PROCEDURE TO MANUFACTURE SOLAR CELLS IN WHICH CADMIUM TELLURIDE DEPOSITION IS MADE BY SUBLIMATION AT EQUAL SOURCE AND SUBSTRATE TEMPERATURES.

摘要

Method for Manufacturing Solar Cells in which the deposition of cadmium Telluride is performed by sublimation at temperatures EQUAL Source and substrateProcedure with a First stage of preparation of the substrate, two stages of deposition of the Semiconductor layers.One of which is the deposition of cadmium Telluride type 'P' on the substrate, and a final stage of Formation of the electrodes.The stage of deposition of cadmium Telluride on the substrate includes: a first step of preparing a Fountain on which is a mixture of cadmium and Tellurium Powder Dust with a0.2 to 3% by weight of Cadmium chloride; a second step of positioning the source face to face the top Face of the substrate which is formed on the layer of cadmium Telluride,The Source and substrate separated by a distance of 3mm Mechanical Separators; a Third step of sublimation and composition of Transport Layer deu00d1 Tellurium CadmiumIn Inert atmosphere and a uniform temperature of between 550 and 700 C C, so that the layer of cadmium Telluride REACH a thickness of the Order of 2micrones.