Patent ID: 6136667
Filing Date: 2000-10-24
Classification: H01L,Y10S

Abstract:
A process for fabricating a device comprising the steps of:selecting a first single crystal substrate having a first crystal lattice and a second single crystal substrate having a second crystal lattice different from the first crystal lattice wherein the second substrate has at least one single crystal device layer formed thereon;cleaning the first surface of the first single crystal substrate and the single crystal device layer,placing the cleaned first surface in physical contact with the cleaned single crystal device layer for a duration sufficient to obtain a bond of an attractive force between the cleaned first surface and the cleaned single crystal device layer;first heating at a low temperature of about 30.degree. C. to about 90.degree. C. for a duration of about 10 minutes to about 30 minutes the bonded first surface and single crystal device layer to release gas entrapped by the first single crystal substrate or the single crystal device layer;removing the second substrate, leaving the single crystal device layer bonded to the first single crystal substrate; andheating at a high temperature the first single crystal substrate to increase the strength of the bond between the first single crystal substrate and the single crystal device layer bonded thereto.