Abstract: The invention relates to a fluorescence collector for concentrating and converting solar radiation into electrical energy, which collector is constructed from a substrate and at least one polymer- or sol-gel layer as carrier structures for at least one sort of semiconducting nanoparticles and at least one fluorescent dye. The solar radiation is coupled into the collector, reflected internally and then emerges at a defined location at which a photovoltaic cell is disposed. By means of the latter, the conversion of solar into electrical energy is then effected.

Abstract: Information storage unit comprising a substrate with applied thereon a polymer layer (active polymer layer) which is polarisable by a focussed electron beam, the active polymer layer being a component of a multilayer, said multilayer comprising an active polymer layer of at least one to a maximum of fifteen electrically-insulating layers and at least one to a maximum of fifteen electrically conductive and/or semiconductive layers in an optional layer sequence, on condition that the active layer is disposed between at least one electrically-insulating layer and at least one conductive or semiconductive layer.