Co-assembled Monolayers as Hole-Selective Contact for High-Performance Inverted Perovskite Solar Cells with Optimized Recombination Loss and Long-Term Stability

Xiang DENG; Feng QI; Fengzhu LI; Shengfan WU; Francis R. LIN; Zhuomin ZHANG; Zhiqiang GUAN; Zhengbao YANG; Chun Sing LEE; Alex K.Y. JEN

doi:10.1002/anie.202203088

Co-assembled Monolayers as Hole-Selective Contact for High-Performance Inverted Perovskite Solar Cells with Optimized Recombination Loss and Long-Term Stability

Xiang DENG, Feng QI, Fengzhu LI, Shengfan WU, Francis R. LIN^*, Zhuomin ZHANG, Zhiqiang GUAN, Zhengbao YANG, Chun Sing LEE, Alex K.Y. JEN^*

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

125 Citations (Scopus)

Abstract

Self-assembled monolayers (SAMs) have been widely employed as an effective way to modify interfaces of electronic/optoelectronic devices. To achieve a good control of the growth and molecular functionality of SAMs, we develop a co-assembled monolayer (co-SAM) for obtaining efficient hole selection and suppressed recombination at the hole-selective interface in inverted perovskite solar cells (PSCs). By engineering the position of methoxy substituents, an aligned energy level and favorable dipole moment can be obtained in our newly synthesized SAM, ((2,7-dimethoxy-9H-carbazol-9-yl) methyl) phosphonic acid (DC-PA). An alkyl ammonium containing SAM is co-assembled to further optimize the surface functionalization and interaction with perovskite layer on top. A champion device with an excellent power conversion efficiency (PCE) of 23.59 % and improved device stability are achieved. This work demonstrates the advantage of using co-SAM in improving performance and stability of PSCs.

Original language	English
Article number	e202203088
Journal	Angewandte Chemie (International Edition)
Volume	61
Issue number	30
Early online date	12 May 2022
DOIs	https://doi.org/10.1002/anie.202203088
Publication status	Published - 25 Jul 2022
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2022 Wiley-VCH GmbH.

Funding

A.K.Y.J. thanks the sponsorship of the Lee Shau‐Kee Chair Professor (Materials Science), and the support from the APRC Grant of the City University of Hong Kong (9380086), Innovation and Technology Fund (GHP/018/20SZ), the GRF grant (11307621) from the Research Grants Council of Hong Kong, Guangdong Major Project of Basic and Applied Basic Research (2019B030302007), Guangdong‐Hong Kong‐Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials (2019B121205002).

Keywords

Hole Selective Layer
Interfaces
Perovskites
Self-Assembled Monolayer
Solar Cells

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10.1002/anie.202203088

Cite this

DENG, X., QI, F., LI, F., WU, S., LIN, F. R., ZHANG, Z., GUAN, Z., YANG, Z., LEE, C. S., & JEN, A. K. Y. (2022). Co-assembled Monolayers as Hole-Selective Contact for High-Performance Inverted Perovskite Solar Cells with Optimized Recombination Loss and Long-Term Stability. Angewandte Chemie (International Edition), 61(30), Article e202203088. https://doi.org/10.1002/anie.202203088

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abstract = "Self-assembled monolayers (SAMs) have been widely employed as an effective way to modify interfaces of electronic/optoelectronic devices. To achieve a good control of the growth and molecular functionality of SAMs, we develop a co-assembled monolayer (co-SAM) for obtaining efficient hole selection and suppressed recombination at the hole-selective interface in inverted perovskite solar cells (PSCs). By engineering the position of methoxy substituents, an aligned energy level and favorable dipole moment can be obtained in our newly synthesized SAM, ((2,7-dimethoxy-9H-carbazol-9-yl) methyl) phosphonic acid (DC-PA). An alkyl ammonium containing SAM is co-assembled to further optimize the surface functionalization and interaction with perovskite layer on top. A champion device with an excellent power conversion efficiency (PCE) of 23.59 % and improved device stability are achieved. This work demonstrates the advantage of using co-SAM in improving performance and stability of PSCs.",

keywords = "Hole Selective Layer, Interfaces, Perovskites, Self-Assembled Monolayer, Solar Cells",

author = "Xiang DENG and Feng QI and Fengzhu LI and Shengfan WU and LIN, {Francis R.} and Zhuomin ZHANG and Zhiqiang GUAN and Zhengbao YANG and LEE, {Chun Sing} and JEN, {Alex K.Y.}",

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doi = "10.1002/anie.202203088",

language = "English",

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Co-assembled Monolayers as Hole-Selective Contact for High-Performance Inverted Perovskite Solar Cells with Optimized Recombination Loss and Long-Term Stability. / DENG, Xiang; QI, Feng; LI, Fengzhu et al.
In: Angewandte Chemie (International Edition), Vol. 61, No. 30, e202203088, 25.07.2022.

Research output: Journal Publications › Journal Article (refereed) › peer-review

TY - JOUR

T1 - Co-assembled Monolayers as Hole-Selective Contact for High-Performance Inverted Perovskite Solar Cells with Optimized Recombination Loss and Long-Term Stability

AU - DENG, Xiang

AU - QI, Feng

AU - LI, Fengzhu

AU - WU, Shengfan

AU - LIN, Francis R.

AU - ZHANG, Zhuomin

AU - GUAN, Zhiqiang

AU - YANG, Zhengbao

AU - LEE, Chun Sing

AU - JEN, Alex K.Y.

PY - 2022/7/25

Y1 - 2022/7/25

N2 - Self-assembled monolayers (SAMs) have been widely employed as an effective way to modify interfaces of electronic/optoelectronic devices. To achieve a good control of the growth and molecular functionality of SAMs, we develop a co-assembled monolayer (co-SAM) for obtaining efficient hole selection and suppressed recombination at the hole-selective interface in inverted perovskite solar cells (PSCs). By engineering the position of methoxy substituents, an aligned energy level and favorable dipole moment can be obtained in our newly synthesized SAM, ((2,7-dimethoxy-9H-carbazol-9-yl) methyl) phosphonic acid (DC-PA). An alkyl ammonium containing SAM is co-assembled to further optimize the surface functionalization and interaction with perovskite layer on top. A champion device with an excellent power conversion efficiency (PCE) of 23.59 % and improved device stability are achieved. This work demonstrates the advantage of using co-SAM in improving performance and stability of PSCs.

AB - Self-assembled monolayers (SAMs) have been widely employed as an effective way to modify interfaces of electronic/optoelectronic devices. To achieve a good control of the growth and molecular functionality of SAMs, we develop a co-assembled monolayer (co-SAM) for obtaining efficient hole selection and suppressed recombination at the hole-selective interface in inverted perovskite solar cells (PSCs). By engineering the position of methoxy substituents, an aligned energy level and favorable dipole moment can be obtained in our newly synthesized SAM, ((2,7-dimethoxy-9H-carbazol-9-yl) methyl) phosphonic acid (DC-PA). An alkyl ammonium containing SAM is co-assembled to further optimize the surface functionalization and interaction with perovskite layer on top. A champion device with an excellent power conversion efficiency (PCE) of 23.59 % and improved device stability are achieved. This work demonstrates the advantage of using co-SAM in improving performance and stability of PSCs.

KW - Hole Selective Layer

KW - Interfaces

KW - Perovskites

KW - Self-Assembled Monolayer

KW - Solar Cells

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DO - 10.1002/anie.202203088

M3 - Journal Article (refereed)

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JO - Angewandte Chemie (International Edition)

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Co-assembled Monolayers as Hole-Selective Contact for High-Performance Inverted Perovskite Solar Cells with Optimized Recombination Loss and Long-Term Stability

Abstract

Bibliographical note

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Keywords

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