Patent ID: 8093686

Claim:
A process of obtaining a hybrid substrate comprising at least one active layer of Group III/N material intended for applications in the field of electronics, optics, photovoltaics or optoelectronics, which comprises: selecting a source substrate of Group III/N material having a hexagonal single crystal crystallographic structure with crystallographic axes of “a” and “c”; carrying out an implantation of He + helium ions into the source substrate through an implantation face which lies in a plane that is parallel or approximately parallel with the “c” crystallographic axis of the material, at an implantation dose equal to or greater than 1×10 16 He + /cm 2 to form a number of nanocavities defining a weakened zone inside the substrate at a controlled average implantation depth, with the weakened zone defining the active layer; and transferring the active layer from the source substrate by applying an overall energy budget which comprises a cavity growth thermal budget for causing the nanocavities to be transformed into larger cavities, and a complementary detachment energy budget for detaching the active layer from the source substrate.