Patent ID: 11420902

Abstract:
A material includes a transparent substrate on which is deposited a stack of layers including n silver-based metal functional layers and n+1 dielectric sets of layers, with n≥3 and each silver-based metal functional layer being placed between two dielectric sets of layers. The dielectric set of layers located below the first silver-based metal functional layer starting from the substrate and the dielectric set of layers located above the last silver-based metal functional layer starting from the substrate each include a high-refractive-index layer, the value of the index≥2.15 at the wavelength of 550 nm; the value of the refractive index of at least one of the high-index layers≥2.40 at the wavelength 550 nm; and the value of the ratio of the optical thickness of each of the high-refractive-index layers to the optical thickness of the dielectric set of layers in which it is included is included between 0.25 and 0.55.