title: Kind of broad-band photonic valve and its application to silicon solar cells.
abstract: We investigate the dual optical behaviour of a photonic grating interface presenting a more or less important index contrast, showing either efficient broadband reflectivity, either high transmittance within the same spectral window, depending on the direction of the incident light. This behaviour is reminiscent of a diode one and could find interesting applications. A typical example is given for thin crystalline silicon solar cells where the rear side is directly nano-textured to trap light without metal reflector (bifacial device), well compatible with an integration in a photovoltaic module.
authors.affiliation: CEA, LITEN, INES, Photovoltaic Cells Laboratory, 50 avenue du Lac Leman, 73377 Le-Bourget-du-Lac, France. jerome.le-perchec@cea.fr
authors.forename: J
authors.initials: J
authors.lastname: Le Perchec