Size Optimization of Nanoimprinted-Texture on Crystalline Silicon Solar Cell by Three Dimensional Simulation

29th European Photovoltaic Solar Energy Conference and Exhibition; 1053-1055
It is important to suppress the surface reflectance on the cell, in order to manufacture solar cell with high efficiency. We applied zirconium oxide as a texture material on the surface and investigate the optimal texture structure generating low surface reflectance using Diffract MOD simulator. The texture form was investigated pyramid, pillar, moth eye, and inversed moth eye. The texture height and width were varied from 10 nm to 500 nm. The most optimal structure was a pyramid with a height of 200 nm and a width of 10 nm. This texture structure was a weighted average reflectance of 4.7%. The surface reflectance was very sensitive to the variation of texture height. Pyramid texture structure with a width of 200 nm, while keeping a height fixed, was also near a weighted average reflectance of 4.9%. Moreover, that nanoimprinted-texture cell could significantly increase conversion efficiency.