Film Deposition Techniques Impact the Defect Density and Photostability of MAPbI3 Perovskite Films

被引:25
作者
Akbulatov, Azat F. [1 ]
Frolova, Lyubov A. [1 ,2 ]
Tsarev, Sergey A. [2 ]
Zhidkov, Ivan [3 ]
Luchkin, Sergey Yu [2 ]
Kurmaev, Ernst Z. [3 ,4 ]
Stevenson, Keith J. [2 ]
Aldoshin, Sergey M. [1 ]
Troshin, Pavel A. [1 ,2 ]
机构
[1] Russian Acad Sci IPCP RAS, Inst Problems Chem Phys, Chernogolovka 142432, Russia
[2] Skolkovo Inst Sci & Technol, Moscow 143026, Russia
[3] Ural Fed Univ, Inst Phys & Technol, Ekaterinburg 620002, Russia
[4] Russian Acad Sci, Ural Branch, MN Mikheev Inst Met Phys, Ekaterinburg 620990, Russia
基金
俄罗斯科学基金会;
关键词
SOLAR-CELLS; PHOTOCHEMICAL STABILITY; EFFICIENCY; HYBRID;
D O I
10.1021/acs.jpcc.0c07673
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Over the last decade, perovskite solar cells (PSCs) have demonstrated tremendous growth in power conversion efficiencies. Different strategies toward developing new perovskite film deposition techniques were of particular help in such progress. Considering generally the poor operational stability of PSCs, understanding the influence of deposition methods on the stability of lead halide perovskite films is vital to facilitate further practical application of this technology. Herein, we studied the impact of CH3NH3PbI3 deposition methods on the photostability of perovskite films. In particular, one-step deposition in a nitrogen and an ambient air atmosphere, two-step and chemical vapor deposition, as well as close-space sublimation methods were explored. We revealed that the lifetime of absorber films under light exposure can be spectacularly extended by a factor of 2-3 when using an appropriate deposition technique. In particular, the films grown by chemical vapor deposition showed superior photostability compared to the samples obtained by other methods. A clear correlation between the concentration of defects in perovskite films and their photostability was revealed, while the grain size was shown to have a minor effect under anoxic conditions. We believe that these findings are essentially important for improving the operational lifetime of perovskite solar cells and facilitating their commercialization.
引用
收藏
页码:21378 / 21385
页数:8
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