Abstract: An infrared photodetector including a stack of layers on a substrate having an active area made of organic semiconductor materials capable of converting an infrared radiation into an electric signal and including, in said stack and/or on the substrate, a single layer at least partially filtering visible light.

Abstract: The invention concerns an optronic device (1), comprising: a glass substrate (2) having opposed and textured first and second surfaces (21, 22); an electrically conductive material (3) continuous and formed on the second surface (22) of the glass substrate; a photovoltaic sensor thin film (4) formed on the electrically conductive material (3); the texturing of the first surface (21) of the glass substrate is configured to have a weighted optical reflection in the visible spectrum of less than 3%; the texturing of the second surface (22) of the glass substrate is configured to diffuse the light transmitted from the substrate to the transparent electrode (3).

Abstract: Photobioreactor for culturing a photosynthetic microorganism, comprising: an enclosure comprising a light-collecting wall and defining a culture chamber for containing a culture medium containing at least the photosynthetic microorganism, the light-collecting wall being transparent to infrared radiation and to visible radiation, and an optical filter for filtering irradiation radiation directed toward the culture chamber, the optical filter being transparent to radiation in the visible and containing a thermochromic compound, the optical filter being transparent to infrared radiation at a temperature at least 10° C. below the transition temperature of the thermochromic compound and having an optical transmittance to infrared radiation of 20% or less at a temperature at least 10° C. above the transition temperature of the thermochromic compound.

Abstract: The invention relates to a scattering and conductive anti-reflection surface, comprising a continuous electrically conductive material of variable thickness deposited on a textured surface so as to render the assembly anti-reflective and scattering.

Abstract: An infrared photodetector including a stack of layers on a substrate having an active area made of organic semiconductor materials capable of converting an infrared radiation into an electric signal and including, in said stack and/or on the substrate, a single layer at least partially filtering visible light.

Abstract: Multilayer material comprising a zirconium-based substrate covered with a multilayer coating, the multilayer coating comprising metallic layers composed of identical or different substances chosen from chromium, a chromium alloy or a ternary alloy of the Nb—Cr—Ti system. Such a material has improved resistance to oxidation in accident conditions of a nuclear reactor. The invention also relates to a multilayer coating, a part composed wholly or partly of the multilayer material or of the multilayer coating, as well as the method for manufacturing the multilayer material such as for example a magnetron cathodic sputtering process.

Abstract: A textured reflector for a solar cell of thin film type is produced by deposition of a metal film on a support through openings of a mask. The mask is formed by a thin film formed by coplanar and preferably joined balls, the gaps between the balls forming the openings of the mask. The thin film is further advantageously formed by balls made from silica or from polymer material.

Abstract: This method for texturing a DLC coating comprises depositing a single layer of balls or spheres on the free surface of the DLC coating; dry-etching the DLC coating using oxygen plasma; and lastly, cleaning the surface of said coating by eliminating the balls or spheres.

Abstract: A textured reflector for a solar cell of thin film type is produced by deposition of a metal film on a support through openings of a mask. The mask is formed by a thin film formed by coplanar and preferably joined balls, the gaps between the balls forming the openings of the mask. The thin film is further advantageously formed by balls made from silica or from polymer material.

Abstract: Multilayer material comprising a zirconium-based substrate covered with a multilayer coating, the multilayer coating comprising metallic layers composed of identical or different substances chosen from chromium, a chromium alloy or a ternary alloy of the Nb—Cr—Ti system. Such a material has improved resistance to oxidation in accident conditions of a nuclear reactor. The invention also relates to a multilayer coating, a part composed wholly or partly of the multilayer material or of the multilayer coating, as well as the method for manufacturing the multilayer material such as for example a magnetron cathodic sputtering process.

Abstract: The invention relates to the use of a super-slippery thin-layer film or coating for enhancing the lubrication capacity of a part to be subjected to great friction and wear. The film of the invention for improving the lubrication capacity of parts to be subjected to important friction and wear includes at least: a layer (3) of a hard material selected from titanium nitride (TiN), chromium nitride (CrN), titanium carbide (TiC), chromium carbide (CrC), tungsten carbide (W2C) and tungsten carbide-carbon composites (WC/C), alumina (AI2O3), molybdenum sulphide (MoS2), and materials of the hydrogenated amorphous carbon type (a: CH), the layer including on one surface thereof a series of dips and protrusions; and a layer (4) of an oleophilic material. The invention can particularly be used in the field of mechanics.

Abstract: The invention relates to a substrate comprising at least one scattering film made of a transparent conductive oxide (TCO) and to a process for manufacturing such a substrate. It also relates to a solar cell comprising such a substrate. The substrate according to the invention comprises a layer of spherical particles made of a material chosen from dielectric and transparent conductive oxides, the layer being coated with a TCO film and the diameters of said spherical particles belonging to at least two populations of different diameters. The invention is applicable in particular to solar cells.

Abstract: The invention relates to a hydrogenated amorphous carbon coating and to a method for the production thereof. It also relates to devices having such a coating. The method of the invention consists in producing a hydrogenated amorphous carbon coating comprising at least two layers of hydrogenated amorphous carbon, each of said layers having chemical compositions and physical and mechanical properties that are identical, and with thicknesses that are identical or different. The coating of the invention finds many applications, in particular in the mechanical field for parts subject to considerable wear and rubbing problems. It may also be applicable, in particular, in the field of surgical implants and in the MEMS (microelectromechanical systems) field.

Abstract: A process for fabricating a silicon-based thin-film photovoltaic cell, applicable for example in the energy generation field. The fabrication process includes a) depositing a p-doped or n-doped amorphous silicon film, the X-ray diffraction spectrum of which has a line centered at 28° that has a mid-height width, denoted by a, such that 4.7°?a<6.0°, on a substrate.

Abstract: This method for texturing a DLC coating comprises depositing a single layer of balls or spheres on the free surface of the DLC coating; dry-etching the DLC coating using oxygen plasma; and lastly, cleaning the surface of said coating by eliminating the balls or spheres.

Abstract: A process for fabricating a silicon-based thin-film photovoltaic cell, applicable for example in the energy generation field. The fabrication process includes a) depositing a p-doped or n-doped amorphous silicon film, the X-ray diffraction spectrum of which has a line centered at 28° that has a mid-height width, denoted by a, such that 4.7°?a<6.0°, on a substrate.

Abstract: The invention relates to the use of a super-slippery thin-layer film or coating for enhancing the lubrication capacity of a part to be subjected to great friction and wear. The film of the invention for improving the lubrication capacity of parts to be subjected to important friction and wear includes at least: a layer (3) of a hard material selected from titanium nitride (TiN), chromium nitride (CrN), titanium carbide (TiC), chromium carbide (CrC), tungsten carbide (W2C) and tungsten carbide-carbon composites (WC/C), alumina (AI2O3), molybdenum sulphide (MoS2), and materials of the hydrogenated amorphous carbon type (a:CH), the layer including on one surface thereof a series of dips and protrusions; and a layer (4) of an oleophilic material. The invention can particularly be used in the field of mechanics.

Abstract: The invention relates to a hydrogenated amorphous carbon coating and to a method for the production thereof. It also relates to devices having such a coating. The method of the invention consists in producing a hydrogenated amorphous carbon coating comprising at least two layers of hydrogenated amorphous carbon, each of said layers having chemical compositions and physical and mechanical properties that are identical, and with thicknesses that are identical or different. The coating of the invention finds many applications, in particular in the mechanical field for parts subject to considerable wear and rubbing problems. It may also be applicable, in particular, in the field of surgical implants and in the MEMS (microelectromechanical systems) field.

Abstract: This method for producing a seal barrier for a micro component comprising a stack of two thin sealing layers involves forming a fusible interlayer between two sealing layers, said fusible interlayer having a melting temperature which is lower than that of the two sealing layers and melting said interlayer.

Abstract: The sulfidation resistance of a silver-base material coating is further improved by making a concentration gradient of silver, oxygen and of one or more oxidizable alloying elements that may be present in the material, from the free surface of the coating up to a depth comprised between 10 nm and 1 ?m and more particularly between 100 nm and 1 ?m. Thus, the coating comprises a stack of one main layer made from silver-base material and of one oxidized thin film. The thin film, with a thickness comprised between 10 nm and 1 ?m, thus presents a decreasing silver concentration gradient from the interface between the thin film and the main layer to the free surface of the thin film. Deposition of the coating on a support can be achieved by two successive physical vapor deposition steps, and more particularly by magnetron cathode sputtering.