A Pyrrole Modified 3,4‐Propylenedioxythiophene Conjugated Polymer as Hole Transport Layer for Efficient and Stable Perovskite Solar Cells

Tang, Yuanhao; Ma, Ke; Shao, Wenhao; Lee, Yoon Ho; Abtahi, Ashkan; Sun, Jiaonan; Yang, Hanjun; Coffey, Aidan H.; Atapattu, Harindi; Ahmed, Mustafa; Hu, Qixuan; Xu, Wenzhan; Dani, Raunak; Wang, Limei; Zhu, Chenhui; Graham, Kenneth R.; Mei, Jianguo; Dou, Letian

doi:10.1002/smll.202408440

Title: A Pyrrole Modified 3,4‐Propylenedioxythiophene Conjugated Polymer as Hole Transport Layer for Efficient and Stable Perovskite Solar Cells

Journal Article · 28 October 2024 · Small

DOI: https://doi.org/10.1002/smll.202408440 · OSTI ID:2475215

^[1]; Ma, Ke ^[2]; Shao, Wenhao ^[1]; Lee, Yoon Ho ^[3]; Abtahi, Ashkan ^[4]; Sun, Jiaonan ^[1]; Yang, Hanjun ^[3]; Coffey, Aidan H. ^[5]; Atapattu, Harindi ^[6]; Ahmed, Mustafa ^[4]; Hu, Qixuan ^[1]; Xu, Wenzhan ^[1]; Dani, Raunak ^[1]; Wang, Limei ^[1]; Zhu, Chenhui ^[5]; Graham, Kenneth R. ^[6];

^[4];

^[7]

Davidson School of Chemical Engineering Purdue University West Lafayette IN 47907 USA
Davidson School of Chemical Engineering Purdue University West Lafayette IN 47907 USA, Global Institute of Future Technology Shanghai Jiao Tong University Shanghai 200240 China
Davidson School of Chemical Engineering Purdue University West Lafayette IN 47907 USA, Department of Chemistry Purdue University West Lafayette IN 47907 USA
Department of Chemistry Purdue University West Lafayette IN 47907 USA
Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
Department of Chemistry University of Kentucky Lexington KY 40506 USA
Davidson School of Chemical Engineering Purdue University West Lafayette IN 47907 USA, Department of Chemistry Purdue University West Lafayette IN 47907 USA, Birck Nanotechnology Center Purdue University West Lafayette IN 47907 USA

Abstract Despite the outstanding electric properties and cost‐effectiveness of poly(3,4‐ethylenedioxythiophene) (PEDOT) and its derivatives, their performance as hole transport layer (HTL) materials in conventional perovskite solar cells (PSCs) has lagged behind that of widely used spirobifluorene‐based molecules or poly(triaryl amine). This gap is mainly from their poor solubility and energy alignment mismatch. In this work, the design and synthesis of a pyrrole‐modified HTL (PPr) based on 3,4‐propylenedioxythiophene (ProDOT) are presented for efficient and stable PSCs. As a result of the superior defects passivation ability, excellent contact with perovskite, enhanced hole extraction, and high hydrophobicity, the unencapsulated PPr‐based PSCs showed the peak PCE of 21.49% and outstanding moisture stability (over 4000 h). This work highlights the potential application of ProDOT‐based materials as HTL for PSCs and underscores the importance of the rational design of PEDOT and its derivatives.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: NONE; EE0009519

OSTI ID:: 2475215

Journal Information:: Small, Journal Name: Small Journal Issue: 1 Vol. 21; ISSN 1613-6810

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: Germany

Language:: English

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