Fabrication and characterization of potassium- and formamidinium-added perovskite solar cells

被引：14
|
作者：
Kandori, Satsuki [1 ]
Oku, Takeo [1 ]
Nishi, Kousuke [1 ]
Kishimoto, Taku [1 ]
Ueoka, Naoki [1 ]
Suzuki, Atsushi [1 ]
机构：
[1] Univ Shiga Prefecture, Dept Mat Sci, 2500 Hassaka, Hikone, Shiga 5228533, Japan
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2020年 / 128卷 / 10期
关键词：
Perovskite; Solar cell; Potassium; Formamidinium; HIGH-EFFICIENCY; LEAD HALIDE; STABILITY; HYSTERESIS; CATIONS;
D O I：
10.2109/jcersj2.20090
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：
Perovskite solutions with potassium (K) and formamidinium (FA) iodides added were used to fabricate perovskite solar cells. Since the lattice constants increased with the addition of FA, the substitution by FA of the CH3NH3 (MA) site of the perovskite crystal was confirmed. In addition, conversion efficiencies were improved for devices with K and FA added compared with standard devices. The presence of K in the perovskite solution promoted formation of highly (002)-oriented crystals, which decreased the lattice strain of perovskite crystals. Filling the MA defect sites with K and FA can prevent the recombination of electrons and holes and improve the photovoltaic characteristics. (C) 2020 The Ceramic Society of Japan. All rights reserved.
引用
收藏
页码：805 / 811
页数：7
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