Method for Producing the Rear Contact Layer for CdTe Thin-Film Solar Cells

摘要

The present invention concerns a method for the manufacture of the first layer of a back contact layer for thin-layer solar cells in superstrate configuration. In the prior art, this layer is deposited as a compound, for example as a layer of Sb2Te3. In accordance with the invention, however, a tellurium-rich surface layer of the cadmium telluride layer is produced, on which a first material is deposited which is capable of forming an electrically conductive second material with tellurium and of producing the second material by reaction of the first material and tellurium in the surface layer. The second material forms the first layer of the back contact layer.

主权项

1. A method for the manufacture of a back contact layer for CdTe thin-layer solar cells in superstrate configuration, characterized in that a first back contact layer is produced by means of the following steps:
producing a tellurium-rich surface layer of the cadmium telluride layer, depositing a first material which is capable of forming an electrically conductive second material with tellurium on the tellurium-rich surface layer, and producing the second material by reacting the first material and tellurium in the surface layer.