Cesium-Trifluoroacetate Doped MA/FA-Based Perovskite Solar Cells with Inverted Planar Structure

被引：4
|
作者：
Wu, Chunxia [1 ,2 ]
Zhu, Liang [1 ]
Zhang, Yunfang [2 ]
Dai, Jun [2 ]
机构：
[1] Jiangsu Univ, Coll Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China
[2] Jiangsu Univ Sci & Technol, Coll Sci, Zhenjiang 212003, Jiangsu, Peoples R China
来源：
JOURNAL OF ELECTRONIC MATERIALS | 2020年 / 49卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Perovskite solar cells; CsTFA; methylammonium chlorine; HIGH-EFFICIENCY; LEAD; STABILITY; PERFORMANCE; POTASSIUM; TOLERANCE; ABSORBER; IODIDE;
D O I：
10.1007/s11664-020-08492-1
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Triple cation perovskites are of particular interest among halide perovskites due to their impressive photovoltaic performance. In this paper, we introduce cesium trifluoroacetate (CsTFA) into methylammonium/formamidinium (MA/FA) perovskite to prepare a triple cation Cs/MA/FA perovskite solar cell with inverted planar structure. The effects of CsTFA concentration and spinning speed of the perovskite layer on the morphology of perovskite film and performance of the perovskite solar cell are studied. We find that the power conversion efficiency can be 10.55% when the spinning speed is 6000 rpm and CsTFA content is 5%. When, ethylammonium chlorine (MACl) is then employed to passivate the Cs/MA/FA-based perovskite thin film surface, the power conversion efficiency (PCE) is further improved to 12.19%. The results indicate that CsTFA can be a potential source of Cs ions for triple cation Cs/MA/FA perovskite solar cells.
引用
收藏
页码：7144 / 7152
页数：9
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