Tailored multifunctional hydrazine derivatives for efficient printable hole-conductive-free mesoscopic perovskite solar cells via enhancing defect passivation  

作　　者：Minghao Xia Ziwei Zheng Yanjie Cheng Chaoyang Wang Zhaozhen Cui Guodong Zhang Jinwei Gonga Anyi Mei Hongwei Han 

机构地区：[1]Michael Grätzel Center for Mesoscopic Solar Cells,Wuhan National Laboratory for Optoelectronics,Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China [2]Key Laboratory of Flexible Electronics(KLoFE)&Institute of Advanced Materials(IAM),School of Flexible Electronics(Future Technologies),Nanjing Tech University(NanjingTech),Nanjing 211816,Jiangsu,China

出　　处：《Journal of Energy Chemistry》2024年第8期357-363,I0008,共8页能源化学（英文版）

基　　金：financial support from the National Natural Science Foundation of China(Grant Nos.52172198,51902117,91733301)。

摘　　要：The low-cost and easy large-scale fabrication advantages of printable mesoscopic perovskite solar cells(p-MPSCs)are overshadowed by their limited photovoltaic conversion efficiency(PCE).Here,we introduce the hydrazide derivative of 4-Hydroxybenzoylhydrazine(4-HBH)to improve the PCE of p-MPSCs by inducing enhanced defect passivation.Both carbonyl and hydrazine groups in hydrazide groups present strong interaction with perovskite.The hydroxyl group,as an electron donor group,increases the electron cloud density of the hydrazide group in 4-HBH under the conjugation of the benzene ring,and thus enhances its interaction with perovskite.Additionally,the hydroxy group itself interacts with perovskite and passivates defects synergistically.The hydrazine agents can also reduce I2and suppress the loss of iodine in perovskite films,which inhibits the formation of iodine-related defects.Consequently,p-MPSCs with 4-HBH achieve a high PCE of 19.21%,and present well improved stability.

关 键 词：Printable mesoscopic perovskite solar cells Multifunctional hydrazine derivatives Cooperative coordination Conjugation redox activity 

分 类 号：TM914.4[电气工程—电力电子与电力传动]