Conjugated linker-boosted self-assembled monolayer molecule for inverted perovskite solar cells

Geping Qu; Siyuan Cai; Ying Qiao; Deng Wang; Shaokuan Gong; Danish Khan; Yu Wang; Kui Jiang; Qian Chen; Letian Zhang; Yang-Gang Wang; Xihan Chen; Alex K.-Y Jen; Zong-Xiang Xu

doi:10.1016/j.joule.2024.05.005

Conjugated linker-boosted self-assembled monolayer molecule for inverted perovskite solar cells

Geping Qu, Siyuan Cai, Ying Qiao, Deng Wang, Shaokuan Gong, Danish Khan, Yu Wang, Kui Jiang, Qian Chen, Letian Zhang, Yang-Gang Wang, Xihan Chen^*, Alex K.-Y Jen^*, Zong-Xiang Xu^*

^*Corresponding author for this work

Department of Materials Science and Engineering

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

142 Citations (Scopus)

Abstract

This study builds upon the success achieved from commercial self-assembled monolayers (SAMs), such as Me-4PACz, by replacing its flexible butyl linker with a conjugated phenylene ring to form a SAM molecule, Me-PhpPACz, for inverted perovskite solar cells (PSCs). The Me-PhpPACz-derived PSCs exhibited an unprecedented power conversion efficiency of 26.17% with an extremely high fill factor of 86.79% and exceptional long-term stability. The result from ultrafast spectroscopy shows that phenylene-linked SAMs not only modulate the work function of indium tin oxide electrode but also facilitate charge carrier extraction and transport. Our detailed study helps deepen our understanding of the delicate relationship between SAM molecular design and PSC performance, paving the way for further enhancing the efficiency and stability of PSCs.

© 2024 Elsevier Inc.

Original language	English
Pages (from-to)	2123-2134
Journal	Joule
Volume	8
Issue number	7
Online published	30 May 2024
DOIs	https://doi.org/10.1016/j.joule.2024.05.005
Publication status	Published - 17 Jul 2024

Funding

This work was supported by the National Key Research and Development Project of the Ministry of Science and Technology of China (no. 2021YFB3800103 ), the National Natural Science Foundation of China (no. 21975116 ), the Natural Science Foundation of Guangdong Province ( 2023A1515011145 ), the Shenzhen-Hong Kong-Macau Science and Technology Plan C (no. SGDX20210823104205034 ), the Shenzhen Science and Technology Innovation Commission ( 20231115141039001 , JCYJ20220530114809022 , and DSYS20220527171403009 ), the Guangdong Provincial University Science and Technology Program (grant no. 2023KTSCX119 ), and the Guangdong Major Project of Basic and Applied Basic Research ( 2023B0303000002 ). A.K.-Y.J. thanks the sponsorship of the Lee Shau-Kee Chair Professor (Materials Science), the TCFS grant ( GHP/018/20SZ ) and MRP grant ( MRP/040/21X ) from the Innovation and Technology Commission of Hong Kong , and the GRF grants ( 11307621 and 11316422 ) from the Research Grants Council of Hong Kong . The authors acknowledge the assistance provided by the SUSTech Core Research Facilities.

Research Keywords

conjugated linker
dipole moment
hole-selected layer
inverted perovskite solar cell
molecular alignment
self-assembled monolayer

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abstract = "This study builds upon the success achieved from commercial self-assembled monolayers (SAMs), such as Me-4PACz, by replacing its flexible butyl linker with a conjugated phenylene ring to form a SAM molecule, Me-PhpPACz, for inverted perovskite solar cells (PSCs). The Me-PhpPACz-derived PSCs exhibited an unprecedented power conversion efficiency of 26.17% with an extremely high fill factor of 86.79% and exceptional long-term stability. The result from ultrafast spectroscopy shows that phenylene-linked SAMs not only modulate the work function of indium tin oxide electrode but also facilitate charge carrier extraction and transport. Our detailed study helps deepen our understanding of the delicate relationship between SAM molecular design and PSC performance, paving the way for further enhancing the efficiency and stability of PSCs. {\textcopyright} 2024 Elsevier Inc.",

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author = "Geping Qu and Siyuan Cai and Ying Qiao and Deng Wang and Shaokuan Gong and Danish Khan and Yu Wang and Kui Jiang and Qian Chen and Letian Zhang and Yang-Gang Wang and Xihan Chen and Jen, {Alex K.-Y} and Zong-Xiang Xu",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier Inc.",

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doi = "10.1016/j.joule.2024.05.005",

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T1 - Conjugated linker-boosted self-assembled monolayer molecule for inverted perovskite solar cells

AU - Qu, Geping

AU - Cai, Siyuan

AU - Qiao, Ying

AU - Wang, Deng

AU - Gong, Shaokuan

AU - Khan, Danish

AU - Wang, Yu

AU - Jiang, Kui

AU - Chen, Qian

AU - Zhang, Letian

AU - Wang, Yang-Gang

AU - Chen, Xihan

AU - Jen, Alex K.-Y

AU - Xu, Zong-Xiang

PY - 2024/7/17

Y1 - 2024/7/17

N2 - This study builds upon the success achieved from commercial self-assembled monolayers (SAMs), such as Me-4PACz, by replacing its flexible butyl linker with a conjugated phenylene ring to form a SAM molecule, Me-PhpPACz, for inverted perovskite solar cells (PSCs). The Me-PhpPACz-derived PSCs exhibited an unprecedented power conversion efficiency of 26.17% with an extremely high fill factor of 86.79% and exceptional long-term stability. The result from ultrafast spectroscopy shows that phenylene-linked SAMs not only modulate the work function of indium tin oxide electrode but also facilitate charge carrier extraction and transport. Our detailed study helps deepen our understanding of the delicate relationship between SAM molecular design and PSC performance, paving the way for further enhancing the efficiency and stability of PSCs. © 2024 Elsevier Inc.

AB - This study builds upon the success achieved from commercial self-assembled monolayers (SAMs), such as Me-4PACz, by replacing its flexible butyl linker with a conjugated phenylene ring to form a SAM molecule, Me-PhpPACz, for inverted perovskite solar cells (PSCs). The Me-PhpPACz-derived PSCs exhibited an unprecedented power conversion efficiency of 26.17% with an extremely high fill factor of 86.79% and exceptional long-term stability. The result from ultrafast spectroscopy shows that phenylene-linked SAMs not only modulate the work function of indium tin oxide electrode but also facilitate charge carrier extraction and transport. Our detailed study helps deepen our understanding of the delicate relationship between SAM molecular design and PSC performance, paving the way for further enhancing the efficiency and stability of PSCs. © 2024 Elsevier Inc.

KW - conjugated linker

KW - dipole moment

KW - hole-selected layer

KW - inverted perovskite solar cell

KW - molecular alignment

KW - self-assembled monolayer

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ER -

Conjugated linker-boosted self-assembled monolayer molecule for inverted perovskite solar cells

Abstract

Funding

Research Keywords

RGC Funding Information

UN SDGs

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GRF: Molecular Engineering of 1D Hybrid Perovskites for Improving the Performance and Stability of Metal Halide Perovskite Solar Cells

ITF: Development of Efficient and Stable Perovskite Solar Cell with Safe-to-Use

ITF: Using High-Throughput Optical Model to Design High Performance Thin Film Structures for Next-Generation Glass Materials and Products

Cite this

Conjugated linker-boosted self-assembled monolayer molecule for inverted perovskite solar cells

Abstract

Funding

Research Keywords

RGC Funding Information

UN SDGs

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

GRF: Molecular Engineering of 1D Hybrid Perovskites for Improving the Performance and Stability of Metal Halide Perovskite Solar Cells

ITF: Development of Efficient and Stable Perovskite Solar Cell with Safe-to-Use

ITF: Using High-Throughput Optical Model to Design High Performance Thin Film Structures for Next-Generation Glass Materials and Products

Cite this