The performance study of CdTe/CdS/SnO2 solar cell

Abstract

In this research, efficiency of cadmium telluride cell has been studied by relationship between efficiency and different parameters such as thickness of different layers in CdTe cell, temperature and doping density of cell layers. The simulation result showed that with increase of thickness of absorbent layer CdTe cell efficiency increases very rapidly, until the thickness of 1.5 µm. By reducing the thickness of CdS (n type) efficiency increases. The simulation result also showed that efficiency does not depend on the front contact layer SnO2. The cell showed high stability with high temperature. The efficiency of cell decreases linearly with increase of temperature. The efficiency is also affected by doping concentration of absorbent layer (NA). Efficiency increases with NA from 1 × 1015 to 1 × 1016 cm−3 by keeping ND of CdS layer fixed at 10−18 cm−3. Similarly by keeping doping concentration of absorbent layer NA = 5 × 1016 cm−3 constant, if doping concentration of CdS layer increases from 1 × 1016 to 1 × 1018 cm−3 efficiency of cell increases. In this study SCAPS 1D simulation software was used to evaluate the performance of cadmium telluride cell.