Mixed A-Cation Perovskites for Solar Cells: Atomic-Scale Insights Into Structural Distortion, Hydrogen Bonding, and Electronic Properties
Mixed A-Cation Perovskites for Solar Cells: Atomic-Scale Insights Into Structural Distortion, Hydrogen Bonding, and Electronic Properties
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DOI：
10.1021/acs.chemmater.8b01851
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发表时间：
2018-08-14
影响因子：
8.6
通讯作者：
Islam, M. Saiful
中科院分区：
文献类型：
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作者：
Ghosh, Dibyajyoti;Smith, Alexander R.;Islam, M. Saiful
含有A位阳离子如甲脒鎓（CH（NH 2）（2）（+），FA）和较小的铯（Cs+）阳离子的混合物的混合卤化铅钙钛矿由于其改进的稳定性和太阳能电池性能而吸引了相当大的兴趣。然而，在原子尺度上的结构变化和这些混合阳离子钙钛矿的光电性质的修改还没有完全理解。在这里，我们研究FA（1-x）Cs（x）PbI（3）（x
Hybrid lead halide perovskites containing a mixture of A-site cations such as the formamidinium (CH(NH2)(2)(+), FA) and the smaller cesium (Cs+) cations have attracted considerable interest due to their improved stability and solar cell performance. However, the structural changes at the atomic scale and modifications to the optoelectronic properties of these mixed cation perovskites are not fully understood. Here, we investigate the FA(1-x)Cs(x)PbI(3) (x