Fully inorganic cesium lead halide perovskites with improved stability for tandem solar cells

被引:0
|
作者
Beal, Rachel E. [1 ]
Slotcavage, Daniel J. [1 ]
Leijtens, Tomas [1 ]
Bowring, Andrea R. [1 ]
Belisle, Rebecca A. [1 ]
Nguyen, William H. [1 ]
Burkhard, George F. [1 ]
Hoke, Eric T. [1 ]
McGehee, Michael D. [1 ]
机构
[1] Stanford Univ, Stanford, CA 94305 USA
关键词
perovskites; thermal stability; tandems;
D O I
暂无
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
A semiconductor that can be processed on a large scale with a bandgap around 1.8 eV could enable the manufacture of highly-efficient low cost double-junction solar cells. Solution-processable organic-inorganic halide perovskites have recently generated considerable excitement as absorbers in single-junction solar cells, and while it is possible to tune the bandgap of (CH3NH3)Pb(BrxI1-x)(3) between 2.3 and 1.6 eV by controlling the halide concentration, optical instability due to photo-induced phase segregation limits the voltage that can be extracted from compositions with appropriate bandgaps for tandem applications. Moreover, these materials have been shown to suffer from thermal degradation at temperatures within the processing and operational window. By replacing the volatile methylammonium cation with cesium, it is possible to synthesize a mixed halide absorber material with improved optical and thermal stability, a stabilized photoconversion efficiency of 6.5%, and a bandgap of 1.9 eV.
引用
收藏
页码:82 / 84
页数:3
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