Highly Uniform Large-Area (100 cm2) Perovskite CH3NH3PbI3 Thin-Films Prepared by Single-Source Thermal Evaporation

被引：47
作者：
Liang, Guangxing [1 ]
Lan, Huabin [1 ]
Fan, Ping [1 ]
Lan, Chunfeng [1 ]
Zheng, Zhuanghao [1 ]
Peng, Huanxin [1 ]
Luo, Jingting [1 ]
机构：
[1] Shenzhen Univ, Coll Phys & Energy, Shenzhen Key Lab Adv Thin Films & Applicat, Shenzhen 518060, Peoples R China
来源：
COATINGS | 2018年 / 8卷 / 08期
基金：
中国国家自然科学基金;
关键词：
single-source thermal evaporation; large-area perovskite; thin film; solar cell; SOLAR-CELLS; EFFICIENT; PERFORMANCE; HYSTERESIS; MORPHOLOGY; GROWTH; CARBON; ROUTE;
D O I：
10.3390/coatings8080256
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, we report the reproducible preparation method of highly uniform large-area perovskite CH3NH3PbI3 thin films by scalable single-source thermal evaporation with the area of 100 cm(2). The microstructural and optical properties of large-area CH3NH3PbI3 thin films were investigated. The dense, uniform, smooth, high crystallinity of large-area perovskite thin film was obtained. The element ratio of Pb/I was close to the ideal stoichiometric ratio of CH3NH3PbI3 thin film. These films show a favorable bandgap of 1.58 eV, long and balanced carrier-diffusion lengths. The CH3NH3PbI3 thin film perovskite solar cell shows a stable efficiency of 7.73% with almost no hysteresis, indicating a single-source thermal evaporation that is suitable for a large area perovskite solar cell.
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页数：11
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