Highly Efficient Flexible Perovskite Solar Cells through Pentylammonium Acetate Modification with Certified Efficiency of 23.35%

Danpeng Gao; Bo Li; Zhen Li; Xin Wu; Shoufeng Zhang; Dan Zhao; Xiaofen Jiang; Chunlei Zhang; Yan Wang; Zhenjiang Li; Nan Li; Shuang Xiao; Wallace C. H. Choy; Alex K.-Y. Jen; Shangfeng Yang; Zonglong Zhu

doi:10.1002/adma.202206387

Highly Efficient Flexible Perovskite Solar Cells through Pentylammonium Acetate Modification with Certified Efficiency of 23.35%

Danpeng Gao, Bo Li, Zhen Li, Xin Wu, Shoufeng Zhang, Dan Zhao, Xiaofen Jiang, Chunlei Zhang, Yan Wang, Zhenjiang Li, Nan Li, Shuang Xiao, Wallace C. H. Choy, Alex K.-Y. Jen, Shangfeng Yang^*, Zonglong Zhu^*

^*Corresponding author for this work

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

161 Citations (Scopus)

Abstract

Among the emerging photovoltaic technologies, rigid perovskite solar cells (PSCs) have made tremendous development owing to their exceptional power conversion efficiency (PCE) of up to 25.7%. However, the record PCE of flexible PSCs (≈22.4%) still lags far behind their rigid counterparts and their mechanical stabilities are also not satisfactory. Herein, through modifying the interface between perovskite and hole transport layer via pentylammonium acetate (PenAAc) molecule a highly efficient and stable flexible inverted PSC is reported. Through synthetic manipulation of anion and cation, it is shown that the PenA⁺ and Ac⁻ have strong chemical binding with both acceptor and donor defects of surface-terminating ends on perovskite films. The PenAAc-modified flexible PSCs achieve a record PCE of 23.68% (0.08 cm², certified: 23.35%) with a high open-circuit voltage (V_OC) of 1.17 V. Large-area devices (1.0 cm²) also realized an exceptional PCE of 21.52%. Moreover, the fabricated devices show excellent stability under mechanical bending, with PCE remaining above 91% of the original PCE even after 5000 bends.

Original language	English
Article number	2206387
Journal	Advanced Materials
Volume	35
Issue number	3
Online published	14 Dec 2022
DOIs	https://doi.org/10.1002/adma.202206387
Publication status	Published - 19 Jan 2023

Funding

D.G. and B.L. contributed equally to this work. The work was supported by Innovation and Technology Fund (ITS/095/20, GHP/100/20SZ, GHP/102/20GD, and MRP/040/21X), the ECS grant (21301319) and GRF grant (11306521) from the Research Grants Council of Hong Kong, Green Tech Fund (GTF202020164), Guangdong Provincial Science and Technology Plan (2021A0505110003), Natural Science Foundation of Guangdong Province (2019A1515010761), and the Science Technology and Innovation Committee of Shenzhen Municipality (SGDX20210823104002015). S.Y. acknowledges the National Key Research and Development Program of China (2017YFA0402800) and the National Natural Science Foundation of China (51925206 and U1932214).

Research Keywords

flexible solar cells
high efficiency
interface modification
mechanical stability
perovskites

RGC Funding Information

RGC-funded

UN SDGs

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

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Gao, D., Li, B., Li, Z., Wu, X., Zhang, S., Zhao, D., Jiang, X., Zhang, C., Wang, Y., Li, Z., Li, N., Xiao, S., Choy, W. C. H., Jen, A. K.-Y., Yang, S., & Zhu, Z. (2023). Highly Efficient Flexible Perovskite Solar Cells through Pentylammonium Acetate Modification with Certified Efficiency of 23.35%. Advanced Materials, 35(3), Article 2206387. https://doi.org/10.1002/adma.202206387

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title = "Highly Efficient Flexible Perovskite Solar Cells through Pentylammonium Acetate Modification with Certified Efficiency of 23.35%",

abstract = "Among the emerging photovoltaic technologies, rigid perovskite solar cells (PSCs) have made tremendous development owing to their exceptional power conversion efficiency (PCE) of up to 25.7%. However, the record PCE of flexible PSCs (≈22.4%) still lags far behind their rigid counterparts and their mechanical stabilities are also not satisfactory. Herein, through modifying the interface between perovskite and hole transport layer via pentylammonium acetate (PenAAc) molecule a highly efficient and stable flexible inverted PSC is reported. Through synthetic manipulation of anion and cation, it is shown that the PenA+ and Ac− have strong chemical binding with both acceptor and donor defects of surface-terminating ends on perovskite films. The PenAAc-modified flexible PSCs achieve a record PCE of 23.68% (0.08 cm2, certified: 23.35%) with a high open-circuit voltage (VOC) of 1.17 V. Large-area devices (1.0 cm2) also realized an exceptional PCE of 21.52%. Moreover, the fabricated devices show excellent stability under mechanical bending, with PCE remaining above 91% of the original PCE even after 5000 bends.",

keywords = "flexible solar cells, high efficiency, interface modification, mechanical stability, perovskites",

author = "Danpeng Gao and Bo Li and Zhen Li and Xin Wu and Shoufeng Zhang and Dan Zhao and Xiaofen Jiang and Chunlei Zhang and Yan Wang and Zhenjiang Li and Nan Li and Shuang Xiao and Choy, {Wallace C. H.} and Jen, {Alex K.-Y.} and Shangfeng Yang and Zonglong Zhu",

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month = jan,

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doi = "10.1002/adma.202206387",

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AU - Gao, Danpeng

AU - Li, Bo

AU - Li, Zhen

AU - Wu, Xin

AU - Zhang, Shoufeng

AU - Zhao, Dan

AU - Jiang, Xiaofen

AU - Zhang, Chunlei

AU - Wang, Yan

AU - Li, Zhenjiang

AU - Li, Nan

AU - Xiao, Shuang

AU - Choy, Wallace C. H.

AU - Jen, Alex K.-Y.

AU - Yang, Shangfeng

AU - Zhu, Zonglong

PY - 2023/1/19

Y1 - 2023/1/19

N2 - Among the emerging photovoltaic technologies, rigid perovskite solar cells (PSCs) have made tremendous development owing to their exceptional power conversion efficiency (PCE) of up to 25.7%. However, the record PCE of flexible PSCs (≈22.4%) still lags far behind their rigid counterparts and their mechanical stabilities are also not satisfactory. Herein, through modifying the interface between perovskite and hole transport layer via pentylammonium acetate (PenAAc) molecule a highly efficient and stable flexible inverted PSC is reported. Through synthetic manipulation of anion and cation, it is shown that the PenA+ and Ac− have strong chemical binding with both acceptor and donor defects of surface-terminating ends on perovskite films. The PenAAc-modified flexible PSCs achieve a record PCE of 23.68% (0.08 cm2, certified: 23.35%) with a high open-circuit voltage (VOC) of 1.17 V. Large-area devices (1.0 cm2) also realized an exceptional PCE of 21.52%. Moreover, the fabricated devices show excellent stability under mechanical bending, with PCE remaining above 91% of the original PCE even after 5000 bends.

AB - Among the emerging photovoltaic technologies, rigid perovskite solar cells (PSCs) have made tremendous development owing to their exceptional power conversion efficiency (PCE) of up to 25.7%. However, the record PCE of flexible PSCs (≈22.4%) still lags far behind their rigid counterparts and their mechanical stabilities are also not satisfactory. Herein, through modifying the interface between perovskite and hole transport layer via pentylammonium acetate (PenAAc) molecule a highly efficient and stable flexible inverted PSC is reported. Through synthetic manipulation of anion and cation, it is shown that the PenA+ and Ac− have strong chemical binding with both acceptor and donor defects of surface-terminating ends on perovskite films. The PenAAc-modified flexible PSCs achieve a record PCE of 23.68% (0.08 cm2, certified: 23.35%) with a high open-circuit voltage (VOC) of 1.17 V. Large-area devices (1.0 cm2) also realized an exceptional PCE of 21.52%. Moreover, the fabricated devices show excellent stability under mechanical bending, with PCE remaining above 91% of the original PCE even after 5000 bends.

KW - flexible solar cells

KW - high efficiency

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Highly Efficient Flexible Perovskite Solar Cells through Pentylammonium Acetate Modification with Certified Efficiency of 23.35%

Abstract

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UN SDGs

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ITF: Development of Large-area Perovskite Films by Vapor Growth Methods for High-performance and Stable Photovoltaic Modules

ITF: Design and Fabrication of High-performance Flexible Perovskite/CIGS Tandem Solar Cell

GTF_EPD: Development of Printable Perovskite Solar Cells for Transformative Clean Energy and Sustainable Society

Cite this

Highly Efficient Flexible Perovskite Solar Cells through Pentylammonium Acetate Modification with Certified Efficiency of 23.35%

Abstract

Funding

Research Keywords

RGC Funding Information

UN SDGs

Access Output

Other Access Options

Permanent Link

Other Files and Links

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Projects

ITF: Development of Large-area Perovskite Films by Vapor Growth Methods for High-performance and Stable Photovoltaic Modules

ITF: Design and Fabrication of High-performance Flexible Perovskite/CIGS Tandem Solar Cell

GTF_EPD: Development of Printable Perovskite Solar Cells for Transformative Clean Energy and Sustainable Society

Cite this