Study On The Preparation And Property Of CdS Thin Film And Solar Cell

The exploration and using of new energy have got many attentions in modern times. As a kind of clean energy, the solar energy has got many good graces. It's the struggling direction to open out a cheapness solar cell in the filed of solar energy generate electricity. In all solar cells, the CdS/CdTe thin film solar cell is the most impossible one can be applied all abroad. It is mostly structure is ITO/CdS/CdTe/back contacts, so the important areas of research is the quality of film, the consistence of adulteration and the stand or fall of back contacts.The CdS thin films is grown with the method of CBD in an aqueous solution containing cadmium chloride, ammonium chloride, thiourea and ammonia. In order to decrease the colloidal particles, we used the method of titration in the responses of chemistry to prepare CdS thin films. XRD,SEM and absorption spectrum were used to research the crystal structure and optical properties of as deposited CdS thin films annealed CdS thin films and CdCl2 treatment and annealed CdS thin films. It is shown that CdCl2 treatment before annealing can greatly improve the structure and optical properties of the CdS thin films. This paper reviews work on the structure and performance of photovoltaic on the back contact formation process of CdS/CdTe thin film solar cells. It is found that Cu electrode with 10nm and Mo electrode with 90nm, deal with annealing temperature at 1800C and annealing time at 50min,under nitrogen can prepared better conversion efficiency solar cell.