Abstract: A transparent glass-type substrate coated with a stack of thin layers, constituting for example a conductive substrate for solar cells, for example photovoltaic cells, and a method for producing such a substrate. The stack of thin layers includes an underlayer, a conductive layer of which has a thickness between 200 and 1000 nm, an upper layer of which has a refractive index between 1.45 and 2.2 and a thickness between 5 and 300 nm. The substrate and the stack are such that the haze is lower than 5%, the transmission value between 450 and 850 nm minus the haze being greater than 70% or even 74%. The substrates combine contradictory electrical and optical properties of: high electrical conductivity, the presence of a buffer layer, and high light and solar transmission.