Saint-Gobain Glass France

Saint-Gobain Corporation

Charles Anderson

Ulf Blieske

Nicolas Nadaud

The subject of the invention is a transparent substrate () having at least one antireflection coating, made from a film (A) comprising multiple thin layers of alternately high and low refractive indexes. The multilayer film comprises, in succession, a high-index first layer (), having a refractive index nof between 1.8 and 2.3 and a geometrical thickness eof between 5 and 50 nm, a low-index second layer (), having a refractive index nof between 1.30 and 1.70 and a geometrical thickness eof between 5 and 50 nm, a high-index third layer (), having a refractive index nof between 1.8 and 2.3 and a geometrical thickness eof at least 100 nm, and a low-index fourth layer (), having a refractive index nof between 1.30 and 1.70 and a geometrical thickness eof at least 80 nm. This antireflection coating can be used in solar modules.

Transparent substrate comprising an antireflection coating

The subject of the invention is a transparent substrate (6) having at least one antireflection coating, made from a film (A) comprising multiple thin layers of alternately high and low refractive indexes. The multilayer film comprises, in succession: This antireflection coating can be used in solar modules.

A transparent substrate and methods of making a transparent substrate having, on at least one of its faces, an antireflection coating made of a multilayer stack of alternating thin layers of high and low refractive indices. Preferably, the thin layers are based on a dielectric material. At least one of the thin high-index layers comprises titanium oxide which is modified so as to reduce its refractive index to a value of at most 2.40, preferably to a value of at most 2.35.

Growing community of inventors

Courbevoie, France

Charles Anderson