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In Situ Monitoring of Thermal Degradation of CH3NH3PbI3 Films by Spectroscopic Ellipsometry

文献类型：期刊论文

作者Wang, Xiangqi1; Gong, Junbo1; Shan, Xueyan1; Zhang, Min1; Xu, Zilong1; Dai, Rucheng2; Wang, Zhongping2; Wang, Shimao4,5; Fang, Xiaodong3,4,5; Zhang, Zengming2,6
刊名JOURNAL OF PHYSICAL CHEMISTRY C
出版日期2019-01-17
卷号123期号:2页码:1362-1369
ISSN号1932-7447
DOI10.1021/acs.jpcc.8b12275
通讯作者Zhang, Zengming(zzm@ustc.edu.cn)
英文摘要During the last few years, the organic-inorganic hybrid methylammonium lead halide perovskite, CH3NH3PbX3 (MAPbX(3), X = I-, Cl-, BC), has received great interest in the field of photovoltaics. Relevant researches develop rapidly due to the excellent properties of MAPbI(3), such as high charge mobility, suitable band gap, and long carrier diffusion length. However, the instability of MAPbI(3) has been a key issue hindering practical application. Here, we present in situ spectroscopic ellipsometry measurement to monitor the thermal degradation process of MAPbI(3). The dynamic evolution of dielectric functions of the as-prepared MAPbI(3) films through degradation is extracted by an effective medium approximation model fitting the ellipsometry spectrum. The content proportion of MAPbI(3) and PbI2 is also obtained from the modeling results. The thickness of the film decreases in two steps corresponding to the degradation and melting-recrystallization process. The current work shows that ellipsometry provides a potentially fast and non-damage tool to monitor the degradation process and to determine the degree of degradation for MAPbI(3) perovskite films. Our work exhibits the first in situ monitoring of the optical properties through the degradation process of MAPbI(3) films, which can be consulted for further testing of the degree of degradation for MAPbI(3) solar cells and improving the stability of MAPbI(3).
WOS关键词PEROVSKITE SOLAR-CELLS ; OPTICAL-PROPERTIES ; HALIDE PEROVSKITE ; THIN-FILMS ; AB-INITIO ; EFFICIENT ; TEMPERATURE ; TRIHALIDE ; CONSTANTS ; DYNAMICS
资助项目Science Challenge Project[TZ2016001] ; National Natural Science Foundation of China[51677175] ; National Natural Science Foundation of China[11304300] ; National Natural Science Foundation of China[11674324]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
语种英语
WOS记录号WOS:000456350600039
出版者AMER CHEMICAL SOC
资助机构Science Challenge Project ; Science Challenge Project ; Science Challenge Project ; Science Challenge Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Challenge Project ; Science Challenge Project ; Science Challenge Project ; Science Challenge Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Challenge Project ; Science Challenge Project ; Science Challenge Project ; Science Challenge Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Challenge Project ; Science Challenge Project ; Science Challenge Project ; Science Challenge Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/41386]  
专题合肥物质科学研究院_中科院安徽光学精密机械研究所
通讯作者Zhang, Zengming
作者单位1.Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China
2.Univ Sci & Technol China, Ctr Phys Expt, Hefei 230026, Anhui, Peoples R China
3.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Anhui, Peoples R China
4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Anhui Prov Key Lab Photon Devices & Mat, Hefei 230031, Anhui, Peoples R China
5.Chinese Acad Sci, Key Lab Novel Thin Film Solar Cells, Hefei 230031, Anhui, Peoples R China
6.Univ Sci & Technol China, Chinese Acad Sci, Sch Phys Sci, Key Lab Strongly Coupled Quantum Matter Phys, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xiangqi,Gong, Junbo,Shan, Xueyan,et al. In Situ Monitoring of Thermal Degradation of CH3NH3PbI3 Films by Spectroscopic Ellipsometry[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2019,123(2):1362-1369.
APA Wang, Xiangqi.,Gong, Junbo.,Shan, Xueyan.,Zhang, Min.,Xu, Zilong.,...&Zhang, Zengming.(2019).In Situ Monitoring of Thermal Degradation of CH3NH3PbI3 Films by Spectroscopic Ellipsometry.JOURNAL OF PHYSICAL CHEMISTRY C,123(2),1362-1369.
MLA Wang, Xiangqi,et al."In Situ Monitoring of Thermal Degradation of CH3NH3PbI3 Films by Spectroscopic Ellipsometry".JOURNAL OF PHYSICAL CHEMISTRY C 123.2(2019):1362-1369.

入库方式： OAI收割

来源：合肥物质科学研究院

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