Conjugated Bisphosphonic Acid Self-Assembled Monolayers for Efficient and Stable Inverted Perovskite Solar Cells

Yuan, Songyang; Ge, Chengda; Zhang, Tianyi; Su, Gengyang; Qiu, Quanrun; Ren, Guanhua; Ke, Lingyi; Du, Gengxin; Zou, Guangruixing; Zhang, Nan; Liu, Hui; Li, Qingduan; Jia, Tao; Cai, Yue‐Peng; Liu, Shengjian; Yip, Hin‐Lap

doi:10.1021/jacs.5c05801

articleJournal of the American Chemical SocietyJun 30, 2025HYBRID OA

Conjugated Bisphosphonic Acid Self-Assembled Monolayers for Efficient and Stable Inverted Perovskite Solar Cells

SYSongyang Yuan CGChengda Ge TZTianyi Zhang GSGengyang Su QQQuanrun Qiu

City University of Hong Kong · South China Normal University · +2 more institutions

PubMed

Indexed incrossrefpubmed

Abstract

Chemically modifiable self-assembled monolayer (SAM)-based hole transport layers are crucial for achieving high-efficiency inverted perovskite solar cells (PSCs). However, designing molecular structures that simultaneously ensure strong binding affinity, interfacial stability, and optimized energy level alignment remains challenging. Here, we introduce TPA2P ((2-(4-(diphenylamino)phenyl)-1-phosphonovinyl)phosphonic acid), a novel SAM material featuring a conjugated bisphosphonic acid anchoring group. This dual phosphonic acid configuration enhances substrate binding on indium tin oxide (ITO), improves SAM uniformity, and increases interfacial stability. Furthermore, the ethylene bridge facilitates efficient…

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52

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FWCI: 29.82
Percentile: 100%
References: 34

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16

Topics & keywords

Topics

Keywords

Triphenylamine
Chemistry
Perovskite (structure)
Monolayer
Intramolecular force
Conjugated system
Self-assembled monolayer
Energy conversion efficiency

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