Patent ID: 8586127

Claim:
A crystallisation method, comprising: depositing a thin film of a conductive crystalline material on a substrate; heating the substrate and the crystalline material deposited on the substrate to a first temperature for a time enabling internal strains present in the crystalline material to be relaxed; after the heating, subjecting the substrate and said crystalline material to a second temperature and to a uniform bending by placing the substrate on a bending bench, a quantity of bending and a difference between the first and the second temperature having values determined from elastic bending constants thermal deformations and thermal expansion coefficients to favour a particular crystallographic orientation of the crystalline material along an azimuth direction in relation to a direction normal to the substrate which is defined by the system of equations: { ( Q 1 ′ - 1 3 ) ⁢ ( β 1 - β 2 ) + ( Q 1 - 1 3 ) ⁢ ( β - β 2 ) = 0 ( Q 2 ′ - 1 3 ) ⁢ ( β 1 - β 2 ) + ( Q 2 - 1 3 ) ⁢ ( β - β 2 ) = 0 ( Q 3 ′ - 1 3 ) ⁢ ( β 1 - β 2 ) + ( Q 3 - 1 3 ) ⁢ ( β - β 2 ) = 0 where β 1 , β 2 , and β are total deformations underwent by the film in length, corresponding to a curvature related to the bending, width, and thickness directions in the film, and Q 1 , Q 2 , Q 3 , Q′ 1 , Q′ 2 , Q′ 3 are equal to q 1 2 , q 2 2 , q 3 2 , q′ 1 2 , q′ 2 2 , q′ 3 2 , respectively, where q 1 , q 2 , and q 3 are coordinates of unitary vectors (x 1 and a 2 ) oriented in said length and width directions, impressed in a reference (y 1 , y 2 , and y 3 ) of the crystal.