Abstract:
Cadmium telluride (CdTe) is one of the leading materials fabricating low
cost and high efficiency solar cells. In this work, a conventional structure of
cadmium telluride solar cells was investigated and solar cell efficiency of
14.2% was achieved as a preliminary result using the hetero-structure of
SnCVCdS/CdTe. In this study, cadmium sulfide layer was deposited using
chemical bath deposition (CBD) method and cadmium telluride layer was
deposited using close space sublimation process (CSS). Here, cadmium
sulfide thickness was kept constant and the cadmium telluride layer
thickness was varied to see the effect of CdTe layer thickness on cell
properties. It was observed that the cell parameters such as open-circuit
voltage and the fill factor improved considerably with increasing CdTe
layer thickness and hence the cell efficiency showed a significant
improvement. However, there was no considerable improvement in the
short-circuit current density.
