Patent ID: 7662702
Filing Date: 2010-02-16
Classification: C30B,H01L,Y02E,Y02P

Abstract:
1. A method of forming a crystalline silicon layer on a face of a substrate, the face being microrough prior to forming the layer, comprising: providing a substrate, wherein the substrate comprises at least one material selected from the group consisting of a ceramic material, glass, a glass-ceramic material, mullite, alumina, and silicon nitride, and wherein a microroughness of a face of the substrate is higher than 2 rad/μm; depositing a layer of a dielectric on the face of the substrate by at least one method selected from the group consisting of spinning on the dielectric, flowing on the dielectric, and dipping on the dielectric, wherein a microroughness of a surface of the dielectric layer is less than 1 rad/μm; depositing a metal on the surface of the dielectric layer; oxidizing the metal; depositing silicon on the metal; annealing the metal and the silicon; and removing the metal, whereby a crystalline silicon layer on the dielectric layer is obtained.