Synthesis and Characterization of Organo Lead Halide Perovskite Absorber Layer under ambient conditions for Perovskite Solar Cells

Abstract

Perovskite solar cells are considered a promising material with the potential to create high performance solar cells at a low cost. They offer several advantages over many thin-film absorber layers, primarily because of their high absorption coefficient, tuneable band gap, ability to be processed at low temperature, and abundant availability of their elemental constituents. In this research study, the focus was on synthesizing MAPbI3 perovskite-based absorber layer through a one-step antisolvent method. The aim of the study was to investigate the impact of different antisolvents, specifically chlorobenzene and toluene, on the crystallization process to achieve faster crystal growth. During the thin film formation, both chlorobenzene and toluene were employed as antisolvents. Comparative study conducted to understand the crystallization kinetics and film morphology .The results revealed that the choice of antisolvent had a remarkable effect on the crystallization rate of the perovskite. Faster crystal growth is observed while using toluene as antisolvent as compared to chlorobenzene . The research also involved various characterizations, such as XRD, SEM, UV-Vis, FTIR, and Hall effect measurements. The purpose of characterization is to analyze the crystal structure, surface morphology, optical and electrical behavior of thin films.