文献类型：期刊文献

英文题名：Nano-capillary induced assemble of quantum dots on perovskite grain boundaries for efficient and stable perovskite solar cells

作者：Lin, Miaoyu[1];He, Jingjing[2];Liu, Xinyi[1];Li, Qing[1];Wei, Zhanpeng[1];Sun, Yuting[1];Leng, Xuesong[1];Chen, Mengjiong[1];Xia, Zhuhui[1];Peng, Yu[1];Niu, Qiang[2];Yang, Shuang[1];Hou, Yu[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Frontiers Sci Ctr Optogenet Tech Cell Met, Minist Educ,Shanghai Engn Res Ctr Hierarch Nanomat, Shanghai 200237, Peoples R China;[2]Inner Mongolia Erdos Elect Power & Met Grp Co Ltd, Natl Enterprise Technol Ctr, Ordos 016064, Inner Mongolia, Peoples R China

年份：2023

卷号：83

起止页码：595

外文期刊名：JOURNAL OF ENERGY CHEMISTRY

收录：;EI(收录号：20232414221054);WOS:【SCI-EXPANDED(收录号:WOS:001028924300001)】；

基金：This work was financially supported by the National Ten Thousand Talent Program for Young Top-notch Talent, the National Natural Science Fund for Excellent Young Scholars (52022030), the & nbsp;National Natural Science Foundation of China (51972111, 52203330), the Shanghai Pilot Program for Basic Research (22TQ1400100-5), the "Dawn" Program of Shanghai Education Commission (22SG28), the Shanghai Municipal Natural Science Foundation (22ZR1418000), the Science and Technology Innovation Plan of Shanghai Science and Technology Commission (22YF1410000), the Postdoctoral Research Foundation of China (2021M701190), the Fundamental Research Funds for the Central Universities (JKM01221621, JKM01221678), the Major Science and Technology Projects of Inner Mongolia Autonomous Region (2021ZD0042) and Shanghai Engineering Research Center of Hierarchical Nanomaterials (18DZ2252400).

语种：英文

外文关键词：Perovskite solar cells; Quantum dots; Capillarity; Grain boundary; Passivation

摘要：In recent years, perovskite solar cells (PSCs) have propelled into the limelight owing to rapid development of efficiency; however, the abundant defects at the perovskite grain boundaries result in unwanted energy loss and structural degradation. Here, the grain boundaries of perovskite polycrystalline films have been found to act as nanocapillaries for capturing perovskite quantum dots (PQDs), which enable the conformal assemble of PQDs at the top interspace between perovskite grains. The existence of PQDs passivated the surface defects, optimized the interfacial band alignments, and ultimately improved the power conversion efficiency from 19.27% to 22.47% in inverted PSCs. Our findings open up the possibility of selective assembly and structural modulation of the perovskite nanostructures towards efficient and stable PSCs.& COPY; 2023 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.