Effects of precursor solution composition on the performance and I-V hysteresis of perovskite solar cells based on CH3NH3PbI3-xClx

被引:26
作者
Zhang, Z. L. [1 ]
Men, B. Q. [2 ]
Liu, Y. F. [1 ]
Gao, H. P. [1 ]
Mao, Y. L. [1 ,3 ]
机构
[1] Henan Univ, Sch Phys & Elect, Kaifeng 475004, Peoples R China
[2] Henan Vocat Coll Agr, Zhongmu 451450, Peoples R China
[3] Henan Univ, Inst Computat Mat Sci, Kaifeng 475004, Peoples R China
来源
NANOSCALE RESEARCH LETTERS | 2017年 / 12卷
关键词
I-V hysteresis; Precursor solution composition; CH3NH3PbI3-xClx; MIXED-HALIDE PEROVSKITE; QUANTUM DOTS; TIO2; LAYER; INTERFACE; CHLORIDE; CRYSTALLIZATION; NANOPARTICLES; FABRICATION; PARAMETERS; TRANSPORT;
D O I
10.1186/s11671-017-1872-8
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Precursor solution of CH3NH3PbI3-xClx for perovskite solar cells was conventionally prepared by mixing PbCl2 and CH3NH3I with a mole ratio of 1:3 ( PbCl2: CH3NH3I). While in the present study, CH3NH3PbI3-xClx-based solar cells were fabricated using the precursor solutions containing PbCl2 and CH3NH3I with the mole ratios of 1:3, 1.05:3, 1.1:3, and 1.15:3, respectively. The results display that the solar cells with the mole ratio of 1.1:3 present higher power conversion efficiency and less I-V hysteresis than those with the mole ratio of 1:3. Based on some investigations, it is concluded that the higher efficiency could be due to the smooth and pinhole free film formation, high optical absorption, suitable energy band gap, and the large electron transfer efficiency, and the less I-V hysteresis may be attributed to the small low frequency capacitance of the device.
引用
收藏
页数:8
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