LOW-EMISSIVITY COATING FOR A GLASS SUBSTRATE

The present invention relates to a glass substrate provided with a stack of thin coating layers formed by a first layer of anti-reflective dielectric material, with a refractive index of 1.65 to 2.65, located above the glass substrate. At least one structure of two layers formed by a first layer of an anti-reflective transparent dielectric material with a refractive index of 1.32 to 1.55, located in the bottom position, and a second layer of a metal functional layer with reflective properties in the infrared range, located in the top position, said structure being located above the first layer of anti-reflective dielectric material. A second layer of absorbent material forming an anti-corrosion barrier for protecting the metal functional layer against oxidation and corrosion. A third layer of an anti-reflective material, said layer being selected from a metal oxide with a refractive index of 1.32 to 1.55, a metal oxide with a refractive index of 1.65 to 1.95 or an aluminum-doped zinc oxide (AZO); and a fourth protective layer made of an anti-reflective material, for increasing the transmission of visible light and the scratch resistance of the substrate, having high transmission of visible light (60%), a solar transmission of less than 60%, a resistance of less than 10 per square and an emissivity of less than 0.10.