Achieving a high open-circuit voltage of 1.339 V in 1.77 eV wide-bandgap perovskite solar cells via self-assembled monolayers

Zongjin Yi; Wanhai Wang; Rui He; Jingwei Zhu; Wenbo Jiao; Yi Luo; Yuliang Xu; Yunfan Wang; Zixin Zeng; Kun Wei; Jinbao Zhang; Sai-Wing Tsang; Cong Chen; Weihua Tang; Dewei Zhao

doi:10.1039/d3ee02839a

Achieving a high open-circuit voltage of 1.339 V in 1.77 eV wide-bandgap perovskite solar cells via self-assembled monolayers

Zongjin Yi (Co-first Author)
, Wanhai Wang (Co-first Author)
, Rui He
, Jingwei Zhu
, Wenbo Jiao
, Yi Luo
, Yuliang Xu
, Yunfan Wang
, Zixin Zeng
, Kun Wei
, Jinbao Zhang
, Sai-Wing Tsang
, Cong Chen
, Weihua Tang^*
, Dewei Zhao^*

^*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

140 Citations (Scopus)

18 Downloads (CityUHK Scholars)

Abstract

Severe open-circuit voltage (V_OC) loss significantly hinders the performance improvement of wide-bandgap (WBG) perovskite solar cells (PSCs) and their application in perovskite-based tandem devices. Herein, we develop a novel self-assembled monolayer of (4-(5,9-dibromo-7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic acid (DCB-BPA) as the hole-selective layer for WBG PSCs with a 1.77 eV perovskite absorber. DCB-BPA facilitates the subsequent growth of WBG perovskite with improved buried-interface quality. Compared with that of poly(triarylamine) PTAA-based control devices, a substantially enhanced average V_OC from 1.18 V to 1.31 V of DCB-BPA-based devices has been realized due to reduced interfacial nonradiative recombination and enhanced energy level alignment. Our certified device delivers an impressive V_OC of up to 1.339 V and a power conversion efficiency (PCE) of 18.88%, corresponding to a very low V_OC loss of 431 mV (with respect to the bandgap). This enables us to fabricate efficient 4-terminal all-perovskite tandem solar cells with a PCE of 26.9% by combining with a 1.25 eV low-bandgap PSC, demonstrating the promising application of DCB-BPA in tandem devices. © The Royal Society of Chemistry 2024.

Original language	English
Pages (from-to)	202-209
Journal	Energy & Environmental Science
Volume	17
Issue number	1
Online published	10 Nov 2023
DOIs	https://doi.org/10.1039/d3ee02839a
Publication status	Published - 7 Jan 2024

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Publisher's Copyright Statement

COPYRIGHT TERMS OF DEPOSITED POSTPRINT FILE: This journal is © The Royal Society of Chemistry 2024. This is the accepted version of a paper published in Energy & Environmental Science. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination. Yi, Z., Wang, W., He, R., Zhu, J., Jiao, W., Luo, Y., Xu, Y., Wang, Y., Zeng, Z., Wei, K., Zhang, J., Tsang, S-W., Chen, C., Tang, W., & Zhao, D. (2024). Achieving a high open-circuit voltage of 1.339 V in 1.77 eV wide-bandgap perovskite solar cells via self-assembled monolayers. Energy & Environmental Science, 17(1), 202-209. https://doi.org/10.1039/d3ee02839a

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@article{96d9c51d2f704b9c9ecbcda247f32a4c,

title = "Achieving a high open-circuit voltage of 1.339 V in 1.77 eV wide-bandgap perovskite solar cells via self-assembled monolayers",

abstract = "Severe open-circuit voltage (VOC) loss significantly hinders the performance improvement of wide-bandgap (WBG) perovskite solar cells (PSCs) and their application in perovskite-based tandem devices. Herein, we develop a novel self-assembled monolayer of (4-(5,9-dibromo-7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic acid (DCB-BPA) as the hole-selective layer for WBG PSCs with a 1.77 eV perovskite absorber. DCB-BPA facilitates the subsequent growth of WBG perovskite with improved buried-interface quality. Compared with that of poly(triarylamine) PTAA-based control devices, a substantially enhanced average VOC from 1.18 V to 1.31 V of DCB-BPA-based devices has been realized due to reduced interfacial nonradiative recombination and enhanced energy level alignment. Our certified device delivers an impressive VOC of up to 1.339 V and a power conversion efficiency (PCE) of 18.88\%, corresponding to a very low VOC loss of 431 mV (with respect to the bandgap). This enables us to fabricate efficient 4-terminal all-perovskite tandem solar cells with a PCE of 26.9\% by combining with a 1.25 eV low-bandgap PSC, demonstrating the promising application of DCB-BPA in tandem devices. {\textcopyright} The Royal Society of Chemistry 2024.",

author = "Zongjin Yi and Wanhai Wang and Rui He and Jingwei Zhu and Wenbo Jiao and Yi Luo and Yuliang Xu and Yunfan Wang and Zixin Zeng and Kun Wei and Jinbao Zhang and Sai-Wing Tsang and Cong Chen and Weihua Tang and Dewei Zhao",

year = "2024",

month = jan,

day = "7",

doi = "10.1039/d3ee02839a",

language = "English",

volume = "17",

pages = "202--209",

journal = "Energy \& Environmental Science",

issn = "1754-5692",

publisher = "Royal Society of Chemistry",

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Achieving a high open-circuit voltage of 1.339 V in 1.77 eV wide-bandgap perovskite solar cells via self-assembled monolayers. / Yi, Zongjin (Co-first Author); Wang, Wanhai (Co-first Author); He, Rui et al.
In: Energy & Environmental Science, Vol. 17, No. 1, 07.01.2024, p. 202-209.

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

TY - JOUR

T1 - Achieving a high open-circuit voltage of 1.339 V in 1.77 eV wide-bandgap perovskite solar cells via self-assembled monolayers

AU - Yi, Zongjin

AU - Wang, Wanhai

AU - He, Rui

AU - Zhu, Jingwei

AU - Jiao, Wenbo

AU - Luo, Yi

AU - Xu, Yuliang

AU - Wang, Yunfan

AU - Zeng, Zixin

AU - Wei, Kun

AU - Zhang, Jinbao

AU - Tsang, Sai-Wing

AU - Chen, Cong

AU - Tang, Weihua

AU - Zhao, Dewei

PY - 2024/1/7

Y1 - 2024/1/7

N2 - Severe open-circuit voltage (VOC) loss significantly hinders the performance improvement of wide-bandgap (WBG) perovskite solar cells (PSCs) and their application in perovskite-based tandem devices. Herein, we develop a novel self-assembled monolayer of (4-(5,9-dibromo-7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic acid (DCB-BPA) as the hole-selective layer for WBG PSCs with a 1.77 eV perovskite absorber. DCB-BPA facilitates the subsequent growth of WBG perovskite with improved buried-interface quality. Compared with that of poly(triarylamine) PTAA-based control devices, a substantially enhanced average VOC from 1.18 V to 1.31 V of DCB-BPA-based devices has been realized due to reduced interfacial nonradiative recombination and enhanced energy level alignment. Our certified device delivers an impressive VOC of up to 1.339 V and a power conversion efficiency (PCE) of 18.88%, corresponding to a very low VOC loss of 431 mV (with respect to the bandgap). This enables us to fabricate efficient 4-terminal all-perovskite tandem solar cells with a PCE of 26.9% by combining with a 1.25 eV low-bandgap PSC, demonstrating the promising application of DCB-BPA in tandem devices. © The Royal Society of Chemistry 2024.

AB - Severe open-circuit voltage (VOC) loss significantly hinders the performance improvement of wide-bandgap (WBG) perovskite solar cells (PSCs) and their application in perovskite-based tandem devices. Herein, we develop a novel self-assembled monolayer of (4-(5,9-dibromo-7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic acid (DCB-BPA) as the hole-selective layer for WBG PSCs with a 1.77 eV perovskite absorber. DCB-BPA facilitates the subsequent growth of WBG perovskite with improved buried-interface quality. Compared with that of poly(triarylamine) PTAA-based control devices, a substantially enhanced average VOC from 1.18 V to 1.31 V of DCB-BPA-based devices has been realized due to reduced interfacial nonradiative recombination and enhanced energy level alignment. Our certified device delivers an impressive VOC of up to 1.339 V and a power conversion efficiency (PCE) of 18.88%, corresponding to a very low VOC loss of 431 mV (with respect to the bandgap). This enables us to fabricate efficient 4-terminal all-perovskite tandem solar cells with a PCE of 26.9% by combining with a 1.25 eV low-bandgap PSC, demonstrating the promising application of DCB-BPA in tandem devices. © The Royal Society of Chemistry 2024.

UR - https://www.scopus.com/pages/publications/85178123261

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85178123261&origin=recordpage

U2 - 10.1039/d3ee02839a

DO - 10.1039/d3ee02839a

M3 - RGC 21 - Publication in refereed journal

SN - 1754-5692

VL - 17

SP - 202

EP - 209

JO - Energy & Environmental Science

JF - Energy & Environmental Science

IS - 1

ER -

Achieving a high open-circuit voltage of 1.339 V in 1.77 eV wide-bandgap perovskite solar cells via self-assembled monolayers

Abstract

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