304results about How to "Reduce reflectivity" patented technology

The invention discloses light gray low-emissivity coated glass for near-zero energy consumption buildings and a preparation method thereof, the light gray low-emissivity coated glass comprises a glass substrate and a composite metal film layer laminated on the glass substrate, and is coated glass with three metal silver film layers. According to the invention, one of the multiple composite metal film layers on the common colorless transparent float glass substrate reflects and interferes with light, so that the coated glass is light gray in the sun and has good decoration and energy-saving effects; the hollow glass is high in visible light transmittance, low in outdoor visible light reflectivity, low in solar energy transmittance and high in solar energy reflectivity, and can be made into hollow glass to achieve better energy-saving effects such as light control, heat insulation and the like, so that a building is closer to the nature and is fused with the nature.

The invention discloses a preparation method of low-radiation coated toughened glass, which comprises the following steps: sintering a target material, carrying out moisture removal and degassing pretreatment on glass, carrying out coating treatment and toughening treatment, and laminating a composite metal film layer on a toughened glass substrate to prepare the toughened coated glass with three metal silver film layers. According to the method disclosed by the invention, after a common glass substrate is plated with the composite metal film layers, toughening treatment is carried out, and after the toughening treatment, all the metal film layers reflect, interfere and refract light, so that the glass disclosed by the invention is light green (French green) in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects such as light control, heat insulation and heat preservation, enables buildings to be closer to the nature, is used for near-zero energy consumption buildings, and enables the buildings to meet the requirements of the national standard General Standard for Building Energy conservation and Renewable Energy Utilization.

The invention provides head-up display glass, a head-up display system and a vehicle, the head-up display glass comprises an outer glass plate, an inner glass plate and a middle layer clamped between the outer glass plate and the inner glass plate, the outer glass plate comprises a first surface and a second surface, and the inner glass plate comprises a third surface and a fourth surface. The middle layer is connected to the second surface and the third surface; the head-up display glass is provided with a display area, and the display area is used for reflecting projection light to form a head-up display image; the head-up display glass further comprises a functional reflecting layer and a sub-image eliminating layer, the functional reflecting layer has at least 10% of reflectivity for P polarized light incident at the incidence angle of 55 degrees, the surface roughness of the sub-image eliminating layer is larger than or equal to 11 nm, and the functional reflecting layer and the sub-image eliminating layer are not located on the same surface. In the thickness direction of the head-up display glass, the functional reflection layer at least covers the sub-image elimination layer, and the sub-image elimination layer at least covers the display area.

The invention provides a back contact solar cell, a preparation method thereof and a photovoltaic module. The back contact solar cell includes a crystalline silicon substrate and a first functional film. The back of the crystalline silicon substrate is provided with a first region and an isolation region, and the isolation region is arranged on one side of the first region. The first functional film is arranged on the first area in a stacked mode, the first functional film is provided with a light trapping part close to the isolation area, the light trapping part is provided with at least one of a light trapping valley and a light trapping peak, the light trapping valley shrinks in the direction from the groove opening to the groove bottom, and the side wall of the light trapping peak expands outwards in the direction from the top end to the bottom end. Wherein the shrunk light trapping valley and the expanded light trapping peak can reflect incident light towards the interior of the first functional film and the crystalline silicon substrate, so that a light trapping effect is achieved, the utilization rate of back incident light is increased, and the double-sided rate of the back contact solar cell is effectively increased; therefore, the efficiency of the back contact solar cell can be further improved.

The invention discloses a wire feeding type aluminum alloy laser cladding method based on pre-paved reinforced particles, which comprises the following steps: placing a rectangular mold on the surface of an aluminum alloy matrix, adding TiC particle powder, and scraping redundant powder by using a scraper; according to the method, the characteristic that the TIC powder is high in laser absorptivity is utilized, the TIC powder is flatly laid on the aluminum alloy matrix to reduce the laser reflectivity of the aluminum alloy, the consistency and stability of the coating in the cladding process are guaranteed through push-pull wire feeding, bubbles are reduced, and the laser cladding efficiency is improved. Good toughness and machinability of an aluminum alloy matrix are organically combined with high hardness and high wear resistance of a ceramic reinforced phase, meanwhile, an oxidation film on the surface of the aluminum alloy is broken by using swinging laser, the cladding coating is high in performance, ceramic particles are uniformly distributed, the processing method is simple and easy to implement, the high-performance aluminum alloy cladding coating is prepared, and the service life of the aluminum alloy cladding coating is prolonged. And the aluminum alloy surface wear resistance is obviously improved.

The invention relates to low-emissivity coated glass and a preparation method thereof. The low-emissivity coated glass comprises a glass substrate and a coating layer arranged on one side of the glass substrate, the coating layer comprises a base layer, a first seed layer, a first functional layer, a first barrier layer, a second functional layer, a second barrier layer, a second seed layer, a third functional layer, a third barrier layer and a top dielectric layer which are sequentially coated outwards from one side of the glass substrate. According to the invention, the barrier layer is controlled to adopt the metal simple substance with excellent compactness and stability and high melting point or the barrier layer is controlled to adopt the nitride, the silicon nitride, the silicon carbonitride or the silicon boron nitride and the like of the metal material, so that the function layer is protected from being oxidized, the radiation rate and the reflectivity are low, and the service life is long. And stability is achieved in the heat treatment process.

The invention provides a photovoltaic module gap synergistic film and a preparation method and application thereof.The photovoltaic module gap synergistic film comprises a bonding layer, a functional layer and a composite base material layer are sequentially arranged on the bonding layer from bottom to top, the bonding layer is a pressure-sensitive adhesive layer containing an activatable material, and the functional layer is a functional layer containing an ethylene copolymer with the melting point ranging from 70 DEG C to 120 DEG C; therefore, not only are the positioning bonding performance and the reflectivity of the product improved, but also the overall performance of the photovoltaic module is ensured, and meanwhile, the gap synergistic film of the photovoltaic module is torn off from the battery in a lossless manner so as to repair or recycle the photovoltaic battery.

The invention belongs to the technical field of optical communication, and relates to a flexible silicon-based photoelectric device, a receiving end and a visible light communication system. The flexible silicon-based photoelectric device comprises a back electrode layer, a hole transport layer, a P-type silicon light absorption layer, an electron transport layer and a front electrode layer. The valence band side energy difference between the electron transport layer and the P-type silicon light absorption layer is greater than the conduction band side energy difference; the conduction band side energy difference between the P-type silicon light absorption layer and the hole transport layer is greater than the valence band side energy difference; the forbidden bandwidth of the electron transport layer is greater than 3.0 eV. The front electrode layer comprises a plurality of grid electrodes which are separately arranged on the surface of the electron transport layer. According to the scheme provided by the invention, the heterojunction is formed on the surfaces of the two sides of the P-type silicon light absorption layer, so that the intensity of a built-in electric field is effectively enhanced, and the flowing speed of photo-generated electrons and photo-generated holes in the device is accelerated, thereby improving the response speed of the device; and meanwhile, the collection efficiency of electrons and holes is improved, so that the photoelectric conversion efficiency of a photoelectric device is improved.

The present invention discloses a method for reducing reflectivity during laser cladding of a copper alloy substrate, the method comprising the following steps: 1) roughening a target surface of a given copper alloy workpiece; 2) brushing volatile glue on the target surface after cleaning the target surface; 3) spreading nickel-based alloy powder on the target surface to completely cover the target surface; 4) shaking off the unattached nickel-based alloy powder and drying to form a transition layer; 5) preparing a target coating on the transition layer. The method according to the present invention has relatively low power consumption and relatively high efficiency.

The invention provides a crystalline silicon solar cell and a preparation method thereof. The preparation method comprises the following steps: carrying out anisotropic corrosion treatment on a silicon wafer, and carrying out first texturing; carrying out isotropic corrosion treatment on the silicon wafer; and carrying out anisotropic corrosion treatment on the silicon wafer, and carrying out second texturing. According to the invention, after the first time of texturing, the silicon wafer is subjected to isotropic corrosion treatment, and the bottom of the textured pyramid is corroded, so that the small pyramid at the tower bottom is removed, and finally, the textured pyramid tower bottom is modified through the second time of texturing, so that the textured uniformity is improved, the reflectivity is reduced, and the photoelectric conversion efficiency of the solar cell is improved.

The invention discloses a multifunctional film, a preparation method and application thereof and a light-transmitting panel. The multifunctional film comprises a multi-layer film and a hydrophobic film layer which are connected in an overlapped mode, the multi-layer film comprises a plurality of high-refractive-index film layers and a plurality of low-refractive-index film layers, and the high-refractive-index film layers and the low-refractive-index film layers are sequentially and alternately arranged in an overlapped mode. One side, connected with the hydrophobic film layer, of the multilayer film is the high-refractive-index film layer, and the hydrophobic film layer comprises an element Si, an element C and an element O. The multifunctional film disclosed by the invention can realize multiple effects of surface hydrophobicity, aging resistance, wear resistance, antireflection and the like of a product.

The utility model provides a photoelectric detector, TOF module and electronic equipment wherein the photoelectric detector includes: SPAD array, the SPAD array is used for generating photoelectric effect and converting optical signal into electrical signal, also includes: filter layer, be provided in the incident light surface of SPAD array, filter layer is used for filtering external incident light, be provided in the incident light surface of SPAD array, and be provided in the incident light surface of SPAD array. Only signal light with a specific wavelength is allowed to pass through and enter the SPAD array; the scattering layer is arranged on the light incident surface of the SPAD array, is positioned between the light filtering layer and the reflecting layer, and is used for changing the incident angle of the signal light in the SPAD array; the reflecting layer is arranged on the non-incident surface of the SPAD array and is used for reflecting the signal light incident into the SPAD array to obtain large-angle reflected light; and the light filtering layer is also used for preventing the large-angle reflected light from passing through and being emitted to the outside, so that the large-angle reflected light is reflected back to the SPAD array. According to the utility model, the photoelectric detector performance with high PDE and low reflectivity can be realized.

The invention discloses an anti-reflection temperature-control photovoltaic panel coating and a preparation method thereof. The anti-reflection temperature-control photovoltaic panel coating is prepared from the following components: 146 to 156 parts of segmented copolymer, 230 to 245 parts of double-layer shell hollow nano particles and 15 to 17 parts of aminopropyl trimethoxy silane, the block copolymer is a triblock copolymer of 48-52 parts of thiolactone acrylamide, 90-94 parts of perfluorooctyl ethyl acrylate and 8-10 parts of methyl methacrylate, the inner layer of the double-layer shell hollow nanoparticle is indium tin oxide, and the outer layer of the double-layer shell hollow nanoparticle is silicon dioxide. The coating provided by the invention can improve the light transmittance, also significantly enhances the heat dissipation performance of the photovoltaic panel, and significantly improves the power generation efficiency of the photovoltaic panel.

The invention is applicable to the field of photovoltaic technology, and provides a monocrystalline silicon wafer, a textured surface preparation method of the monocrystalline silicon wafer and a solar cell, the monocrystalline silicon wafer comprises two opposite surfaces, and at least one of the two surfaces has a textured surface structure; the suede structure comprises a plurality of pyramid-like structures, a plurality of layers of concave surface textures surround the pyramid-like structures, and the lateral edge shape of each pyramid-like structure is one or more of continuous multiple sections of inwards-concave arcs or inwards-concave angles. According to the monocrystalline silicon wafer, the textured surface preparation method of the monocrystalline silicon wafer and the solar cell provided by the invention, the textured surface structure on at least one surface of the monocrystalline silicon wafer is set as the pyramid-like structure surrounding the multiple layers of concave textures, so that the reflectivity of sunlight can be reduced, and the light absorption can be increased.

The invention provides a transcranial light adjusting method and system based on a laser light source and transmitting energy through an optical fiber bundle, relates to the technical field of physiotherapy, and mainly comprises a power supply, a controller, a laser, an optical fiber coupler, the optical fiber bundle, a lens group and the like. The optical fiber coupler couples laser output by the laser into the incident end of the optical fiber bundle; the emergent end of the optical fiber bundle is set as one or more sub optical fiber bundles, and the tail end of each sub optical fiber bundle is selectively butted with one lens group; when the emergent end of the optical fiber bundle is provided with a plurality of sub optical fiber bundles, the plurality of sub optical fiber bundles are respectively and correspondingly arranged at the back of the prefrontal lobe, the belly of the prefrontal lobe, the temporal lobe, the apical lobe and other physiotherapy positions which are effective for light; and when the tail ends of the plurality of sub-optical fiber bundles are not butted with the lens group, the emergent end of each sub-optical fiber bundle is set as an optical fiber array, and the optical fiber array is embedded into the light supply effective head position and is in contact with the scalp, so that the absorption rate and the reflectivity of the hair to near-infrared light are reduced.

The hardening liquid for the PMMA base material comprises a bifunctional polyurethane acrylate oligomer, a hexa-functional polyurethane acrylate oligomer and the like, the hardening liquid is coated on the PMMA base material to form an optical film, the hardening liquid and the PMMA base material have good adhesive force, and hardness, low reflectivity and low warpage are considered.

The invention belongs to the field of protective films, and relates to a high-transparency base film for a protective film and a preparation method of the high-transparency base film. The base film for the protective film comprises a support body and a protective film coating layer, wherein the protective film coating layer is coated on at least one surface, in contact with air, of the support body. The protective film coating contains a conductive material, modified acrylic resin, a cross-linking agent and deionized water, so that the protective film coating can be coated on a base material to form a film uniformly. Therefore, by utilizing the synergistic effect of the water-based conductive material and the modified acrylic resin under the online coating process, the surface resistance of the prepared base film coating for the protective film can reach 104-1011 omega, and the protective film has excellent and stable antistatic property and high transparency.

The invention relates to a solar cell, a manufacturing method thereof and a photovoltaic module, and the manufacturing method of the solar cell comprises the steps: providing a silicon wafer with a suede structure; a first film layer is formed on the side, where the suede structure is located, of the silicon wafer, the first film layer covers the surface of the suede structure, the first film layer comprises a first sub-part located at the bottom of a groove of the suede structure and a second sub-part located outside the bottom of the groove of the suede structure, and the thickness of the first sub-part is larger than that of the second sub-part; and etching the first sub-part at the bottom of the groove of the suede structure so as to reduce the thickness of the first sub-part. Therefore, a good suede structure can be formed on the surface of the side, away from the silicon wafer, of the first film layer, reflection of photons by the surface of the side, away from the silicon wafer, of the first film layer can be reduced, and the conversion efficiency of the solar cell can be improved.

The invention is applicable to the field of photovoltaic technology, and provides a monocrystalline silicon wafer, a textured surface preparation method of the monocrystalline silicon wafer and a solar cell. The monocrystalline silicon wafer comprises two opposite surfaces, wherein at least one of the two surfaces is provided with a suede structure; the suede structure comprises a plurality of pyramid-like structures, and each pyramid-like structure comprises at least one cone top, at least four side edges and at least four side surfaces; squamous texture structures are distributed on part of the side surfaces; the angular texture structures are arranged along part of the side edges and extend from the side edges to the two side faces connected with the side edges. According to the monocrystalline silicon wafer provided by the invention, the plurality of pyramid-like structures are used as the textured structures on at least one surface, so that the sunlight reflectivity can be reduced, and the photoelectric conversion efficiency of a solar cell can be improved.

The invention relates to a display panel which comprises a first substrate and a second substrate which are oppositely arranged, the second substrate is an array substrate, the first substrate comprises a substrate, and an anti-reflection layer is arranged on the side, facing the second substrate, of the substrate. The invention further relates to an optical module and a display device. The display panel comprises a first substrate and a second substrate which are oppositely arranged, the second substrate and an array substrate, an anti-reflection layer is arranged on the first substrate, the reflectivity of the display panel is reduced, then reflected stray light is reduced, and the picture purity is improved.

The invention relates to the technical field of optical thin films, and particularly discloses a preparation method of a super-hydrophobic optical thin film capable of being applied to different wavelengths, and the preparation method comprises the following steps: S1, carrying out surface cleaning, surface polishing and surface cleaning on a glass substrate, and then sputtering and depositing a silicon oxide film to obtain deposited glass; s2, performing metal copper fused deposition on the surface of the deposited glass, and then performing annealing treatment and nickel gun purging to obtain a semi-finished product; and finally, performing nano dry etching to obtain a finished product. The film has the advantages of hydrophobic effect, low reflectivity and high transmissivity.

The invention provides a semiconductor gain chip. The semiconductor gain chip comprises an N-surface metal layer, a substrate, an N-type buffer layer, an N-type waveguide layer, an N-type limiting layer, an active region, a P-type limiting layer, a P-type waveguide layer, a P-type contact layer, a P-surface electrical isolation layer and a P-surface metal layer which are stacked in sequence, a preset area of the P-type waveguide layer is prepared into a ridge waveguide structure and comprises a straight waveguide area and an inclined waveguide area, the P-type contact layer covers the ridge waveguide structure and ridge platforms on the two sides of the double grooves, the P-face electric isolation layer covers the two sides of the ridge waveguide structure, the double grooves and the ridge platforms on the two sides of the double grooves, and the P-face metal layer covers the P-type contact layer and the P-face electric isolation layer. The straight waveguide area reduces transmission loss in the light transmission process and increases the light output power of the chip. Triangular side edge structures are further arranged on the two sides of the straight waveguide area and the inclined waveguide area, the diffraction loss of the gain chip in the optical transmission process is increased through the side edge structures, optical oscillation is reduced, the reflectivity of the chip is reduced, and lasing is restrained.

The invention discloses an optical waveguide structure and a preparation method thereof, and a head-mounted display device, and relates to the technical field of optical waveguides, and the optical waveguide structure comprises an optical waveguide substrate; the optical waveguide substrate comprises a grating area, and a grating structure in the grating area is formed by cured imprinting glue; a non-grating area, except the grating area, on the optical waveguide substrate is a glare suppression area, and the optical waveguide substrate in the glare suppression area is set as follows: a, the surface of the optical waveguide substrate is not provided with impressing glue, or b, the surface of the optical waveguide substrate is provided with impressing glue, and at least partial area of the impressing glue is also provided with a first glare suppression layer; the first glare suppression layer is used for reducing the reflectivity of a non-grating area of the optical waveguide structure. Therefore, the glare effect of the existing optical waveguide structure is suppressed.

In a method for generating a textured surface of a semiconductor layer, a surface of the semiconductor layer is etched with a first alkaline etching solution to generate a surface of the semiconductor layer having a pyramid-like texture. The surface having the pyramid-like texture is then etched with a second alkaline etching solution different from the first alkaline etching solution to remove material from the pyramid-like texture, thereby reducing a height difference between a peak and an adjacent valley of the pyramid-like texture. A method for manufacturing a tandem solar cell further comprises generating a first solar cell structure produced in this way having tandem solar cells with textured surfaces, and generating a second solar cell structure in series with solar cells on the side of the first solar cell structure on which the textured surface is arranged.

The invention provides laminated glass and a head-up display system. The laminated glass comprises an outer glass plate, an inner glass plate, a bonding layer and a reflecting coating. And the reflecting coating is arranged on the second surface or the third surface of the laminated glass and is used for reflecting the P polarized light. And measured from one side of the fourth surface, the laminated glass has the minimum reflectivity for P polarized light which is incident at an incident angle of 65 degrees and has the wavelength in the range of 450-650 nm, and the minimum reflectivity is greater than or equal to 13%. And measured from one side of the first surface, the laminated glass has a reflection color Lab value for visible light which is incident at at least one incidence angle of 55 degrees, 60 degrees, 65 degrees, 70 degrees, 75 degrees and 80 degrees and has the wavelength in the range of 380 nm to 780 nm, and a and b values meet the following conditions:-2 < = a < = 2,-2 < = b < = 2. The laminated glass and the head-up display system provided by the invention have good head-up display and appearance neutral color effects.

The invention relates to black aluminum oxide ceramic and a manufacturing method thereof, and the manufacturing method of the black aluminum oxide ceramic comprises the following steps: (1) weighing 800-1200 parts by weight of aluminum oxide, 13-17 parts by weight of cobalt oxide, 21-29 parts by weight of iron oxide and 14-22 parts by weight of manganese oxide, adding a solvent and a dispersant, and carrying out ball milling dispersion; (2) adding a binder and a plasticizer into the product obtained in the step (1), and then carrying out ball milling dispersion; (3) carrying out tape casting on the slurry obtained in the step (2) to obtain a green body; (4) the green body in the step (3) is subjected to punching and glue discharging; and (5) sintering to obtain the black alumina ceramic. The black aluminum oxide ceramic disclosed by the invention has excellent heat-conducting property, breaking strength and dielectric strength and low visible light reflectivity.

[Problem] The objective of the present invention is to enable improved power generation efficiency as well as a reduction of a site area, and to enable increasing the amount of power generation whilst reducing costs such as construction and maintenance costs. Moreover, the objective of the present invention is to provide a reflector for solar power generation system with excellent weather resistance. [Solution] The present invention is provided with a plurality of solar power generation panels 2 installed via trestles 3, where an upper surface of power generation surface 6 of the panels 2 faces the sunlight incidence direction. The solar power generation panels 2 comprise double-sided incidence-type solar power generation panels provided with power generation surfaces 6 and 12 on both the upper and lower sides. A light passage space 13 is provided below a lower surface of a power generation surface 12. The present invention comprises a reflector 4 laid so as to cover a site ground 7 underneath the solar power generation panels 2 and the periphery thereof. The reflector 4 is provided with a reflecting layer 14 comprising a sheet material with a highly light-reflective colour where the surface side facing the lower surface of power generation surface 12 reflects directly incident light of sunlight and scattered light of sunlight. The reflector 4 is further provided with a weed barrier layer 15 comprising a weed barrier sheet material where a back surface side faces and is in contact with the site ground 7. The reflector 4 is integrally formed by lamination of the reflecting layer 14 and the weed barrier layer 15.

The purpose of the present invention is to provide an EUV photomask blank and an EUV photomask which have high resistance to hydrogen radicals, low EUV reflectance, and a high OD value. A reflective mask blank (10) according to an embodiment of the present invention is provided with at least a substrate (1), a multilayer reflective film (2), a cover layer (3), and a low-reflection part (5) in which a first absorption film (51) having high hydrogen radical resistance and a second absorption film (52) having high hydrogen radical resistance are alternately laminated. The extinction coefficient of the first absorption film (51) is different from the extinction coefficient of the second absorption film (52), or the refractive index of the first absorption film (51) is different from the refractive index of the second absorption film (52), and the extinction coefficient of the second absorption film (52) with respect to EUV light is 0.04 or more.

This invention belongs to the field of reaction chamber technology, specifically relating to an ultraviolet optical cavity reaction chamber module for an air treatment device. The cavity body defines an internal chamber and has an inlet opening and an outlet opening, which are arranged in series with an external airflow passage. One or more internal surfaces of the cavity body are reflective surfaces, the shape of which causes the internal geometry of the cavity body to form an optical cavity. This invention allows light emitted from a region inside the cavity to be repeatedly reflected on an elliptical surface, and to be reflected multiple times within the cavity before reaching the inlet or outlet opening. Simultaneously, the geometric discontinuities at the internal seams minimize the impact on overall optical performance. This invention reduces direct exposure to ultraviolet radiation from the outside of the module and converts intercepted photons into an additional air purification mechanism. Furthermore, the photocatalytic layer does not significantly reduce the reflectivity of the main optical cavity walls.

The utility model discloses a display substrate and a display device. The display substrate comprises a substrate; the driving layer is positioned on one side of the substrate and is provided with a plurality of conductive bonding pads; the light absorption layer is located on the side, away from the substrate, of the driving layer, the orthographic projection of the light absorption layer on the substrate and the orthographic projection of the driving layer on the substrate are overlapped, the light absorption layer is provided with a plurality of first via holes corresponding to the plurality of conductive bonding pads, and the orthographic projection of the first via holes on the substrate and the orthographic projection of the corresponding conductive bonding pads on the substrate are overlapped; the light-emitting units are located on the side, away from the substrate, of the light absorption layer and electrically connected with at least part of the conductive bonding pads through the first via holes; the display substrate further comprises a light transmitting layer and a base material layer which are located on the side, away from the substrate, of the light absorbing layer and sequentially arranged in a stacked mode, the light transmitting layer and the base material layer are continuously distributed film layers, and the light transmitting layer is located between the adjacent light emitting units and located on the side, away from the substrate, of the light emitting units. The display substrate has low reflectivity and high transmittance at the same time, and the application scene is wider.