Method for manufacturing a copper-free CdTe based thin film solar cell device

Abstract

A method for manufacturing a copper-free CdTe based thin film solar cell device, comprising the following steps: a) providing a substrate at least comprising a front electrode, b) depositing a CdTe based absorber layer, c) performing an activation treatment, d) applying a X-halogen to the CdTe based absorber layer, wherein X is selected out of a group consisting of P, As, Sb and V; e) performing a thermal treatment after step d) and f) depositing a back contact, characterized in that, the thermal treatment in step e) is performed before step f) and at temperatures in the range of 40° C. to 120° C. in inert atmosphere or vacuum for a duration in the range of 10 minutes to 60 minutes.

Dependencies are inferred from the claim text.