METHODS FOR MAKING THIN FILM POLYCRYSTALLINE PHOTOVOLTAIC DEVICES USING ADDITIONAL CHEMICAL ELEMENT AND PRODUCTS THEREOF

摘要

Method for making a photovoltaic device and structure thereof. The method includes providing a substrate including a glass layer, a first conductive layer on the glass layer, and a cadmium sulfide layer on the first conductive layer. Additionally, the method includes depositing one or more first materials on the cadmium sulfide layer. The one or more first materials include a first quantity of chemical element cadmium and a second quantity of chemical element tellurium. Moreover, the method includes performing a first thermal treatment to at least the first quantity of chemical element cadmium, the second quantity of chemical element tellurium, and a third quantity of chemical element chlorine, so that a poly crystalline layer composed of at least cadmium telluride is formed on the cadmium sulfide layer. Also, the method includes depositing one or more second materials on a surface of the polycrystalline layer.