Patent ID: 6589333
Filing Date: 2003-07-08
Classification: C30B,Y10S

Abstract:
Method for the manufacture of a substrate suitable for the subsequent growth of a single crystal diamond layer having a lattice constant aD, the method comprising:a) selecting one of an initial substrate of a mono-crystalline material having a fixed lattice constant aSi and an initial substrate having a layer comprising a mono-crystalline material having a fixed lattice constant aSi, b) manufacturing on said initial substrate one of b1) a strained silicon layer comprising silicon atoms arranged at lattice sites, with foreign material atoms incorporated by substitution at some of said lattice sites, there being a selected foreign atom concentration in said strained silicon layer, and b2) a layer system including a strained silicon layer in accordance with feature b1), c) transferring one of the strained silicon layer of feature b1) and said layer system of feature b2) into an at least partly relaxed state in which it adopts, by relaxation and through the selected foreign atom concentration, a lattice constant aSi(C) which satisfies the condition n.aSi(C)=m.aD â€ƒwhere n and m are different integers, with the one of said at least partly relaxed layer and at least partly relaxed layer system forming said substrate suitable for the epitaxial growth of said single crystal diamond layer.