Photovoltaic devices comprising an anti-reflective layer containing dispersed objects having areas with different refractive indices

• Main Authors: Gaud, Vincent, Louarn, Mélanie, Rouge, Fabien
• Format: Patent
• Language: English
• Published: 07.05.2019
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMICAL PAINT OR INK REMOVERS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CORRECTING FLUIDS; DIFFUSION TREATMENT OF METALLIC MATERIAL; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FILLING PASTES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PHYSICS; POLISHES; SEMICONDUCTOR DEVICES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; USE OF MATERIALS THEREFOR; WOODSTAINS

The present invention relates to photovoltaic devices which comprise: a semiconducting material able to ensure a photovoltaic effect when it is subject to electromagnetic radiation; a anti-reflective layer, transparent towards said electromagnetic radiation ensuring the photovoltaic effect, this anti-reflective layer containing, in the dispersed state, objects with dimensions of less than 5 microns, preferably less than 2 microns, said objects comprising at least two areas consisting of two different substrates, transparent towards said electromagnetic radiation and having distinct refraction indices, i.e.: a core having a first refractive index nC; and a layer surrounding the core, a so-called crust, having a second refractive index nE, distinct from the refractive index nC of the core, the ratio of the dimensions of the core to the dimensions of the core/crust assembly being comprised 1:1.5 and 1:5.