Patent ID: 9659777
Date: 2017-05-23
CPC Classifications: H01L

Claim:
1. A process for stabilizing a bonding interface located within a structure for applications in the field of at least one of electronics, optics and optoelectronics, the process comprising: forming an energy conversion layer on an active layer of the structure, the active layer comprising a semiconductor material, the structure comprising an oxide layer buried between the active layer and a receiver substrate, the structure including a bonding interface between the active layer and the receiver substrate having been obtained by molecular adhesion; and irradiating the structure with a light energy flux provided by a laser, so that this flux, directed toward the structure, passes through the receiver substrate, through the oxide layer, and through the active layer, and is absorbed by the energy conversion layer and converted to heat in the energy conversion layer, the heat diffusing from the energy conversion layer toward the bonding interface through the active layer, and stabilizing the bonding interface by thermally treating the bonding interface without heating the oxide layer beyond a melting point of the oxide layer and without heating the active layer beyond a melting point of the active layer; wherein a fluence of the laser and a material constituting the energy conversion layer are chosen such that the buried oxide layer is heated to a temperature above 1200° C.