Simultaneously enhancing moisture and mechanical stability of flexible perovskite solar cells via a polyimide interfacial layer

Zhuoxi Li; Xiangyu Kong; Yue Jiang; Xubing Lu; Xinseng Gao; Chaoliang Tan; Yiwang Chen; Guofu Zhou; Jun-Ming Liu; Jinwei Gao

doi:10.20517/ss.2021.06

Simultaneously enhancing moisture and mechanical stability of flexible perovskite solar cells via a polyimide interfacial layer

Zhuoxi Li
, Xiangyu Kong
, Yue Jiang
, Xubing Lu
, Xinseng Gao
, Chaoliang Tan
, Yiwang Chen
, Guofu Zhou
, Jun-Ming Liu
, Jinwei Gao

Department of Electrical Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

16 Citations (Scopus)

41 Downloads (CityUHK Scholars)

Abstract

Perovskite solar cells (PSCs) have aroused tremendous attention due to the high power conversion efficiency (PCE) and flexibility of the organic-inorganic hybrid perovskite films. However, the commercialization of perovskite solar cells is still impeded due to the instability issue induced by moisture and mechanical stress. Herein, we introduce soluble hydrophobic polyimide (PI) as an interfacial layer on top of the perovskite film to block the infiltration of moisture into the perovskite film. The MAPbI3-based solar cell with the insertion of PI layer exhibited an impressive stability, maintaining 87% of the initial PCE even after exposing to 50% relative humidity for 550 h and presenting a decent PCE of 21.22% due to its ability to extract holes and reduce trap-assisted recombination. Moreover, the high tolerance of PI to the mechanical stress gives a more stable flexibility to the PSCs under constant bending. © The Author(s) 2021.

Original language	English
Article number	4
Number of pages	10
Journal	Soft Science
Volume	1
Issue number	1
Online published	31 Jul 2021
DOIs	https://doi.org/10.20517/ss.2021.06
Publication status	Published - Aug 2021

Funding

The authors gratefully acknowledge the funding support by NSFC Funds (U1801256, 51803064), Science and Technology Programs of Guangzhou (2019050001, 202002030130), International Cooperation Projects of Guangdong Province (2020A0505100054), Guangdong Provincial Key Laboratory of Optical Information Materials and Technology (2017B030301007), and Collaborative Research Fund (CRF C7018-20GF) of Hong Kong Research Grants Council. We also thank the support from the Guangdong Provincial Engineering Technology Research Center for Transparent Conductive Materials, and the Open Fund of the Key Laboratory of Functional Molecular Engineering of Guangdong Province (2018kfxx, South China University of Technology).

UN SDGs

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

SDG 7 Affordable and Clean Energy

Research Keywords

Stability
hydrophobic
charge extraction
perovskite solar cells

Publisher's Copyright Statement

This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

RGC Funding Information

RGC-funded

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title = "Simultaneously enhancing moisture and mechanical stability of flexible perovskite solar cells via a polyimide interfacial layer",

abstract = "Perovskite solar cells (PSCs) have aroused tremendous attention due to the high power conversion efficiency (PCE) and flexibility of the organic-inorganic hybrid perovskite films. However, the commercialization of perovskite solar cells is still impeded due to the instability issue induced by moisture and mechanical stress. Herein, we introduce soluble hydrophobic polyimide (PI) as an interfacial layer on top of the perovskite film to block the infiltration of moisture into the perovskite film. The MAPbI3-based solar cell with the insertion of PI layer exhibited an impressive stability, maintaining 87\% of the initial PCE even after exposing to 50\% relative humidity for 550 h and presenting a decent PCE of 21.22\% due to its ability to extract holes and reduce trap-assisted recombination. Moreover, the high tolerance of PI to the mechanical stress gives a more stable flexibility to the PSCs under constant bending. {\textcopyright} The Author(s) 2021.",

keywords = "Stability, hydrophobic, charge extraction, perovskite solar cells",

author = "Zhuoxi Li and Xiangyu Kong and Yue Jiang and Xubing Lu and Xinseng Gao and Chaoliang Tan and Yiwang Chen and Guofu Zhou and Jun-Ming Liu and Jinwei Gao",

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T1 - Simultaneously enhancing moisture and mechanical stability of flexible perovskite solar cells via a polyimide interfacial layer

AU - Li, Zhuoxi

AU - Kong, Xiangyu

AU - Jiang, Yue

AU - Lu, Xubing

AU - Gao, Xinseng

AU - Tan, Chaoliang

AU - Chen, Yiwang

AU - Zhou, Guofu

AU - Liu, Jun-Ming

AU - Gao, Jinwei

PY - 2021/8

Y1 - 2021/8

N2 - Perovskite solar cells (PSCs) have aroused tremendous attention due to the high power conversion efficiency (PCE) and flexibility of the organic-inorganic hybrid perovskite films. However, the commercialization of perovskite solar cells is still impeded due to the instability issue induced by moisture and mechanical stress. Herein, we introduce soluble hydrophobic polyimide (PI) as an interfacial layer on top of the perovskite film to block the infiltration of moisture into the perovskite film. The MAPbI3-based solar cell with the insertion of PI layer exhibited an impressive stability, maintaining 87% of the initial PCE even after exposing to 50% relative humidity for 550 h and presenting a decent PCE of 21.22% due to its ability to extract holes and reduce trap-assisted recombination. Moreover, the high tolerance of PI to the mechanical stress gives a more stable flexibility to the PSCs under constant bending. © The Author(s) 2021.

AB - Perovskite solar cells (PSCs) have aroused tremendous attention due to the high power conversion efficiency (PCE) and flexibility of the organic-inorganic hybrid perovskite films. However, the commercialization of perovskite solar cells is still impeded due to the instability issue induced by moisture and mechanical stress. Herein, we introduce soluble hydrophobic polyimide (PI) as an interfacial layer on top of the perovskite film to block the infiltration of moisture into the perovskite film. The MAPbI3-based solar cell with the insertion of PI layer exhibited an impressive stability, maintaining 87% of the initial PCE even after exposing to 50% relative humidity for 550 h and presenting a decent PCE of 21.22% due to its ability to extract holes and reduce trap-assisted recombination. Moreover, the high tolerance of PI to the mechanical stress gives a more stable flexibility to the PSCs under constant bending. © The Author(s) 2021.

KW - Stability

KW - hydrophobic

KW - charge extraction

KW - perovskite solar cells

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:001320446400003

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85139999060&origin=recordpage

UR - https://www.scopus.com/pages/publications/85139999060

U2 - 10.20517/ss.2021.06

DO - 10.20517/ss.2021.06

M3 - RGC 21 - Publication in refereed journal

SN - 2769-5441

VL - 1

JO - Soft Science

JF - Soft Science

IS - 1

M1 - 4

ER -

Simultaneously enhancing moisture and mechanical stability of flexible perovskite solar cells via a polyimide interfacial layer

Abstract

Funding

UN SDGs

Research Keywords

Publisher's Copyright Statement

RGC Funding Information

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