文献类型：期刊文献

英文题名：Anchorable Polymers Enabling Ultra-Thin and Robust Hole-Transporting Layers for High-Efficiency Inverted Perovskite Solar Cells

作者：Zhan, Liqing[1,2];Zhang, Shuo[1,2,3];Li, Zhihao[5];Li, Wenzhuo[6];Zhang, Huidong[1,2];He, Jingwen[1,2];Ji, Xiaoyu[1,2];Liu, Shuaijun[1,2];Yu, Furong[1,2];Wang, Songran[1,2];Ning, Zhijun[6];Li, Zhen[5];Stolterfoht, Martin[7];Han, Liyuan[8];Zhu, Wei-Hong[1,2,3];Xu, Yisheng[2,4];Wu, Yongzhen[1,3]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Key Lab Adv Mat,Shanghai Key Lab Funct Mat Chem,Fe, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, Joint Int Res Lab Precis Chem & Mol Engn,Shanghai, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, Ctr Photosensit Chem Engn, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Green Chem Engn & Ind Catalysis, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[5]Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian, Peoples R China;[6]ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China;[7]Chinese Univ Hong Kong, Elect Engn Dept, Hong Kong, Peoples R China;[8]Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai, Peoples R China

年份：2025

卷号：64

期号：12

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20250217658658);WOS:【SCI-EXPANDED(收录号:WOS:001391830500001)】；

基金：The work was supported by the National Natural Science Foundation of China (22425502, T2488302, 22179037), Shanghai PilotProgram for Basic Research (22TQ1400100-1), Shanghai Municipal Science and Technology Major Project (24DX1400200), Program of Introducing Talents of Discipline to Universities (B16017), Shanghai Science and Technology Innovation Action Plan (22501100500), Fundamental Research Funds for the Central Universities, Postdoctoral Fellowship Program of CPSF under BX20240117. We thank Mrs. Jiajia Fu from Shiyanjia Lab (www.shiyan-jia.com) for the XPS measurements. We thank the Research Center of Analysis and Test of East China University of Science and Technology (ECUST).

语种：英文

外文关键词：Inverted Perovskite Solar Cells; Polymeric Hole-Transporting Materials; Ultra-Thin Films; Interfacial Anchoring

摘要：Currently, the development of polymeric hole-transporting materials (HTMs) lags behind that of small-molecule HTMs in inverted perovskite solar cells (PSCs). A critical challenge is that conventional polymeric HTMs are incapable of forming ultra-thin and conformal coatings like self-assembly monolayers (SAMs), especially for substrates with rough surface morphology. Herein, we address this challenge by designing anchorable polymeric HTMs (CP1 to CP5). Specifically, coordinative pyridyl groups are introduced as side-chains on poly-triarylamine (PTAA) backbone with varied contents by copolymerization method, resulting in chemical interactions between polymeric HTMs and substrates. The strong interaction allows them to be processed into ultra-thin, uniform, and robust hole-transporting layers through employing low-concentration solutions (0.1 mg mL-1, vs. 2.0-5.0 mg mL-1 for conventional PTAA), greatly decreasing charge transport losses. Moreover, upon systematically tuning the pyridyl substitution ratio, the energy levels, surface wetting, solution processability, and defect passivation capability of such anchorable HTMs are simultaneously optimized. Based on the optimal CP4, we achieved highly efficient inverted PSCs with power conversion efficiencies (PCEs) up to 26.21 %, which is on par with state-of-the-art SAM-based inverted PSCs. Furthermore, these devices exhibit enhanced stabilities under repeated current-voltage scans and reverse bias ageing compared with SAM-based devices.