Paper SS-TuP17
Probe the Degradation Mechanism of Hybrid Perovskite by In Situ DRIFTs

Tuesday, November 8, 2016, 6:30 pm, Room Hall D

Methylammonium Lead Iodide Perovskite (MAPbI₃) is a promising photoelectronic material for photovoltaics and LEDs. However, the stability of MAPbI₃ under the external application environments is a big concern. The underlying mechanism of decomposition of MAPbI₃ is not well understood yet. In this poster, we will use in-situ Diffuse reflectance infrared fourier transform spectroscopy for the first time to understand the surface reaction mechanism in the decomposition of MAPbI₃ in various related applications environments. With the unique setup and high-surface-area configuration, our results showed that the degradation rate is strongly affected by the temperature and chemical composition of the application environments. The degradation mechanism of MAPbI₃ changes with the application environments. Our results provide a fresh view of the degradation pathways of MAPbI₃ and will help optimize the synthesis of MAPbI₃ and provide potential solutions for stabilizing MAPbI₃.