C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
23/128
C01G 11/02 (2006.01) H01L 31/18 (2006.01)
Patent
CA 1113682
SOLAR ENERGY GRADE CADMIUM SULFIDE ABSTRACT OF THE DISCLOSURE A composition consisting essentially of discrete particles of cadmium sulfide that are relatively free of anionic, cationic and volatile impurities has an average particle size of from about 8 to about 25 micrometers and a bulk density of from about 1.7 to about 1.9 grams per cubic centimeter and has superior properties for use in solar energy applications. The composition is prepared by forming a finely-divided impure cadmium sulfide by chemical precipitation, heating the resulting precipitate to an intermediate temperature in a flow of an inert gas, heating the material at an elevated temperature in a flowing sulfide atmosphere selected from hydrogen sulfide and carbon disulfide and cooling the heated material in a sulfide atmosphere to about the intermediate temperature and cooling to ambient temperature in an inert gas.
285439
Chiola Vincent
Faria Sixdeniel
Gte Sylvania Incorporated
R. William Wray & Associates
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