Emulsion-LARP method: Optimization of demulsifier for synthesis of methylammonium lead bromide nano-structures.

An understanding on the influence of the type of demulsifier used on the degree of crystallization in emulsion process-grown organic-inorganic halide perovskite nanocrystals is presently lacking. We conducted a detailed investigation on the structural and optical properties of methylammonium lead bromide (CHNHPbBr) nano-structures synthesized using the emulsion-ligand-assisted re-precipitation method with three different demulsifiers (acetone, -butanol, and butanol). Structural analysis conducted using X-ray diffraction, HRTEM, and Raman studies showed that -butanol served as the best demulsifier among the three.