Effect of Precursors Ratio on Crystallinity and Thermal Stability of CH3NH3PbI3.

CH3NH3PbI3 is a newly developed organic inorganic perovskite light harvesting (OIPLH) material which is using for different electronic applications. In this work, we have synthesized CH3NH3PbI3 with different ratio of precursor CH3NH3I and PbI2. We have tried to explain how the ratio of precursors affected the crystallinity and thermal stability of OIPLH material. XRD study of material shows that, crystallinity of material losses on increasing the precursor ratio and simultaneous thermal analysis (TGA/DTA) indicates the more thermal decomposition with increasing precursor ratio due to excess amount of CH3NH3I. [ABSTRACT FROM AUTHOR]