文献类型：期刊文献

英文题名：Synergistic Coassembly of Highly Wettable and Uniform Hole-Extraction Monolayers for Scaling-up Perovskite Solar Cells

作者：Li, Erpeng[1];Bi, Enbing[2];Wu, Yongzhen[1];Zhang, Weiwei[1];Li, Linchang[1];Chen, Han[2];Han, Liyuan[2];Tian, He[1];Zhu, Wei-Hong[1]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat & Feringa Nobel Prize Scientist, Joint Res Ctr, Shanghai Key Lab Funct Mat Chem,Sch Chem & Mol En, Shanghai 200237, Peoples R China;[2]Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, 800 Dong Chuan Rd, Shanghai 200240, Peoples R China

年份：2020

卷号：30

期号：7

外文期刊名：ADVANCED FUNCTIONAL MATERIALS

收录：;EI(收录号：20195207901223);WOS:【SCI-EXPANDED(收录号:WOS:000503157100001)】；

基金：This work was supported by the National Natural Science Foundation of China (21822504, 21706070, 21421004, and 21636002), Shanghai Municipal Science and Technology Major Project (2018SHZDZX03), Programmer of Introducing Talents of Discipline to Universities (B16017), Shanghai Science and Technology Committee (17ZR1407400 and 17520750100), China Association of Science and Technology (2017QNRC001), Eastern Scholar (TP2016018), and Fundamental Research Funds for the Central Universities (WJ1714007).

语种：英文

外文关键词：anchoring-based coassembly strategy; hole-extraction monolayer; modules; perovskite solar cells; scaling-up

摘要：All organic charge-transporting layer (CTL)-featured perovskite solar cells (PSCs) exhibit distinct advantages, but their scaling-up remains a great challenge because the organic CTLs underneath the perovskite are too thin to achieve large-area homogeneous layers by spin-coating, and their hydrophobic nature further hinders the solution-based fabrication of perovskite layer. Here, an unprecedented anchoring-based coassembly (ACA) strategy is reported that involves a synergistic coadsorption of a hydrophilic ammonium salt CA-Br with hole-transporting triphenylamine derivatives to acquire scalable and wettable organic hole-extraction monolayers for p-i-n structured PSCs. The ACA route not only enables ultrathin organic CTLs with high uniformity but also eliminates the nonwetting problem to facilitate large-area perovskite films with 100% coverage. Moreover, incorporation of CA-Br in the ACA strategy can distinctly guarantee a high quality of electronic connection via the cations' vacancy passivation. Consequently, a high power-conversion-efficiency (PCE) of 17.49% is achieved for p-i-n structured PSCs (1.02 cm(2)), and a module with an aperture area of 36 cm(2) shows PCE of 12.67%, one of the best scaling-up results among all-organic CTL-based PSCs. This work demonstrates that the ACA strategy can be a promising route to large-area uniform interfacial layers as well as scaling-up of perovskite solar cells.