Patent ID: 7776714
Filing Date: 2010-08-17
Classification: H01L

Abstract:
1. A process for obtaining a thin layer made of a first material on a substrate made of a second material called a final substrate, the process comprising, in the order as hereinafter set forth: bonding a thick layer of a first material by one of its main faces on the final substrate at an interface followed by implanting gaseous species in the thick layer of the first material to create a weakened zone delimiting said thin layer between the interface and the weakened zone, or implanting gaseous species in a thick layer of a first material to create a weakened zone followed by bonding said thick layer of said first material by one of its main faces on the final substrate at an interface thereby delimiting said thin layer between the interface and the weakened zone; depositing a layer of a third material to form a self-supporting layer on a free face of the thick layer made of the first material; and fracturing the structure comprising the final substrate, the thick layer of the first material and the layer of the third material at the weakened zone to supply the substrate supporting said thin layer.