Direct insight into crystallization and stability of hybrid perovskite CH3NH3PbI3via solvothermal synthesis

Abstract

Here we report a one-pot solvothermal approach to synthesize cuboid shaped CH₃NH₃PbI₃ single crystals and study the stability of crystallographic planes in a solvothermal system. Furthermore, the dissolution phenomenon from specific facets was discovered for the first time. Through careful control of the crystallization and dissolution processes, we found that reaction factors including temperature and time play critical roles in the crystallization process of perovskite crystals.