Optimum efficiency of CdS CdTe Thin film solar cell

Abstract EN

In this study, the absorber layer (CdTe) and window layer (CdS) thickness parameters have been investigated through simulation by SCAPS to find out the higher conversion efficiency for the CdS / CdTe thin film solar cell.

It is found that the parameters Jsc, Voc, η are increased for the increasing absorber layer thickness, and quantum efficiency show overlapping after the 500 nm wavelength for different CdTe thicknesses.

In addition, it is revealed that the highest calculated efficiency can be achieved with the absorber layer thickness of 3.5 μm and window layer of thickness 0.05 μm, was 17.27 %.

Where the effect of window layer show that the calculations gave, as CdS thickness increased Voc, was nearly constant, but Jsc, η decreased.

Using best calculated thicknesses in this study for both CdS and CdTe, the fabricated CdS / CdTe thin film solar cell efficiency measured 13.73 % , this is expected may be du to interface layer and density of stats on both films.