文献类型：期刊文献

英文题名：Efficient Passivation of Hybrid Perovskite Solar Cells Using Organic Dyes with -COOH Functional Group

作者：Li, Xing[1,2];Chen, Chun-Chao[3];Cai, Molang[1];Hua, Xin[2];Xie, Fengxian[1];Liu, Xiao[1];Hua, Jianli[2];Long, Yi-Tao[2];Tian, He[2];Han, Liyuan[1]

机构：[1]Natl Inst Mat Sci, Res Network & Facil Serv Div, Tsukuba, Ibaraki 3050047, Japan;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Joint Int Res Lab Precis Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, 800 Dong Chuan Rd, Shanghai 200240, Peoples R China

年份：2018

卷号：8

期号：20

外文期刊名：ADVANCED ENERGY MATERIALS

收录：;EI(收录号：20181705056196);WOS:【SCI-EXPANDED(收录号:WOS:000438706700030)】；

基金：This work was supported by the New Energy and Industrial Technology Development Organization (NEDO, Japan); Science Fund for Creative Research Groups (21421004); NSFC/China (21772040, 21372082,2157062,11574199, and 11674219); the Fundamental Research Funds for the Central Universities (222201717003) and Programme of Introducing Talents of Discipline to Universities (B16017). X.L. would like to thank the funding of the visiting program, which is supported by China Scholarship Council (CSC).

语种：英文

外文关键词：-COOH group; organic dyes; passivation; perovskite solar cells

摘要：Organic-inorganic halide perovskites are efficient absorbers for solar cells. Nevertheless, the trap states at the surfaces and grain boundaries are a detrimental factor compromising the device performance. Here, an organic dye (AQ310) is employed as passivator to reduce the trap states of the perovskites and promote better stability. The results demonstrate that the trap states of perovskite are minimized by the presence of AQ310's COOH group and the formation of coordination with under-coordinated Pb2+ ions. The resulting carrier recombination time is prolonged and verified by the photoluminescence and open-circuit voltage decay measurements. Consequently, the best average power conversion efficiency (PCE) of 19.43% is achieved for the perovskite solar cell (PSC) with AQ310 passivation, as compared with a low average PCE of 17.98% for the PSC without AQ310 passivation.