Depositing silicon on carbon strip - by drawing strip through liq. silicon, used in solar cell mfr.

摘要

Method for depositing Si on a strip of carbon, opt-coated with pyrolytic carbon, comprises drawing the strips through a container contg. liq. Si and fed from a slot in its base. Specifically, the strip is first pierced with a number of holes of dia. of about 1mm. The Si coated C is used in mfr. of solar cells. The solar cells formed from the Si coated C strip have higher power yield than in prior art with efficiencies exceeding 11%. The pyrolytic C deposit prevents diffusion of C from the base C strips into the Si layer. The holes reduce development in the substrate of thermal stresses during cooling.