Patent ID: 8137742

Claim:
A method of making an optical stack, the method comprising: laminating a stabilizing layer and a sub-stoichiometric layer; and producing an optical stack on a transparent glass substrate comprising the sub-stoichiometric layer in direct contact with the stabilizing layer, wherein the sub-stoichiometric layer consists of a homogenous sub-stoichiometric composition selected from the group consisting of oxides, nitrides, and oxynitrides, where the sub-stoichiometric composition comprises at least one element selected from the group consisting of first metal elements and semiconductor elements, and the sub-stoichiometric composition further comprises a sub-stoichiometric amount of at least one element selected from the group consisting of oxygen and nitrogen; the stabilizing layer comprises at least one element selected from the group consisting of second metal elements and semiconductor elements, and a stoichiometric amount of the at least one element selected from the group consisting of oxygen and nitrogen; and the sub-stoichiometric layer is from 10 to 100 nm thick and thicker than the stabilizing layer, wherein the first metal elements are selected from the group consisting of Mg, Y, Ti, Zr, Nb, Ta, W, Zn, Al, In, Sn, Sb and Bi; and the semiconductor elements are selected from the group consisting of Si and Ge.