Enhancement of Silicon Solar Cells Efficiency using Laser Surface Modification

Abstract

Solar energy is rapidly becoming one of the most promising renewable energy sources available to us. This work aimed tomodifythe surface of mono crystalline silicon solar cell.Texturing of semiconductor surface can be utilized to capture as much of the incident light as possible to decrease reflection and increase absorption to enhanced device performance without altering the bulk properties. Laser Direct Writing technique was used to achieve the texturing results, that’s based on the interaction between ultra shortpulses of CO2 laser (10.6μm) and silicon used for solar cells. An increase in short circuit current by 75.1% and efficiency by 50% was observed.