Method of manufacturing photo-voltaic devices

Details Method of manufacturing photo-voltaic devices Method of manufacturing photo-voltaic devices

H - Electricity

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H01L 31/04 (2006.01) H01L 27/142 (2006.01) H01L 31/0336 (2006.01) H01L 31/18 (2006.01)

Patent

CA 1165847

ABSTRACT METHOD OF MANUFACTURING PHOTO-VOLTAIC DEVICES The invention relates to the manufacture of a cadmium sulphide photo-voltaic device. A substrate such as a glass is coated with successive layers which are made, in order, of tin oxide, cadmium sulphide, cuprous sulphide and copper to build up a photo-voltaic junction. In order to achieve a fast deposition rate of the cadmium sulphide while achieving a well ordered crystal structure the cadmium sulphide layer is deposited in two stages, the first involving spraying of a weak precursor solution and the second a substantially more concentrated solution to achieve at least a five times increase in the deposition rate. The invention also describes improved techniques for spraying and reducing the effects of the resistivity of the tin oxide first electrode.

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