1256 results about "Light absorbance" patented technology

A light absorber 10 has a transmission spectrum satisfying the following requirements (I), (II), (III), (IV), and (V) at an incident angle of 0°. The light absorber 10 has a haze less than 0.20%. (I) An average transmittance TA0deg(460-600) is 75% or more. (II) A shorter cut-off wavelength λH0deg(s) is in a range of 390 nm to 450 nm. (III) A longer cut-off wavelength λH0deg(L) is in a range of 600 nm to 680 nm. (IV) An average TA0deg(300-380) is 1.2% or less. (V) An average TA0deg(750-1000) is 1.2% or less.

An optical detector system providing electrical output signals. The system includes an apertured surface and a transparent window, with a metasurface on the window's opposite side. The metasurface imparts spatially varying phase delay and / or amplitude or polarization modulation to deflect ILR based on their angle of incidence, producing exiting light rays. These rays are detected by a two-dimensional tetralateral position-sensing detector (TLD) with a single resistive photo-absorption layer and four electrodes. The TLD generates X-Y position signals proportional to the azimuth and elevation of the incoming ILR. A computer may be included to calculate these angular values from the position signals.

Disclosed in the present application is a photovoltaic module, comprising a reflective structure and a cell string group, wherein the cell string group comprises a plurality of cells, and gaps are provided between the plurality of cells; the orthographic projection of the reflective structure on the cell string group covers at least the gaps between the plurality of cells; and the reflective structure comprises a first reflective layer close to the cells and a second reflective layer stacked with the first reflective layer, the first reflective layer is an organic material layer, and the second reflective layer is a metal layer. In the embodiments of the present application, infrared light that is incident on the gaps between the plurality of cells is reflected by the reflective structure, so that the infrared light re-irradiates the cells, enabling the cells to absorb the infrared light and convert same into electric energy, thereby increasing the generation power of the photovoltaic module.

A light absorption probe includes an arm segment, a main segment located at one side of the arm segment, a testing segment connected to another side of the arm segment, and a light absorption coating layer. The main segment has a soldering end portion and an extending end portion respectively located at two opposite sides thereof along a predetermined direction. The testing segment has an upright shape along the predetermined direction and includes a pinpoint portion and an upright portion that connects the pinpoint portion and the arm segment. The light absorption coating layer covers the upright portion, and the pinpoint portion is exposed from the light absorption coating layer. Through the light absorption coating layer, the testing segment only forms an observation point at the pinpoint portion in an observation process of a detection apparatus.

The invention provides a solar seawater desalination photothermal conversion efficiency optimization method and system based on machine learning, and the method comprises the steps: firstly collecting the solar spectrum distribution data, seawater turbidity spectrum data, real-time heat flow data and semiconductor nanomaterial data of a target sea area; and constructing a material spectrum mapping library based on the light absorption characteristics of the nano material. Through coupling analysis of a solar spectrum and a seawater turbidity spectrum, an environmental constraint condition is formed, a Bayesian optimization model is combined with a material spectrum mapping library and real-time heat flow data, and an optimal nano material mixing ratio is generated under environmental constraint. Then, the interface evaporation rate is predicted through the deep residual network, an optimal material morphology configuration scheme is obtained, and finally the morphology configuration is applied to semiconductor nanomaterial preparation. The photo-thermal conversion efficiency of the solar desalination system in the high-turbidity seawater environment is improved.

The invention relates to the technical field of photovoltaic power generation, and discloses a photovoltaic power generation panel supporting device convenient for angle adjustment, which comprises a base, the top of the base is fixedly connected with a platform, the top of the base is fixedly connected with a motor, the output end of the motor is fixedly connected with a cross plate, and the top of the cross plate is fixedly connected with a motor. The inner wall of the cross-shaped plate is rotatably connected with a connecting plate, the inner wall of the connecting plate is fixedly connected with a groove plate, and the inner wall of the cross-shaped plate is provided with a supporting mechanism used for supporting the groove plate. According to the invention, the photovoltaic panel rotates, the power generation efficiency can be improved, the position of solar energy can be tracked, the photovoltaic panel can be always kept vertical to solar rays, and the light absorption efficiency is improved; the surface of the photovoltaic panel can receive sunlight more uniformly by rotating the photovoltaic panel, the angle adjusting state of the photovoltaic panel can be further improved, the use efficiency of the device is improved, and the sunlight conversion power generation amount of the photovoltaic panel can be increased.

The invention relates to the technical field of photovoltaic power generation, and particularly discloses a photovoltaic power generation energy storage equipment detection device which comprises a chassis, a lifting frame and a water tank are installed on the left side and the right side of the upper surface of the chassis respectively, a controller is installed on the upper surface of the water tank, and water supply of the water tank is controlled through the controller. A telescopic mechanism controlled by a controller is installed at the top of the lifting frame, the lifting frame can change the telescopic direction of the telescopic mechanism, and a scratch detection mechanism and a stability detection mechanism are installed at the output end of the telescopic mechanism from front to back. Pollutants such as dust can be effectively removed, the scratch detection definition of the camera is improved, the light absorption efficiency of the photovoltaic panel can be recovered, the operation pressure can be adaptively adjusted, the problem of excessive polishing or incomplete cleaning caused by fixed pressure of a traditional device is solved, accurate detection of the installation stability of the photovoltaic panel is achieved, and the detection efficiency of the photovoltaic panel is improved. The looseness degree of the assembly can be quantitatively reflected, and workers can conveniently conduct reinforcement and adjustment in time.

The embodiment of the present disclosure provides an optical transceiver and a manufacturing method thereof. The manufacturing method comprises the following steps: providing a substrate, wherein the substrate comprises a substrate, a buried oxygen layer and a lithium niobate layer which are sequentially stacked; the substrate comprises a light modulation area and a light detection area; etching the lithium niobate layer located in the light modulation area to form a thin film lithium niobate waveguide; removing the lithium niobate layer and part of the buried oxygen layer located in the light detection area to form a groove; the bottom of the groove exposes the substrate; forming a light absorption layer in the groove; wherein the thin film lithium niobate waveguide is used for modulating an optical signal and outputting the modulated optical signal; and the light absorption layer is used for detecting the modulated optical signal and converting the modulated optical signal into an electrical signal.

The utility model relates to the technical field of optical communication, in particular to a waveguide terminator and an optical module.The waveguide terminator comprises an optical absorber and a transmission waveguide which are stacked and arranged at intervals; wherein the transmission waveguide comprises a first waveguide section and a second waveguide section, and the second waveguide section is located in a projection area of the light absorber and used for diverging a light field. One end of the first waveguide section is connected with the second waveguide section, and the other end of the first waveguide section extends out of the projection area of the light absorber and is used for transmitting externally input incident light to the second waveguide section. And the included angle between the tangent line of the first waveguide section at the boundary of the projection area of the light absorber and the boundary is smaller than 90 degrees, so that a small amount of light reflected at the boundary of which the refractive index suddenly changes can enter the cladding to be dissipated, additional return loss is avoided as far as possible, and the return loss of the optical chip can be further reduced.

The invention discloses a method for preparing a perovskite solar cell based on a nanoimprint technology, which belongs to the technical field of solar cell devices, and comprises the following steps: preparing a PDMS (Polydimethylsiloxane) soft film with a nano conical column structure on the surface, and then carrying out thermal nanoimprint on a perovskite thin film. The nano cone-column structure can induce regular and uniform growth of perovskite grains, so that the perovskite grains are regular in size and orderly arranged, and the grain boundary density and holes are reduced; and meanwhile, the nano conical column structure on the surface of the perovskite thin film can scatter incident light to increase the effective optical path length in the device, so that the light absorption of the device is enhanced, and the efficiency and the stability of the finally obtained perovskite solar cell are remarkably improved.

The invention discloses a conjugated polymer photocatalyst, a preparation method thereof and application of the conjugated polymer photocatalyst in photocatalytic synthesis of nitric acid, and belongs to the technical field of polymer materials and photocatalysis. The preparation method of the catalyst mainly comprises the following steps: synthesizing an intermediate 2CzTPN-Br through a nucleophilic substitution reaction, then synthesizing an intermediate TBBA through an esterification reaction, and finally copolymerizing the intermediate 2CzTPN-Br and the intermediate TBBA through a coupling polymerization reaction to obtain the target catalyst. The preparation method disclosed by the invention is controllable in process, and the obtained catalyst does not need to participate in noble metal and has wide light absorption, high specific surface area and excellent carrier separation efficiency; when being applied to photocatalytic synthesis of nitric acid, nitrogen in air can be directly and efficiently converted into nitric acid under the mild conditions of room temperature, air atmosphere and water serving as a solvent, excellent durability is shown, the yield of nitric acid can reach 4466.2 mol g <-1 > cat after 324-hour continuous illumination, and wide application prospects are achieved in the field of green synthesis.

A liquid crystal composition contains a side chain type polymer liquid crystalline compound which can form a light absorption anisotropic film having a high alignment degree and has excellent solubility in a general-purpose solvent, a light absorption anisotropic film obtained using the composition, a laminate, and an image display device. The composition includes: a side chain type polymer liquid crystalline compound; and a dichroic substance, in which the compound is a copolymer having a repeating unit (1) containing a mesogenic group with a molecular weight of greater than 280 and a repeating unit (2) with a molecular weight of 280 or less, a content of the repeating unit (2) is less than 14% by mass with respect to a total mass of the compound, and a content of the dichroic substance is greater than 2% by mass with respect to a total solid content of the composition.

The invention discloses a photoelectric detector and electronic equipment, the photoelectric detector comprises a substrate, a light reflection structure, a micropore diaphragm, a heightening layer, a lens structure and a deep groove isolation structure arranged around the substrate, the micropore diaphragm is provided with a light hole, the micropore diaphragm is located at a first side of a first surface of the substrate in a depth direction, and the light hole is located at a second side of the first surface of the substrate. The first surface is a surface for absorbing light into the substrate, and the first side is a side opposite to the interior of the substrate; the heightening layer and the lens structure are located on the first side of the micropore diaphragm in the depth direction. The heightening layer is located between the lens structure and the micropore diaphragm in the depth direction. The reflective structure is located on the first side of the second surface of the substrate, and the second surface is a surface opposite to the first surface in the depth direction. And the light absorption efficiency of the photoelectric detector can be improved.

The invention discloses low-reflectivity spray matting paint as well as a preparation device and a use method thereof, and relates to the technical field of matting paint preparation. The invention relates to a water-based paint which comprises the following components: 30-50% of modified polyurethane acrylate, 5-15% of porous silicon dioxide, 0.1-0.5% of nano carbon black, 1-3% of fluorine modified wax powder and 31.5-63.9% of a quick-drying mixed solvent. The delustering paint has the advantages that pore filling and light absorption are synergistically realized through the composite delustering agent, the reflectivity is relatively low, the hydrophobicity, the adhesive force and the wear resistance are excellent, the construction is simple and convenient, and the preparation device has the advantages of dispersion stage, parameter integration, quantitative index construction, real-time monitoring, closed-loop control and grinding stage. A pore retention rate and energy density gradient collaborative optimization and reflectivity prediction stage is introduced, real-time prediction correction and control of a whole-process model are achieved, the problems of decentralized monitoring, fineness pore contradiction and parameter performance disjunction are solved, and the process efficiency and stability are improved.

The invention provides a photoelectric detector and a preparation method thereof, which are applied to the technical field of semiconductors, and the photoelectric detector comprises a gallium oxide light absorption layer; the two-dimensional Van der Waals material layer is arranged on the gallium oxide light absorption layer and is combined with the gallium oxide light absorption layer through Van der Waals force to form a vertical heterojunction; the metal electrode is formed on the surfaces of the gallium oxide light absorption layer and the two-dimensional Van der Waals material layer; wherein the work function of the two-dimensional Van der Waals material layer is matched with the work function of the gallium oxide light absorption layer, so that staggered energy band arrangement is formed at the interface of the vertical heterojunction. According to the invention, interface defects caused by lattice mismatch can be avoided, and non-radiative recombination of photon-generated carriers can be reduced, so that the response speed and photoelectric conversion efficiency of the photoelectric detector can be greatly improved.

To provide a biosensor and a light detection device allowing a film having excellent light-shielding properties to be patterned with high resolution and high aspect ratio and exhibiting high-resolution.SOLUTION: There are provided a photosensitive composition used for a light detection device, the composition containing a colorant precursor exhibiting light absorptivity upon stimulation, and a transfer film, a laminate, a method for producing the laminate, and a light detection device, each obtained using the photosensitive composition.SELECTED DRAWING: None

This invention discloses a colored radiation-cooling coating based on a transparent composite film and its preparation method, belonging to the technical field of colored radiation-cooling coatings for building energy conservation. The colored radiation-cooling coating based on a transparent composite film includes a surface transparent composite film layer and a bottom radiation-cooling composite layer. The bottom layer is prepared from components A and B. Component A includes transparent resin and radiation-functional fillers; the radiation-functional fillers include barium sulfate particles and hollow structured dielectric microspheres. The surface layer is prepared from components A1 and B. Component A1 includes transparent resin, a light stabilizer, and an ultraviolet absorber. The colored radiation-cooling coating based on a transparent composite film allows the radiation-cooling coating to display different colors without affecting its solar reflectivity. Simultaneously, the combination of the radiation-cooling composite layer and the transparent composite film layer improves the radiation reflection performance of the radiation-cooling coating.

The invention discloses a photoelectric detector and electronic equipment, the photoelectric detector comprises a substrate, a reflective structure, a multilayer film filter and a deep trench isolation structure arranged around the substrate, the multilayer film filter is a multilayer film structure formed by alternately stacking at least two film materials, the multilayer film filter is located on the first side of the first surface of the substrate in the depth direction, the first surface is the surface which absorbs light into the substrate, and the first side is the side back to the interior of the substrate; the multilayer film filter is used for light of a target detection wave band to pass through, and the target detection wave band is a detection wave band of the photoelectric detector; the reflective structure is located on the first side of the second surface of the substrate, and the second surface is a surface opposite to the first surface in the depth direction. According to the technical scheme, the light absorption efficiency of the photoelectric detector can be improved.

The disclosure relates to a method of manufacturing an avalanche photodetector (APD) (100). The method comprises: providing a silicon-on-insulator substrate comprising an oxide layer (101) and a silicon layer (102) disposed on the oxide layer, the silicon-on-insulator substrate comprising a central region (110) in which an n+ doped layer (103) is embedded in the silicon layer, an embedded intrinsic layer (104) is overlaying the n+ doped layer and an intrinsic multiplication layer (105) is overlaying the embedded intrinsic layer and the n+ doped layer; forming in the silicon layer on the central region, by a thermal drive-in process, a p+ doped charge layer (106) above the intrinsic multiplication layer, wherein the p+ doped charge layer forms with the embedded intrinsic layer, the intrinsic multiplication layer and the n+ doped layer a PIN junction of the APD which is configured to cause a photoelectric effect to convert light energy to electrical energy; and depositing on the central region a germanium absorption layer (107) overlaying the p+ doped charge layer, the germanium absorption layer being configured to function as a light absorption layer to absorb light.

According to the double-optical-path gas detection method based on the tunable diode laser absorption spectrum (TDLAS) technology, gas concentration is inverted through double-wavelength laser output, double-optical-path design and a maximum variable data processing algorithm, and multi-gas detection with high sensitivity and wide dynamic range is achieved; the method is especially suitable for distinguishing and concentration inversion of gases (such as methane and carbon monoxide) with similar absorption peaks. The core of the method is that a stepping motor is used for controlling a reflector to move so as to realize the double-optical-path design of the gas chamber; gases with similar absorption peaks can be effectively distinguished in combination with dual-wavelength laser output; the light intensity signals of the long optical path and the short optical path are synchronously processed by using the least square method, and the gas concentration is inversed through light intensity ratio calculation and matrix operation, so that the detection precision is improved. According to the double-optical-path gas detection method, double wavelengths and double optical paths are realized, meanwhile, the length of the optical path can be dynamically adjusted, and the double-optical-path gas detection method can be suitable for different scenes. The system is high in sensitivity, wide in dynamic range and capable of distinguishing multiple gases, and meanwhile the system is flexible, low in complexity and high in anti-interference capacity.

The invention relates to a Janus type heterojunction material as well as a calculation method and application of the Janus type heterojunction material in photocatalytic water decomposition, and belongs to the technical field of heterojunction materials. The upper layer of the material is a 1T-phase GeSe single layer, the lower layer of the material is a 1T-phase SnSSe single layer, and the material is divided into two configurations of GeSe / SSnSe and GeSe / SeSnS according to interface atom arrangement. Modeling and simulation calculation are carried out through VESTA and VASP software, and the result shows that the material has the direct Z-type heterojunction characteristic, photon-generated carrier separation can be effectively promoted, the light absorption range is widened, the photocatalytic oxidation reduction capacity and the solar energy-hydrogen energy conversion efficiency are remarkably improved, and a new strategy is provided for developing efficient photocatalysts.

The invention discloses a DSP (Digital Signal Processor) online self-adaptive wavelet denoising and concentration inversion system and method for TDLAS (Tunable Diode Laser Absorption Spectroscopy) measurement, and relates to the technical field of gas spectrum detection. Comprises: a laser module for emitting semiconductor laser light; the absorption cell module is used for absorbing specific components of the laser through a gas absorption cell formed by the to-be-detected gas; the detection and amplification module is used for converting the transmission light signal into an electric signal and amplifying the electric signal through a photoelectric amplifier; the phase-locked amplification module is used for filtering and extracting noise; the digital signal processing module is used for performing digital sampling, performing wavelet denoising and signal reconstruction, performing wavelet inverse transformation reconstruction on a denoised waveform, and extracting a second harmonic characteristic parameter; and the upper computer module is used for obtaining the concentration of the gas to be detected based on a pre-established gas concentration inversion model according to the second harmonic characteristic parameters. The method is suitable for high-precision detection of trace gas, and has the obvious advantages of strong real-time performance, high precision, good system stability, good portability and the like.

The invention relates to the technical field of biological medicine, in particular to an organic copper ion complex with high photothermal conversion efficiency and preparation and application thereof.The organic copper ion complex is prepared by dissolving reactants in an organic solvent, reacting for a period of time, washing, drying and purifying to obtain pure organic molecules; the novel organic copper ion complex material is obtained by mixing the copper ions with Cu < 2 + >, the light absorption range is expanded from a visible light region to a near-infrared light region, and the material is simple to prepare, shows good near-infrared light absorption capacity, has excellent photo-thermal and copper ion synergistic sterilization capacity and is suitable for popularization and application in the field of biomedicine.

A system for plant-mediated synthesis and characterization of vanadium pentoxide (V2O5) nanoparticles, comprising a structurally integrated device configured to perform extraction, reaction, calcination and performance evaluation within a closed automated control loop, wherein the system includes: a basic chassis made of heat-insulated stainless steel, which houses a microcontroller-based central control unit; a bioextract preparation unit fluidically connected to a reactive mixing chamber, the bioextract preparation unit comprising a Soxhlet extractor with a borosilicate condenser, a thermostatically controlled heating jacket and a digital thermocouple to maintain extraction temperatures between 60°C and 70°C; a precursor feed vessel containing an ammonium metavanadate solution with a molarity between 0.1 M and 0.3 M, wherein this vessel is connected to the reaction mixing chamber via an electromagnetically actuated inlet valve and a precision peristaltic pump; a reaction mixing chamber with an inductive heating coil, a magnetic stirrer plate and a temperature and pH monitoring device configured to maintain a uniform reaction temperature of 70±2°C during the precursor-extract interaction; a calcination module consisting of a muffle furnace lined with refractory ceramic material and containing embedded nichrome heating elements controlled by a PID-controlled temperature controller to achieve a heating rate between 5 °C and 10 °C per minute up to a setpoint of 445±5 °C for combustion synthesis; an optical characterization module with integrated UV-VIS spectrometer, Fourier transform infrared analyzer and photoluminescence detector, each optically isolated and electronically connected to the control unit; and a photocatalytic and antibacterial test chamber fluidically connected to the output of the calcination module, the chamber comprising a UV irradiation array, an optical absorption sensor and a temperature-controlled bacterial incubation plate, the central control unit includes a programmable logic controller (PLC) configured to synchronize the operation of all submodules via feedback control loops, which receive data from temperature, pH and optical sensors, thereby automating the synthesis, analysis and testing of V2O5 nanoparticles.

The invention discloses a compound and application thereof. The present specification provides a compound which exhibits excellent heat resistance and oxidation resistance, thereby stably maintaining light absorption characteristics even under high-temperature or high-humidity conditions. The present specification also provides a resin film which ensures desired optical characteristics by applying the compound. The present specification also provides uses of the compounds.

The application discloses a low-loss DFB laser, two P-AlGaInAs epitaxial layers are grown on the epitaxial structure of the low-loss DFB laser, and a P-AlGaInAs oxidation confinement layer is formed through chip process oxidation; the width of the ridge strip can be wider by adopting the structure, the ohmic contact resistance of the DFB laser can be reduced, the light field width of the DFB laser can be adjusted by adopting the oxidation confinement layer, meanwhile, the light field mode of the DFB laser can be compressed by utilizing the low refractive index characteristic of the oxidation confinement layer, the proportion of the light field in the P-InP ridge waveguide is reduced, and the light absorption loss is reduced.

The invention discloses a recoverable high-enthalpy-value solid-solid phase change material and a preparation method thereof. Solid phase constraint of a liquid phase change material is achieved through a topological entanglement effect generated by a hydrogen bond network and polymer macromolecules. The coupling effect of the two limits the movement between low-molecular-weight phase change material molecules at the phase change temperature, and high-temperature solid-solid phase transformation is achieved. The solid-solid phase change material prepared by the method has a high enthalpy value and also has recoverability. In addition, due to the excellent light absorption capacity of the graphene oxide sheet, the graphene oxide sheet has a potential excellent function in the aspect of solar photo-thermal conversion.

The utility model relates to the technical field of monitoring equipment, in particular to a distribution line on-line monitoring device which comprises a monitoring box, an alarm mechanism, a roller brush and a cleaning and collecting mechanism. The cleaning and collecting mechanism is arranged at the top of the monitoring box. The alarm mechanism is arranged on the monitoring box; and the roller brush is arranged on the cleaning and collecting mechanism. According to the photovoltaic panel cleaning device, through the arrangement of the cleaning and collecting mechanism, the first motor drives the rolling brush to clean the surface of the photovoltaic panel back and forth, and the rolling brush can rotate in the cleaning process, so that the rolling brush and the photovoltaic panel can perform multiple relative movement, and the cleaning effect is better; and dust, pollutants, bird droppings and other impurities are prevented from hindering sunlight incidence, reducing the light absorption effect of the photovoltaic panel and reducing the power generation efficiency, so that the power generation efficiency is improved, and meanwhile, corrosion and damage to the photovoltaic panel caused by long-time dirt coverage and dust retention can be avoided.

The application provides an infrared absorption material based on doping regulation, a preparation method and an infrared detector. By introducing selenium atoms to replace tellurium atoms in a sodium gallium telluride material, the material is doped according to a doping ratio of 1:4 to 1:2 of atomic weight, the energy band structure and optical properties of the material are regulated, a new infrared absorption material is obtained, and the light absorption performance of the material in the infrared wave band is significantly improved. According to the component characteristics of the infrared absorption material, a specific preparation scheme is provided, the preparation is completed by grinding, secondary melting and annealing treatment of the set principle mass of sodium single substance, gallium single substance, tellurium single substance and selenium single substance, and the band gap and absorption intensity are accurately adjusted, and the symmetry and crystal stability of the material are also considered.