The invention relates to an element that can collect light, including a first substrate serving as a cover-forming window and a second supporting substrate, said substrates trapping, between two electrode-forming conducting layers, at least one functional layer based on an absorbing material, enabling light to be converted into electric power. The invention is characterised in that the lower face of the second substrate is provided with a plurality of profile sections (17, 18) disposed parallel to one of the sides of the element.