Patent ID: 9428834
Filing Date: 2016-08-30
CPC Classification: B32B,C23C

Claim Text:
1. A method for forming an arrangement of two barrier layers on a substrate, comprising: forming a first ceramic barrier layer on the substrate, wherein the first ceramic barrier layer has a first surface and a second surface and the first surface is closer to the substrate than the second surface; modifying at least a portion of the second surface of the first ceramic barrier layer such that the second surface of the first ceramic barrier layer comprises a material different from the material of the first ceramic barrier layer below the second surface to introduce first nucleation sites on the second surface, including depositing a nucleation-promoting material onto the second surface, the first nucleation sites including the nucleation-promoting material; and forming a second ceramic barrier layer directly on the second surface of the first ceramic barrier layer without continuing all defects of the first ceramic barrier layer, wherein the second ceramic barrier layer is initiated at the first nucleation sites; wherein the first ceramic barrier layer and the second ceramic barrier layer together have enhanced barrier capabilities against gas and liquid as compared to two similar adjacent ceramic barrier layers formed without the modifying step to introduce nucleation sites.