Ultrathin Self-Assembly Two-Dimensional Metal-Organic Framework Films as Hole Transport Layers in Ideal-Bandgap Perovskite Solar Cells

Jiupeng Cao; Chun Ki Liu; Venkatesh Piradi; Hok Leung Loi; Tianyue Wang; Haiyang Cheng; Xunjin Zhu; Feng Yan

doi:10.1021/acsenergylett.2c01714

Ultrathin Self-Assembly Two-Dimensional Metal-Organic Framework Films as Hole Transport Layers in Ideal-Bandgap Perovskite Solar Cells

Jiupeng Cao, Chun Ki Liu, Venkatesh Piradi, Hok Leung Loi, Tianyue Wang, Haiyang Cheng, Xunjin Zhu, Feng Yan^*

^*Corresponding author for this work

Department of Chemistry

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

24 Citations (Scopus)

Abstract

Two-dimensional conjugated metal–organic framework (2D c-MOF) Cu₃(HHTT)₂ (2,3,7,8,12,13-hexahydroxytetraazanaphthotetraphene, HHTT) is found to be an ideal hole transport material for Pb–Sn perovskite solar cells (PSCs) for the first time. 2D c-MOF films are conveniently prepared by a self-assembly deposition method and used in ideal-bandgap Pb–Sn mixed PSCs. The ultrasmooth surface of the Cu₃(HHTT)₂ film can facilitate perovskite growth and enable defect passivation on the perovskite surface. The self-assembly approach is suitable for preparing large-area films conformally on a substrate, promising the application of the film in large-area devices. Encouragingly, an efficiency over 22% is obtained from ideal-bandgap PSCs. Moreover, an efficiency of 19.86% for large-area ideal-bandgap PSCs is achieved from devices with an area of 1 cm². This work demonstrates that 2D c-MOFs are promising charge transport materials for high-efficiency and large-area PSCs.

Original language	English
Pages (from-to)	3362-3369
Number of pages	8
Journal	ACS Energy Letters
Volume	7
Issue number	10
DOIs	https://doi.org/10.1021/acsenergylett.2c01714
Publication status	Published - 14 Oct 2022

Scopus Subject Areas

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

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10.1021/acsenergylett.2c01714

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title = "Ultrathin Self-Assembly Two-Dimensional Metal-Organic Framework Films as Hole Transport Layers in Ideal-Bandgap Perovskite Solar Cells",

abstract = "Two-dimensional conjugated metal–organic framework (2D c-MOF) Cu3(HHTT)2 (2,3,7,8,12,13-hexahydroxytetraazanaphthotetraphene, HHTT) is found to be an ideal hole transport material for Pb–Sn perovskite solar cells (PSCs) for the first time. 2D c-MOF films are conveniently prepared by a self-assembly deposition method and used in ideal-bandgap Pb–Sn mixed PSCs. The ultrasmooth surface of the Cu3(HHTT)2 film can facilitate perovskite growth and enable defect passivation on the perovskite surface. The self-assembly approach is suitable for preparing large-area films conformally on a substrate, promising the application of the film in large-area devices. Encouragingly, an efficiency over 22% is obtained from ideal-bandgap PSCs. Moreover, an efficiency of 19.86% for large-area ideal-bandgap PSCs is achieved from devices with an area of 1 cm2. This work demonstrates that 2D c-MOFs are promising charge transport materials for high-efficiency and large-area PSCs.",

author = "Jiupeng Cao and Liu, {Chun Ki} and Venkatesh Piradi and Loi, {Hok Leung} and Tianyue Wang and Haiyang Cheng and Xunjin Zhu and Feng Yan",

note = "Funding Information: This work is financially supported by the Research Grants Council (RGC) of Hong Kong, China (Project No. 15210319), the Innovation and Technology Commission of Hong Kong, China (Innovation and Technology Fund-Guangdong-Hong Kong Technology Cooperation Funding Scheme (ITF-TCFS), Project No. GHP/042/19SZ), and The Hong Kong Polytechnic University, Hong Kong, China (ZE2X and CD46). Publisher Copyright: {\textcopyright} 2022 American Chemical Society",

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T1 - Ultrathin Self-Assembly Two-Dimensional Metal-Organic Framework Films as Hole Transport Layers in Ideal-Bandgap Perovskite Solar Cells

AU - Cao, Jiupeng

AU - Liu, Chun Ki

AU - Piradi, Venkatesh

AU - Loi, Hok Leung

AU - Wang, Tianyue

AU - Cheng, Haiyang

AU - Zhu, Xunjin

AU - Yan, Feng

N1 - Funding Information: This work is financially supported by the Research Grants Council (RGC) of Hong Kong, China (Project No. 15210319), the Innovation and Technology Commission of Hong Kong, China (Innovation and Technology Fund-Guangdong-Hong Kong Technology Cooperation Funding Scheme (ITF-TCFS), Project No. GHP/042/19SZ), and The Hong Kong Polytechnic University, Hong Kong, China (ZE2X and CD46). Publisher Copyright: © 2022 American Chemical Society

PY - 2022/10/14

Y1 - 2022/10/14

N2 - Two-dimensional conjugated metal–organic framework (2D c-MOF) Cu3(HHTT)2 (2,3,7,8,12,13-hexahydroxytetraazanaphthotetraphene, HHTT) is found to be an ideal hole transport material for Pb–Sn perovskite solar cells (PSCs) for the first time. 2D c-MOF films are conveniently prepared by a self-assembly deposition method and used in ideal-bandgap Pb–Sn mixed PSCs. The ultrasmooth surface of the Cu3(HHTT)2 film can facilitate perovskite growth and enable defect passivation on the perovskite surface. The self-assembly approach is suitable for preparing large-area films conformally on a substrate, promising the application of the film in large-area devices. Encouragingly, an efficiency over 22% is obtained from ideal-bandgap PSCs. Moreover, an efficiency of 19.86% for large-area ideal-bandgap PSCs is achieved from devices with an area of 1 cm2. This work demonstrates that 2D c-MOFs are promising charge transport materials for high-efficiency and large-area PSCs.

AB - Two-dimensional conjugated metal–organic framework (2D c-MOF) Cu3(HHTT)2 (2,3,7,8,12,13-hexahydroxytetraazanaphthotetraphene, HHTT) is found to be an ideal hole transport material for Pb–Sn perovskite solar cells (PSCs) for the first time. 2D c-MOF films are conveniently prepared by a self-assembly deposition method and used in ideal-bandgap Pb–Sn mixed PSCs. The ultrasmooth surface of the Cu3(HHTT)2 film can facilitate perovskite growth and enable defect passivation on the perovskite surface. The self-assembly approach is suitable for preparing large-area films conformally on a substrate, promising the application of the film in large-area devices. Encouragingly, an efficiency over 22% is obtained from ideal-bandgap PSCs. Moreover, an efficiency of 19.86% for large-area ideal-bandgap PSCs is achieved from devices with an area of 1 cm2. This work demonstrates that 2D c-MOFs are promising charge transport materials for high-efficiency and large-area PSCs.

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DO - 10.1021/acsenergylett.2c01714

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JO - ACS Energy Letters

JF - ACS Energy Letters

IS - 10

ER -

Ultrathin Self-Assembly Two-Dimensional Metal-Organic Framework Films as Hole Transport Layers in Ideal-Bandgap Perovskite Solar Cells

Abstract

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