Abstract
In this work, solar cells that have double-layer coatings of CdTe0.65P0.35/Si with high efficiency have been fabricated. The electrical and optical properties of CdTe0.65P0.35/Si as transparent electrodes and antireflection (AR) coatings for Si-based solar cells are studied. This is done by adding fabricated graded refractive index AR coatings using TiO2 and SiO2 thin films kept over 80% of transmittance. As the AR coating with graded refractive indices using TiO2 and SiO2 layers was applied to generic silicon-based solar cell, the current level increases nearly twice more than that of bare silicon solar cell without AR coatings. The obtained results show that optimized double-layer ARCs can minimize reflectance within the spectral range of similar to 400-945 nm, with the latter maintaining this performance over a broader spectrum of 390-1000 nm, in comparison with 45.05% reflectance for the bare solar cell.