Coated articles having a Roy coating with a doped silver protective layer to protect the silver based IR reflective layer (s), and methods of making the same

摘要

The coated article includes a low emissivity (low-E) coating supported by a glass substrate. The Roy coating comprises at least one silver (Ag) based infrared (IR) reflection provided adjacent to and in contact with at least one metallic or substantially metallic doped silver protective layer to improve the chemical durability properties of the Roy coating. Layer (s). The silver based IR reflecting layer and the adjacent doped silver protective layer are part of a low emissivity (roy) coating and may be interposed between at least transparent dielectric layers. In order to further improve the durability of the Roy coating, a barrier layer comprising Ni and / or Cr may be provided in direct contact with it on the doped silver protective layer.