Effect of Formamidinium/Cesium Substitution and PbI2 on the Long-Term Stability of Triple-Cation Perovskites,ChemSusChem

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Effect of Formamidinium/Cesium Substitution and PbI2 on the Long-Term Stability of Triple-Cation Perovskites
ChemSusChem ( IF 7.5 ) Pub Date : 2017-09-22 06:35:49 , DOI: 10.1002/cssc.201701203
Shashwat Shukla ₁ , Sudhanshu Shukla _{1,

2} , Lew Jia Haur ₁ , Sai S. H. Dintakurti ₂ , Guifang Han ₁ , Anish Priyadarshi ₁ , Tom Baikie ₁ , Subodh G. Mhaisalkar _{1,

2} , Nripan Mathews _{1,

2}

Affiliation

Addition and multiple cations: In triple-cation mixed-halide perovskite films, the addition of excess PbI₂ is known to benefit the performance, but its impact on the degradation kinetics of the perovskite is less well known. In this study, the amount of PbI₂ in the triple-cation perovskite films is varied and the degradation kinetics monitored. The inclusion of excess PbI₂ adversely affects the stability of the material but also leads to enhanced grain sizes and better optical absorption.

中文翻译：

Formamidinium / Cesium取代和PbI2对三阳离子钙钛矿长期稳定性的影响

添加和多种阳离子：在三阳离子混合卤化物钙钛矿薄膜中，添加过量的PbI ₂有助于提高性能，但对钙钛矿降解动力学的影响却鲜为人知。在这项研究中，改变了三阳离子钙钛矿薄膜中PbI ₂的含量，并监测了降解动力学。包含过量的PbI ₂会对材料的稳定性产生不利影响，但也会导致晶粒尺寸增加和更好的光吸收。

更新日期：2017-09-22

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