Optical Characteristics of Copper-Doped-Perovskite Materials

Abstract

Doping of perovskite solar cells is a regularly used approach to adjust and modify the structures and properties of organic-inorganic hybrid perovskite such as CH3NH3PbI3 material, and subsequently increase the conversion efficiency. In this work, optical absorption is calculated for copper-doped-perovskite material based on the density functional theory analysis for tetragonal crystal structures. We investigated the effect of doping CH3NH3PbI3 with copper, as an optical alternative to Pb atom in central tetragonal structure. As a conclusion, some enhancements of the optical properties by the replacement of Cu by the Pb atom are observed, such as optical absorption at certain visible spectrum regions, along with more intensive field mapping. This optical enhancement can lead to a better improvement of perovskite solar cell according to metallic-doing substitutional defect concept.