Patent ID: 6933244
Filing Date: 2005-08-23
Classification: H01L,Y10S

Abstract:
1. A method for passivating a surface of a semiconductor structure, comprising: (a) providing III-V semiconductor material having a surface to be passivated; (b) producing an oxide layer upon the surface of the III-V semiconductor material to be passivated; (c) depositing, upon the oxide layer, a passivation interlayer of a material having the ability to intermix with the oxide layer so as to exchange oxygen, passivation interlayer material, and III-V semiconductor material therebetween to form graded layers of oxidized III-V and passivation interlayer material; and (d) depositing, upon the passivation interlayer, a passivation capping layer of a material having the ability to intermix with the oxide layer and passivation interlayer so as to exchange oxygen, passivation interlayer material, passivation capping layer material, and III-V semiconductor material therebetween to form graded layers of oxidized III-V, passivation interlayer material, and passivation capping layer material, the passivation capping layer material comprising Ga