Abstract: A photovoltaic cell includes transparent glazing substrate, protecting a thin-film multilayer including a film having photovoltaic properties; and two films forming electrodes, one the bottom electrode film and the other the top electrode film, placed on either side of the photovoltaic film, the bottom electrode film being a TCO including a zinc oxide substituted by an element selected from Al, Ga, In, B, Ti, V, Y, Zr and Ge or any combination thereof. The cell includes, between the substrate and the bottom electrode film, a succession of at least two films of dielectric materials, including a first film of a material forming a barrier to the alkali metals coming from the glazing substrate, especially during a tempering or annealing operation; and a second film including aluminum nitride AlN, gallium nitride GaN or a mixture thereof, the second film being in contact with the bottom electrode film.