Simulation Study on the Effects of Changing Band gap on Solar Cell Parameters

Abstract

Solar cell is treated as a wonderful source of renewable energy. Researchers are much interested in this source of renewable energy because of being environment friendly. Solar cell technology is much advance and day by day it is being enriched. In this thesis, we study the numerical analysis of solar cell parameters; such as open circuit voltage, short circuit current, maximum power, fill factor, and external quantum efficiency as a function of observer layer band gap. These parameters are known as basic parameters of a solar cell. In this thesis, band gap of absorber layer of a solar cell structure is selected to be varied, and the impacts of varying band gap on the basic solar cell parameters are presented. ATLAS SILVACO is used to construct and simulate the CIGS solar cell structure. Standard AM1.5 spectrum for incident photon is used for this analysis. The characteristic of external quantum efficiency with respect to input photon wavelength is also studied for different band gap of absorber layer. MATLAB is used to plot different characteristics of desired study.