文献类型：期刊文献

英文题名：Synthesis of Highly-Oriented Black CsPbI3 Microstructures for High-Performance Solar Cells

作者：Ye, Tao[1,3];Pan, Lu[1];Yang, Yijun[1];Liang, Qifeng[4];Lu, Yue[2];Sui, Manling[2];Golberg, Dmitri[5,6];Wang, Xi[1]

机构：[1]Beijing Jiaotong Univ, Sch Sci, Dept Phys, Minist Educ,Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China;[2]Bening Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China;[3]Chem & Chem Engn Guangdong Lab, Shantou 515031, Peoples R China;[4]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China;[5]Queensland Univ Technol, Ctr Mat Sci, Sch Chem & Phys, Sci & Engn Fac, Brisbane, Qld 4000, Australia;[6]Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton MANA, Tsukuba, Ibaraki 3050044, Japan

年份：2020

卷号：32

期号：7

起止页码：3235

外文期刊名：CHEMISTRY OF MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000526394000052)、、WOS

基金：This work was supported financially by "the Fundamental Research Funds for the Central Universities" (Grant No. 2018JBZ107). This work was also supported financially by the National Natural Science Foundation of China (Grant Nos. 91961125, 11704015), "Key Program for International S&T Cooperation Projects of China" from the Ministry of Science and Technology of China (Grant Nos. 2018YFE0124600, 2016YFB0700700), and the Chemistry and Chemical Engineering Guangdong Laboratory (Grant No. 1932004). The authors also appreciate the support from the "Excellent One Hundred" project of Beijing Jiaotong University. D.G. is grateful to the Australian Research Council (ARC) for granting a Laureate Fellowship (Project No. FL160100089) and QUT Grant 323000-0355/51. We thank the people at beamline 1W1B and 4B7B at the Beijing Synchrotron Radiation Facility (BSRF) and beamline BL14W1 at the Shanghai Synchrotron Radiation Facility (SSRF). The authors thank V. Chellappan from the Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR) Singapore for their help in this study.

语种：英文

外文摘要：Synthesis of a thin layer of perovskite with less pinholes and defects is vital for the construction of a high-performance perovskite solar cell (PSC). We report on an oriented attachment strategy to fabricate a black phase CsPbI3 highly oriented quasi-single-crystalline microstructure film for constructing a mesoporous PSC device with enhanced power conversion efficiency, from 13.4% to 16.0%. The theoretical calculations and detailed in/ex situ characterizations demonstrate that the oriented attachment is driven by the predominant adsorption of dimethyl sulfoxide (DMSO) on the {212} facets of the yellow phase delta-CsPbI3 crystals which initially form a relatively oriented structure followed by phase transition to alpha-CsPbI3 crystals and merging into a large highly oriented quasi-single-crystalline microstructure film with {200} planes exposed under annealing. Our work demonstrates that the oriented attachment strategy enables the formation of highly oriented quasi-single-crystalline perovskite microstructure films which are essential for realizing high-efficiency and stable thin film PSCs.