CaI2: a more effective passivator of perovskite films than PbI2 for high efficiency and long-term stability of perovskite solar cells

A large number of previous studies demonstrate that excess PbI2 in perovskite films is essential for solar cells to achieve high efficiency due to defect passivation, but few studies consider its negative impact on the devices' long-term stability. Herein, we introduced CaI2 instead of PbI2 wit...

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Veröffentlicht in:	Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2018, Vol.6 (17), p.7903-7912
Hauptverfasser:	Chen, Chuanliang, Xu, Yao, Wu, Shaohang, Zhang, Shasha, Yang, Zhichun, Zhang, Wenjun, Zhu, Hongmei, Xiong, Zhenzhong, Chen, Weitao, Chen, Wei
Format:	Artikel
Sprache:	eng
Schlagworte:	Defects Efficiency Grain size Particle size Photoluminescence Photons Photovoltaic cells Solar cells Stability Stoichiometry
Online-Zugang:	Volltext
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