TRANSPARENT GLASS SUBSTRATE COMBINED WITH TRANSPARENT ELECTRICALLY CONDUCTIVE LAYER HAVING IMPROVED ELECTRICAL PROPERTIES

摘要

The invention relates to a transparent glass substrate that is combined with a transparent electrically conductive layer that is capable of forming a photovoltaic module electrode and consists of a doped oxide. Said substrate differs in that it involves: taking, on a 2 cm x 2 cm surface, at least five images through atomic force microscopy of 10 μm x 10 μm (512 pixels x 12 pixels) of the surface of said transparent electrically conductive layer opposite said transparent glass substrate by means of an AFM tip having a radius of curvature equal, at most, to 10 nm; then for each of the five images, calculating, through bilinear interpolation, all the contour lines with a spacing of 1 nm at a supersampling rate of 4 points per pixel while only keeping the contour lines that are closed and define a region containing a single local maximum, with no local minimum. Said substrate moreover differs in that: the mean of the values obtained for the five images, from the mean isoperimetric ratio defined, for the contour line areas between 2000 nm² and 8000 nm², as the perimeter of said contour lines in the square divided by 4 times π times the area thereof, is at most equal to 1.17, and the mean of the values obtained for the five images, from the height distribution-type spacing, is between 20 and 200 nm. The invention also relates to a method for manufacturing one such substrate, as well as to a photovoltaic module, a shaped heating glass, a planar lamp electrode, and an organic light-emitting diode device that includes one such substrate.