Thermal Behavior of Methylammonium Lead-Trihalide Perovskite Photovoltaic Light Harvesters

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• 作者：Amalie Dualeh ; Peng Gao ; Sang Il Seok ; Mohammad Khaja Nazeeruddin ; Michael Gr盲tzel
• 刊名：Chemistry of Materials
• 出版年：2014
• 出版时间：November 11, 2014
• 年：2014
• 卷：26
• 期：21
• 页码：6160-6164
• 全文大小：357K
• ISSN：1520-5002

文摘

Recently organic鈥搃norganic hybrid perovskites have attracted attention as light harvesting materials in mesoscopic cells. While a considerable number of deposition and formation methods have been reported for the perovskite crystalline material, most involve an annealing step. As such, the thermal behavior of this material and its individual components is of crucial interest. Here, we examine the thermal properties of the CH₃NH₃PbX₃ (X = I or Cl) perovskite using thermogravimetric analysis. The role of the precursors is exposed, and the effect of the formation of excess organic species is investigated. The sublimation behavior of the organic component is intensively scrutinized. Furthermore, differential scanning calorimetry is employed to probe the crystal phase structure, revealing subtle differences depending on the deposition method.