LAUSR

In this work, solar cells that have double-layer coatings of $$\hbox {CdTe}_{0.65}\hbox {P}_{0.35}$$CdTe0.65P0.35/Si with high efficiency have been fabricated. The electrical and optical properties of $$\hbox {CdTe}_{0.65}\hbox {P}_{0.35}$$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 $$\hbox {TiO}_{2}$$TiO2 and $$\hbox {SiO}_{2}$$SiO2 thin films kept over 80% of transmittance. As the AR coating with graded refractive indices using $$\hbox {TiO}_{2}$$TiO2 and $$\hbox {SiO}_{2}$$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 $$\sim $$∼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.