TRANSPARENT SUBSTRATE FOR PHOTONIC DEVICES

摘要

Transparent substrate (1) for photonic devices, comprising a support (10) and an electrode (11), said electrode (11) comprising a stack comprising a single metallic conduction layer (112) and at least one coating (110) having properties for enhancing the light transmission through said electrode, said coating (110) having a geometric thickness at least greater than 3 nm and at most less than or equal to 200 nm, said coating (110) comprising at least one light-transmission enhancement layer (1101) and being located between the metallic conduction layer (112) and the support (10) on which said electrode (11) is deposited, such that the optical thickness T01 of the coating (110) provided with light-transmission enhancement properties and the geometric thickness TME of the metallic conduction layer (112) are linked through the equation: TME = TME_o + Bsin(p*TD1/TD1_0)/n3 support where TME_o, B and TD1_0 are constants with TME_o having a value lying in the range from 10.0 to 25.0 nm, B having a value lying in the range from 10.0 to 16.5 and TD1_0 having a value lying in the range from 23.9 nD1 nm to 28.3 nD1 nm where nD1 represents the refractive index of the light-transmission enhancement coating at a wavelength of 550 nm, nsupport represents the refractive index of the support at the 550 nm wavelength.