photovoltaics (ACAP) for financial support. A.N.S. gratefully acknowledges financial support from ARC through the Future Fellowship (FT200100317). Publisher Copyright: © 2022 American Chemical Society. All rights reserved.

PY - 2022/3/31

Y1 - 2022/3/31

N2 - Spontaneous enhancement of the photovoltaic performance of perovskite solar cells (PSCs) after aging has been reported, but the underlying reasons for such behavior are still under debate. Herein, we demonstrate that this spontaneous improvement effect accompanied by self-attenuation of hysteresis in the current-voltage characteristics is time- and temperature-dependent. Moreover, it is universal to PSCs based on a range of mixed-ion perovskites and coupled to different hole- and electron-transporting materials. Time-resolved confocal fluorescence microscopy and other characterization techniques suggest that the "self-healing" phenomenon is accompanied by the homogenization and enhancement of the charge extraction efficiency as well as suppressed recombination throughout cm2-scale perovskite layers. These dynamic effects need to be accounted for when assessing the initial and stabilized performance of PSCs.

AB - Spontaneous enhancement of the photovoltaic performance of perovskite solar cells (PSCs) after aging has been reported, but the underlying reasons for such behavior are still under debate. Herein, we demonstrate that this spontaneous improvement effect accompanied by self-attenuation of hysteresis in the current-voltage characteristics is time- and temperature-dependent. Moreover, it is universal to PSCs based on a range of mixed-ion perovskites and coupled to different hole- and electron-transporting materials. Time-resolved confocal fluorescence microscopy and other characterization techniques suggest that the "self-healing" phenomenon is accompanied by the homogenization and enhancement of the charge extraction efficiency as well as suppressed recombination throughout cm2-scale perovskite layers. These dynamic effects need to be accounted for when assessing the initial and stabilized performance of PSCs.

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EP - 2799

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 12

ER -

Self-Enhancement of Efficiency and Self-Attenuation of Hysteretic Behavior of Perovskite Solar Cells with Aging

Abstract

UN SDGs

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New dimensions of electrocatalyst design for sustainable energy future

ARC Centre of Excellence in Exciton Science

Monash Centre for Electron Microscopy (MCEM)

Monash X-ray Platform (MXP)

Cite this

Self-Enhancement of Efficiency and Self-Attenuation of Hysteretic Behavior of Perovskite Solar Cells with Aging

Abstract

UN SDGs

Access to Document

Other files and links

Projects

New dimensions of electrocatalyst design for sustainable energy future

ARC Centre of Excellence in Exciton Science

Equipment

Monash Centre for Electron Microscopy (MCEM)

Monash X-ray Platform (MXP)

Cite this