Preparation of vanadium diselenide thin films and their application in CdTe solar cells

• DOI: 10.1016/j.tsf.2013.10.032
• Publication Date: 2013-10-16T14:02:06Z
• Authors: Jingjing Gao; Xia Di; Wei Li; Lianghuan Feng; Jingquan Zhang; Lili Wu; Bing Li; Wenwu Wang; Guanggen Zeng; Jiayi Yang
• Keywords: 02 engineering and technology; 0210 nano-technology; 7. Clean energy

Abstract Vanadium diselenide thin films were prepared by electron beam evaporation. The properties of vanadium diselenide thin films were investigated using X-ray diffraction, scanning electron microscope, transmission spectra, electrical and Hall measurements. To further investigate the application of vanadium diselenide thin films, device performance in CdTe solar cells with a vanadium diselenide layer was also studied. The results indicate that vanadium diselenide thin films had a stable hexagonal structure after annealing. The thin films were p-type semiconductor materials with the high work function and high carrier concentration. Vanadium diselenide thin films could form a good ohmic contact to CdTe solar cells. Thus, cell performance was greatly improved when introduced a vanadium diselenide buffer layer.