Patent ID: 7901736
Filing Date: 2011-03-08
Classification: C03C,C23C,G02B,H01L,Y10T

Abstract:
1. An Atomic Layer Deposition (ALD) method of manufacturing a material, said material comprising at least one layer of a first material (A), and at least one layer of a second material (B), materials A and B having at least one common interface, comprising carrying out the following at a deposition temperature of more than 150° C. and less than 450° C.: a) depositing by ALD a layer of material A comprising titanium oxide to a thickness of 2 to about 8 nm, b) depositing by ALD a layer of material B, selected from the group consisting of aluminium oxide, silicon oxide, and mixtures of these, to a thickness of 0.1 to 1.5 nm, using precursors selected from the group consisting of aluminium chloride, tris(tert-butoxy)silanol and tetra-butoxy silane, and c) repeating a) and b) at least once until a material of desired total thickness is obtained, to produce a material, the total effective refractive index of which is greater than 2.20 at a wavelength of 600 nm.