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

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• 作者：Jingjing Gao ; Xia Di ; Wei Li ; Lianghuan Feng ; Jingquan Zhang ; Lili Wu ; Bing Li ; Wenwu Wang ; Guanggen Zeng ; Jiayi Yang
• 关键词：Vanadium diselenide ; Thin films ; Back contact ; Cadmium telluride ; Solar cells ; Electron beam evaporation
• 刊名：Thin Solid Films
• 出版年：1 January, 2014
• 年：2014
• 卷：550
• 期：Complete
• 页码：638-642
• 全文大小：670 K

文摘

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.