WERKWIJZE VOOR HET STROOMLOOS VORMEN VAN EEN KOPER- SULFIDELAAG OP EEN CADMIUMSULFIDELAAG VOOR HET VERVAAR- DIGEN VAN EEN KEERLAAGFOTOCEL.

摘要

1386226 Copper sulphide coating SOC ANON DE TELECOMMUNICATIONS 5 June 1973 [6 June 1972] 26651/73 Heading C1A A method for the controlled formation of a layer of copper sulphide on a cadmium sulphide substrate (e.g. in the form of a solar cell) comprises immersing the substrate and a substantially pure copper electrode in a solution of cuprous ions and maintaining the potential of the substrate constant with respect to and at least equal to that of the pure copper electrode. A suitable solution comprises 25 g. of CuI and 500 g. of KI in one litre of water, and optionally may contain a small amount of a reducing agent, e.g. hydrazine monobromide. The potential is maintained equal by connecting the CdS and the copper electrode directly, or the CdS may be kept positive relative to the copper by means of a battery.