A modified sequential deposition method for fabrication of perovskite solar cells

被引：38
|
作者：
Li, Hangqian [1 ]
Li, Shibin [1 ]
Wang, Yafei [1 ]
Sarvari, Hojjatollah [2 ,3 ]
Zhang, Peng [1 ]
Wang, Meijuan [1 ]
Chen, Zhi [1 ,2 ,3 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Optoelect Informat, Chengdu 610054, Peoples R China
[2] Univ Kentucky, Dept Elect & Comp Engn, Lexington, KY 40506 USA
[3] Univ Kentucky, Ctr Nanoscale Sci & Engn, Lexington, KY 40506 USA
来源：
SOLAR ENERGY | 2016年 / 126卷
基金：
中国国家自然科学基金;
关键词：
Perovskite solar cell; Capping layer; Pre-coating; Modified sequential deposition; HIGH-PERFORMANCE; HALIDE PEROVSKITES; CHARGE-TRANSPORT; EFFICIENT; CH3NH3PBI3; MORPHOLOGY; GROWTH; FILMS;
D O I：
10.1016/j.solener.2015.12.045
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this paper, the important role of perovskites capping layers in the compact-TiO2/mesoporous-TiO2/CH3NH3PbI3/HTM/Au solar cells was investigated. The capping layers were prepared by controlling the concentration of PbI2 solutions, pre-coating in CH3NH3I solution, the reaction temperature, and the dipping time in the sequential deposition process. The results of X-ray diffraction (XRD) spectra revealed that there was no PbI2 remains observed in the perovskite crystal structure, indicating that PbI2 was converted into CH3NH3PbI3 completely. The morphologies of the capping layers are studied by scanning electron microscopy (SEM). Furthermore, organic-inorganic hybrid perovskite solar cells fabricated using the continuous and compact perovskite capping layers exhibit power conversion efficiency of 12.9% and photocurrents up to 19.4 mA cm(-2). (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：243 / 251
页数：9
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