H - Electricity – 01 – L
Patent
H - Electricity
01
L
345/22
H01L 31/04 (2006.01) H01L 21/368 (2006.01) H01L 31/068 (2006.01) H01L 31/18 (2006.01)
Patent
CA 1077161
ABSTRACT OF THE DISCLOSURE The invention relates to systems and methods for generating electrical power from light radiation, and specifically from solar radiation. Among the most impor- tant existing devices for converting solar energy into electricity are devices comprising photoelectric material which is substantially monocrystalline and must be grown from crystalline solution, with a high failure rate. De- vices and fabrication techniques utilizing polycrystalline semiconductive materials have generally proven inadequate due to high production costs. Also, the failure rate in fabricating such devices is relatively high because of penetration by impurities. There has been a recent attempt to form photo-voltaic power generating means with a com- pound semiconductor materials having a cadmium sulfide layer. However, the results were poor since the oadmium sulfide was sometimes porous giving rise to shorted junc- tions. The present invention provides an economical and reliable semiconductor photo-voltaic cell and a method for making It. The semiconductor in the present invention is electrolytically formed at a cathode in an electrolytic solution by causing discharge or decomposition of ions or molecules of a non-metallic component with deposition of the non-metallic component on the cathode and simultane- ously providing ions of a metal component which discharge and combine with the non-metallic component at the cathode thereby forming the semiconductor compound film material thereon. By stoichiometrically adjusting the amounts of the components, or otherwise by introducing dopants into the desired amounts, an N-type layer can be formed and thereafter a P-type layer can be formed with a junction therebetween.
280011
Kroger Ferdinand A.
Panicker M.p. Ramachandra
Rod Robert L.
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