Stable and low-photovoltage-loss perovskite solar cells by multifunctional passivation

Guang Yang; Zhiwei Ren; Kuan Liu; Minchao Qin; Wanyuan Deng; Hengkai Zhang; Haibing Wang; Jiwei Liang; Feihong Ye; Qiong Liang; Hang Yin; Yuxuan Chen; Yuanlin Zhuang; Siqi Li; Bowei Gao; Jianbo Wang; Tingting Shi; Xin Wang; Xinhui Lu; Hongbin Wu; Jianhui Hou; Dangyuan Lei; Shu Kong So; Yang Yang; Guojia Fang; Gang Li

doi:10.1038/s41566-021-00829-4

Stable and low-photovoltage-loss perovskite solar cells by multifunctional passivation

Guang Yang
, Zhiwei Ren
, Kuan Liu
, Minchao Qin
, Wanyuan Deng
, Hengkai Zhang
, Haibing Wang
, Jiwei Liang
, Feihong Ye
, Qiong Liang
, Hang Yin
, Yuxuan Chen
, Yuanlin Zhuang
, Siqi Li
, Bowei Gao
, Jianbo Wang
, Tingting Shi
, Xin Wang
, Xinhui Lu
, Hongbin Wu

Jianhui Hou, Dangyuan Lei, Shu Kong So, Yang Yang^*, Guojia Fang^*, Gang Li^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

386 Citations (Scopus)

Abstract

Metal halide perovskite solar cells have demonstrated a high power conversion efficiency (PCE), and further enhancement of the PCE requires a reduction of the bandgap-voltage offset (W_OC) and the non-radiative recombination photovoltage loss (ΔV_OC,nr). Here, we report an effective approach for reducing the photovoltage loss through the simultaneous passivation of internal bulk defects and dimensionally graded two-dimensional perovskite interface defects. Through this dimensionally graded perovskite formation approach, an open-circuit voltage (V_OC) of 1.24 V was obtained with a champion PCE of 21.54% in a 1.63 eV perovskite system (maximum V_OC = 1.25 V, W_OC = 0.38 V and ΔV_OC,nr = 0.10 V); we further decreased the W_OC to 0.326 V in a 1.53 eV perovskite system with a V_OC of 1.21 V and a PCE of 23.78% (certified 23.09%). This approach is equally effective in achieving a low W_OC (ΔV_OC,nr) in 1.56 eV and 1.73 eV perovskite solar cell systems, and further leads to the substantially improved operational stability of perovskite solar cells.

Original language	English
Pages (from-to)	681-689
Number of pages	9
Journal	Nature Photonics
Volume	15
Issue number	9
Early online date	5 Jul 2021
DOIs	https://doi.org/10.1038/s41566-021-00829-4
Publication status	Published - Sept 2021

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SDG 7 Affordable and Clean Energy

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10.1038/s41566-021-00829-4

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@article{45f878215c5e4d58b0c2d4af96da0371,

title = "Stable and low-photovoltage-loss perovskite solar cells by multifunctional passivation",

abstract = "Metal halide perovskite solar cells have demonstrated a high power conversion efficiency (PCE), and further enhancement of the PCE requires a reduction of the bandgap-voltage offset (WOC) and the non-radiative recombination photovoltage loss (ΔVOC,nr). Here, we report an effective approach for reducing the photovoltage loss through the simultaneous passivation of internal bulk defects and dimensionally graded two-dimensional perovskite interface defects. Through this dimensionally graded perovskite formation approach, an open-circuit voltage (VOC) of 1.24 V was obtained with a champion PCE of 21.54\% in a 1.63 eV perovskite system (maximum VOC = 1.25 V, WOC = 0.38 V and ΔVOC,nr = 0.10 V); we further decreased the WOC to 0.326 V in a 1.53 eV perovskite system with a VOC of 1.21 V and a PCE of 23.78\% (certified 23.09\%). This approach is equally effective in achieving a low WOC (ΔVOC,nr) in 1.56 eV and 1.73 eV perovskite solar cell systems, and further leads to the substantially improved operational stability of perovskite solar cells.",

author = "Guang Yang and Zhiwei Ren and Kuan Liu and Minchao Qin and Wanyuan Deng and Hengkai Zhang and Haibing Wang and Jiwei Liang and Feihong Ye and Qiong Liang and Hang Yin and Yuxuan Chen and Yuanlin Zhuang and Siqi Li and Bowei Gao and Jianbo Wang and Tingting Shi and Xin Wang and Xinhui Lu and Hongbin Wu and Jianhui Hou and Dangyuan Lei and So, \{Shu Kong\} and Yang Yang and Guojia Fang and Gang Li",

note = "Funding Information: G.L. would like to thank support from the Research Grants Council of Hong Kong (Grant No. C5037-18G, 15246816 and 15218517), the Shenzhen Science and Technology Innovation Commission (Project No. JCYJ20170413154602102, JCYJ20200109105003940) and the funding provided by the Hong Kong Polytechnic University (Project Code: 1-ZE29, 1-BBAS and the Sir Sze-yuen Chung Endowed Professorship Fund (8-8480)). G.F. acknowledges support of the National High Technology Research and Development Program (No. 2015AA050601), the National Natural Science Foundation of China (No. 11674252 and 62074117) and the Natural Science Foundation of Hubei Province (No. 2019AAA020). X.L. and M.Q. acknowledge financial support from the Research Grant Council of Hong Kong (General Research Fund No. 14314216). Publisher Copyright: {\textcopyright} 2021, The Author(s), under exclusive licence to Springer Nature Limited.",

year = "2021",

month = sep,

doi = "10.1038/s41566-021-00829-4",

language = "English",

volume = "15",

pages = "681--689",

journal = "Nature Photonics",

issn = "1749-4885",

publisher = "Nature Publishing Group",

number = "9",

}

Yang, G, Ren, Z, Liu, K, Qin, M, Deng, W, Zhang, H, Wang, H, Liang, J, Ye, F, Liang, Q, Yin, H, Chen, Y, Zhuang, Y, Li, S, Gao, B, Wang, J, Shi, T, Wang, X, Lu, X, Wu, H, Hou, J, Lei, D, So, SK, Yang, Y, Fang, G & Li, G 2021, 'Stable and low-photovoltage-loss perovskite solar cells by multifunctional passivation', Nature Photonics, vol. 15, no. 9, pp. 681-689. https://doi.org/10.1038/s41566-021-00829-4

TY - JOUR

T1 - Stable and low-photovoltage-loss perovskite solar cells by multifunctional passivation

AU - Yang, Guang

AU - Ren, Zhiwei

AU - Liu, Kuan

AU - Qin, Minchao

AU - Deng, Wanyuan

AU - Zhang, Hengkai

AU - Wang, Haibing

AU - Liang, Jiwei

AU - Ye, Feihong

AU - Liang, Qiong

AU - Yin, Hang

AU - Chen, Yuxuan

AU - Zhuang, Yuanlin

AU - Li, Siqi

AU - Gao, Bowei

AU - Wang, Jianbo

AU - Shi, Tingting

AU - Wang, Xin

AU - Lu, Xinhui

AU - Wu, Hongbin

AU - Hou, Jianhui

AU - Lei, Dangyuan

AU - So, Shu Kong

AU - Yang, Yang

AU - Fang, Guojia

AU - Li, Gang

N1 - Funding Information: G.L. would like to thank support from the Research Grants Council of Hong Kong (Grant No. C5037-18G, 15246816 and 15218517), the Shenzhen Science and Technology Innovation Commission (Project No. JCYJ20170413154602102, JCYJ20200109105003940) and the funding provided by the Hong Kong Polytechnic University (Project Code: 1-ZE29, 1-BBAS and the Sir Sze-yuen Chung Endowed Professorship Fund (8-8480)). G.F. acknowledges support of the National High Technology Research and Development Program (No. 2015AA050601), the National Natural Science Foundation of China (No. 11674252 and 62074117) and the Natural Science Foundation of Hubei Province (No. 2019AAA020). X.L. and M.Q. acknowledge financial support from the Research Grant Council of Hong Kong (General Research Fund No. 14314216). Publisher Copyright: © 2021, The Author(s), under exclusive licence to Springer Nature Limited.

PY - 2021/9

Y1 - 2021/9

N2 - Metal halide perovskite solar cells have demonstrated a high power conversion efficiency (PCE), and further enhancement of the PCE requires a reduction of the bandgap-voltage offset (WOC) and the non-radiative recombination photovoltage loss (ΔVOC,nr). Here, we report an effective approach for reducing the photovoltage loss through the simultaneous passivation of internal bulk defects and dimensionally graded two-dimensional perovskite interface defects. Through this dimensionally graded perovskite formation approach, an open-circuit voltage (VOC) of 1.24 V was obtained with a champion PCE of 21.54% in a 1.63 eV perovskite system (maximum VOC = 1.25 V, WOC = 0.38 V and ΔVOC,nr = 0.10 V); we further decreased the WOC to 0.326 V in a 1.53 eV perovskite system with a VOC of 1.21 V and a PCE of 23.78% (certified 23.09%). This approach is equally effective in achieving a low WOC (ΔVOC,nr) in 1.56 eV and 1.73 eV perovskite solar cell systems, and further leads to the substantially improved operational stability of perovskite solar cells.

AB - Metal halide perovskite solar cells have demonstrated a high power conversion efficiency (PCE), and further enhancement of the PCE requires a reduction of the bandgap-voltage offset (WOC) and the non-radiative recombination photovoltage loss (ΔVOC,nr). Here, we report an effective approach for reducing the photovoltage loss through the simultaneous passivation of internal bulk defects and dimensionally graded two-dimensional perovskite interface defects. Through this dimensionally graded perovskite formation approach, an open-circuit voltage (VOC) of 1.24 V was obtained with a champion PCE of 21.54% in a 1.63 eV perovskite system (maximum VOC = 1.25 V, WOC = 0.38 V and ΔVOC,nr = 0.10 V); we further decreased the WOC to 0.326 V in a 1.53 eV perovskite system with a VOC of 1.21 V and a PCE of 23.78% (certified 23.09%). This approach is equally effective in achieving a low WOC (ΔVOC,nr) in 1.56 eV and 1.73 eV perovskite solar cell systems, and further leads to the substantially improved operational stability of perovskite solar cells.

UR - https://www.scopus.com/pages/publications/85109893511

U2 - 10.1038/s41566-021-00829-4

DO - 10.1038/s41566-021-00829-4

M3 - Journal article

AN - SCOPUS:85109893511

SN - 1749-4885

VL - 15

SP - 681

EP - 689

JO - Nature Photonics

JF - Nature Photonics

IS - 9

ER -

Stable and low-photovoltage-loss perovskite solar cells by multifunctional passivation

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