文献类型：期刊文献

英文题名：Formamidinium Lead Iodide-Based Inverted Perovskite Solar Cells with Efficiency over 25 % Enabled by An Amphiphilic Molecular Hole-Transporter

作者：Zhang, Huidong[1];Zhang, Shuo[1];Ji, Xiaoyu[1];He, Jingwen[1];Guo, Huanxin[1];Wang, Songran[1];Wu, Wenjun[1];Zhu, Wei-Hong[1];Wu, Yongzhen[1]

机构：[1]East China Univ Sci & Technol, Inst Fine Chem, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn,Key Lab Adv Mat & Joint Int Re, Shanghai 200237, Peoples R China

年份：2024

卷号：63

期号：16

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20241015705053);WOS:【SCI-EXPANDED(收录号:WOS:001179951000001)】；

基金：The work was supported by the National Natural Science Foundation of China (22179037), Shanghai pilotProgram for Basic Research (22TQ1400100-1), Shanghai Municipal Science and Technology Major Project (2018SHZDZX03, 21JC1401700), Program of Introducing Talents of Discipline to Universities (B16017), Fundamental Research Funds for the Central Universities. The authors thank the Research Center of Analysis and Test of East China University of Science and Technology (ECUST) and the Instrumental Analysis Center of Shanghai Jiao Tong University for performing various characterizations; Prof. Shuang Yang and Mr. Can Zou from ECUST for TPV and TPC measurements, Mrs. Mengjing Li from Shiyanjia Lab () for the XPS and UPS measurement. The authors also appreciate Prof. Xingyu Gao, Mr. Meirong Fu and Mr. Liujiang Zhang from the Shanghai Synchrotron Radiation Facility (SSRF) for GIWAXS characterization (BL14B1), Mr. Xianyuan Jiang from ShanghaiTech University for data analysis of GIWAXS raw patterns, and Mr. Yanbo Wang, Mr. Mengjiong Chen and Ms. Limin Sun from Shanghai Jiao Tong University for TOF-SIMS measurement.

语种：英文

外文关键词：Formamidinium lead iodide; Inverted perovskite solar cells; Hole-selective contact; Phenothiazine; Cyanovinyl phosphonic acid

摘要：Formamidinium lead iodide (FAPbI3) represents an optimal absorber material in perovskite solar cells (PSCs), while the application of FAPbI3 in inverted-structured PSCs has yet to be successful, mainly owing to its inferior film-forming on hydrophobic or defective hole-transporting substrates. Herein, we report a substantial improvement of FAPbI3-based inverted PSCs, which is realized by a multifunctional amphiphilic molecular hole-transporter, (2-(4-(10H-phenothiazin-10-yl)phenyl)-1-cyanovinyl)phosphonic acid (PTZ-CPA). The phenothiazine (PTZ) based PTZ-CPA, carrying a cyanovinyl phosphonic acid (CPA) group, forms a superwetting hole-selective underlayer that enables facile deposition of high-quality FAPbI3 thin films. Compared to a previously established carbazole-based hole-selective material (2-(3,6-dimethoxy-9H-carbazol-9-yl)ethyl)phosphonic acid (MeO-2PACz), the crystallinity of FAPbI3 is enhanced and the electronic defects are passivated by the PTZ-CPA more effectively, resulting in remarkable increases in photoluminescence quantum yield (four-fold) and Shockley-Read-Hall lifetime (eight-fold). Moreover, the PTZ-CPA shows a larger molecular dipole moment and improved energy level alignment with FAPbI3, benefiting the interfacial hole-collection. Consequently, FAPbI3-based inverted PSCs achieve an unprecedented efficiency of 25.35 % under simulated air mass 1.5 (AM1.5) sunlight. The PTZ-CPA based device shows commendable long-term stability, maintaining over 90 % of its initial efficiency after continuous operation at 40 degrees C for 2000 hours. A phenothiazine-based molecular hole-transporter (PTZ-CPA) carrying a cyanovinyl phosphonic acid group is developed for the formamidinium lead iodide (FAPbI3)-based inverted perovskite solar cells, resulting in the highest solar-to-electricity conversion efficiencies of 25.35 % under standard air mass 1.5 (AM1.5) sunlight. image