A matrix-array detecting device including a stack comprising a matrix array of detecting-element pixels, and an active matrix array comprising a network of rows and columns for controlling the pixels and produced on the surface of a substrate, wherein the detecting-element pixels comprise: a common top electrode; a detecting layer; and discrete bottom electrodes; the device comprising a metallic mesh that is connected to the top electrode; that includes pads comprising at least one metal portion, the pads being incorporated into the detecting layer; and that is positioned in correspondence with the network of controlling rows and columns. A process for fabricating the matrix-array detecting device is also provided.