Patent ID: 8564019
Filing Date: 2013-10-22
Classification: H01L

Abstract:
1. A heterostructure for use in at least one of an electronic device, an optoelectronic device, an optic device, and a photovoltaic device, the heterostructure comprising: a mechanical support substrate; a thin film of crystalline III/N semiconductor material in an at least partially relaxed state; a plastically deformed strain relaxation layer comprising a crystalline material, the strain relaxation layer interposed directly between the mechanical support substrate and the thin film of crystalline III/N semiconductor material, the crystalline material of the strain relaxation layer being plastically deformed by a heat treatment at a relaxation temperature at which the crystalline III/N semiconductor material of the thin film elastically deformed to at least partially relax the thin film, a thickness of the strain relaxation layer being at least equal to a length of the elastic deformation of the thin film; and an active layer epitaxially deposited on the at least partially relaxed layer of crystalline III/N semiconductor material of the thin film.