Study of CH 3 NH 3 PbI 3 as an active layer of organo-metal halide perovskite solar cells

Abstract

The low cost and efficient perovskite solar cells (PSCs) have shown considerable improvement in power conversion efficiency in the last few years. PSCs consist of perovskite material as photoactive layer with the advantages of having high diffusion length, high absorption coefficient, broad absorption region, high efficiency and low cost. In the present paper, Methylammonium Lead Iodide (CH 3 NH 3 PbI 3 ) is synthesized and deposited by using drop casting method. The Perovskite material has been characterized with X-Ray Powder Diffraction, Ultraviolet-Visible Spectroscopy, Current-Voltage Characteristics, and Steady State Photocarrier Grating Technique to estimate structural properties, optical band gap, activation energy, photosensitivity and diffusion length of minority-carriers (L diff ) respectively, which are significant factors to have an efficient solar cell. In future, we are going to use this material as an active layer of Perovskite solar cell.