Glass substrate coated with a high-index layer under an electrode coating, and organic light-emitting device comprising such a substrate

摘要

A glass substrate including a first face and a second face opposing the first face, the substrate including, above the second face, an electrode layer which includes at least one electrically conducting layer, wherein the substrate includes, between the second face and the electrode layer, at least one layer of vitreous material having an index in the range from 1.7 to 2.4 and including from 40% to 60% by weight of bismuth oxide Bi2O3 and from 5% to 30% by weight of ZnO.

主权项

1. A glass substrate comprising a first face and a second face opposing the first face, said substrate comprising, above the second face, an electrode layer which comprises an electrically conducting layer, wherein said substrate comprises, between the second face and the electrode layer, a plurality of layers of vitreous material each having a different index, a layer of vitreous material disposed in the direction of said second face of the substrate having an index lower than that of another layer of vitreous material disposed in the direction of said electrode layer, wherein a first layer of vitreous material of the plurality of layers of vitreous material has an index in the range from 1.7 to 2.4 and comprises from 40% to 60% by weight of bismuth oxide Bi2O3 and, from 5% to 30% by weight, of ZnO and wherein a second layer of the vitreous material of the plurality of layers of vitreous material is different from the first layer of vitreous material and comprises from 5% to 30% by weight of ZnO.