Complete Conversion of PbI₂ to Methyl Ammonium PbI₃ Improves Perovskite Solar Cell Efficiency

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• 作者：Dr. Lili Wang ; Wei-Chun Lin ; Christopher McCleese ; Anton Kovalsky ; Prof. Yixin Zhao and Prof. Clemens Burda
• 刊名：ChemPhysChem
• 出版年：2017
• 出版时间：January 4, 2017
• 年：2017
• 卷：18
• 期：1
• 页码：47-50
• 全文大小：1087K
• ISSN：1439-7641

文摘

One major disadvantage to the two-step deposition method of perovskite films is the incomplete conversion from PbI₂ to perovskite resulting in the presence of a thick PbI₂ layer, which hinders charge carrier transportation. In this study, a quaternary ammonium salt has been used to manipulate the crystallization of PbI₂ in the first deposition step, which leads to facile incorporation of the methylammonium iodide into the Pb-I lattice and promotes the conversion of PbI₂ to perovskite leading to improved device performance.