The Investigation of Effect on The Efficiency of CdTe-Based Solar Cell of MoO3 Buffer Layer

In this study, the effect on the efficiency of CdS/CdTe solar cell with MoO3 buffer layer was examined. Two sample was grown as Cam/FTO/SnO2/CdS/CdTe/Au and Cam/FTO/SnO2/CdS/CdTe/MoO3/Au. MoO3 layer was deposited as a buffer layer between CdTe and metal electrode in the back contact of CdTe solar cell. Solar cells were grown on glass/fluorine tin oxide substrate by Sputtering system. The morphological properties of CdS/CdTe solar cell structure with MoO3 buffer layer have been evaluated by means of scanning electron microscope (SEM) and atomic force microscopy (AFM) measurements. In addition, the cell device was fabricated to obtain electrical output parameters of both the traditional CdTe-based cell and CdTe cell with MoO3 buffer layer. The current？voltage measurements were carried out at room temperature under both dark and air mass 1.5 global radiations. The energy conversion efficiency value has been obtained for traditional cell and the cell with MoO3 buffer layer as 8.93% and 10.31% 1 Sun, respectively. It was observed that the integration of MoO3 layer into CdTe-based solar cell increased cell efficiency by 15.45%