期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 7, 期 5, 页码 746-751出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.6b00002
关键词
-
类别
资金
- Department of Defense through the National Defense Science and Engineering Graduate Fellowship (NDSEG) Program
- Stanford University through Benchmark Stanford Graduate Fellowships
- National Science Foundation Graduate Research Fellowship Program [1147470]
- Department of Energy through the Bay Area Photovoltaic Consortium [DE-EE0004946]
- Department of Energy through the Sunshot NextGen III program [DE-EE0006707]
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 on crystalline Si. Solution-processable organicinorganic halide perovskites have recently generated considerable excitement as absorbers in single-junction solar cells, and though it is possible to tune the bandgap of (CH3NH3)Pb(BrxI1x)(3) between 2.3 and 1.6 eV by controlling the halide concentration, optical instability due to photoinduced 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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据