Patent ID: 8785293

Claim:
A method of adapting a lattice parameter of a seed layer of a strained material, comprising: providing a structure including: a seed layer of strained material having a lattice parameter A 1 , a nominal lattice parameter A n , and a thermal expansion coefficient CTE3; a low viscosity layer; and an intermediate substrate having a thermal expansion coefficient CTE1; applying a heat treatment to relax the seed layer of the strained material; transferring the seed layer onto a support substrate having a thermal expansion coefficient CTE5; and selecting the intermediate substrate and the support substrate such that: A 1 <A n and CTE1≦CTE3 and CTE5>CTE1 or A 1 >A n and CTE1≧CTE3 and CTE5<CTE1; and epitaxially growing at least one epilayer having a lattice parameter A 3 on the seed layer after the transferring of the seed layer onto the support substrate.