NH2CH═NH2PbI3: An Alternative Organolead Iodide Perovskite Sensitizer for Mesoscopic Solar Cells

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• 作者：Shuping Pang ; Hao Hu ; Jiliang Zhang ; Siliu Lv ; Yaming Yu ; Feng Wei ; Tianshi Qin ; Hongxia Xu ; Zhihong Liu ; Guanglei Cui
• 刊名：Chemistry of Materials
• 出版年：2014
• 出版时间：February 11, 2014
• 年：2014
• 卷：26
• 期：3
• 页码：1485-1491
• 全文大小：441K
• ISSN：1520-5002

文摘

A new nearly cubic NH₂CH鈺怤H₂PbI₃ (FAPbI₃) perovskite was synthesized for the mesoscopic solar cells. The measured band gap of bulk FAPbI₃ is 1.43 eV and it is therefore potentially superior than the CH₃NH₃PbI₃ (MAPbI₃) as the light harvester. A homogeneous FAPbI₃ perovskite layer was deposited on the TiO₂ surface by utilizing the in situ dipping technology. As a result, a high efficiency of 7.5% was achieved using P3HT as the hole transport material. The nearly cubic crystal structure and appropriate band gap render this new FAPbI₃ perovskite extremely attractive for next generation high-efficiency low-cost solar cells.