Effects of annealing temperature on photovoltaic properties of lead-free (CH3NH3)3Bi2I9 solar cells

被引：7

作者：

Shirahata, Yasuhiro ^{[1
,2
]}

机构：

[1] Shinshu Univ, Ctr Energy & Environm Sci, 3-15-1 Tokida, Ueda, Nagano 3868567, Japan

[2] Kagawa Coll, Natl Inst Technol KOSEN, Dept Gen Educ, 551 Kohda,Takuma Cho, Mitoya, Kagawa 7691192, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2020年 / 128卷 / 05期

关键词：

(CH3NH3)(3)Bi2I9; Annealing temperature; Photovoltaic properties; Solar cells; METHYLAMMONIUM BISMUTH IODIDE; PHASE-TRANSITIONS; PEROVSKITES; PERFORMANCE; FABRICATION; ABSORPTION; LENGTHS; TIN;

D O I：

10.2109/jcersj2.19156

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Effects of annealing temperature on photovoltaic properties of lead-free (CH3NH3)(3)Bi2I9 solar cells were investigated. The (CH3NH3)(3)Bi2I9 photovoltaic cells were fabricated by a hot air blow-assisted spin-coating method. The spin-coated (CH3NH3)(3)Bi2I9 photoactive layers were annealed at temperatures of 100-150 degrees C. Current density-voltage characteristics of the (CH3NH3)(3)Bi2I9 photovoltaic cells showed that conversion efficiency increased with increasing annealing temperature. Microstructures and optical properties of the (CH3NH3)(3)Bi2I9 photoactive layers were also investigated by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, and ultraviolet-visible-near infrared spectroscopy. The investigation revealed that the changes in lattice constants, crystallite size, surface morphology, and iodide/bismuth ratio of the (CH3NH3)(3)Bi2I9 were attributed to the annealing temperature, resulting in the changes in the photovoltaic properties of the (CH3NH3)(3)Bi2I9 solar cells. (C) 2020 The Ceramic Society of Japan. All rights reserved.

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页码：298 / 303

页数：6

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