Patent ID: 8193028
Filing Date: 2012-06-05
Classification: H01L,Y02E

Abstract:
1. A method for forming a thin film photovoltaic device, the method comprising: providing a transparent substrate comprising a surface region; forming a first electrode layer overlying the surface region; forming a copper layer overlying the first electrode layer; forming an indium layer overlying the copper layer to form a multi-layered structure; subjecting at least the multi-layered structure to a thermal treatment process in an environment containing a sulfur bearing species; forming a copper indium disulfide material from at least the thermal treatment process of the multi-layered structure, the copper indium disulfide material comprising a thickness of substantially copper sulfide material having a sulfur deficient region; subjecting the sulfur deficient region to a sulfide species; subjecting the sulfur deficient region to a treatment process during a time period; and forming a window layer overlying the copper indium disulfide material.