1805 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.

The invention discloses a full-polarized light acoustic imaging method and device based on a vector absorption ball. The method comprises the following steps: expressing light absorption characteristics of a sample by establishing a mathematical model of the vector absorption ball; measuring the absorption intensity of the sample absorber under the exciting light in different polarization states through a photoacoustic signal; reconstructing a vector absorption ball of each point of the sample according to the absorption intensity of each point of the sample under different polarized exciting light; five structural parameters are extracted through the vector absorption balls at all points of the sample to reconstruct a structural characteristic diagram of the sample; the full-polarized light acoustic imaging device based on the vector absorption ball comprises a polarized pulse light modulation excitation module, a signal detection module, a two-dimensional scanning module and a signal processing module. The method provided by the invention overcomes the defect that the polarization absorption of the sample cannot be completely expressed by the traditional polarized light acoustic imaging, and realizes the measurement of the full-polarization absorption characteristic and the complete structure expression of the corresponding sample in the same set of light path.

The invention provides a data processing method and system for an aerosol analyzer, and belongs to the technical field of data processing of aerosol analyzers, and the method comprises the following steps: collecting light absorption signals of aerosol particles according to a light source system and a detector, and generating an original electric signal; preprocessing the original electric signal to obtain preprocessed data; extracting an absorption coefficient, a multiband light attenuation characteristic and a mass concentration parameter of the black carbon aerosol from the preprocessed data; analyzing the features based on a machine learning model, outputting a real-time prediction result of the concentration of the black carbon aerosol, and preprocessing the original electric signal to obtain preprocessed data, including the step of noise removal. According to the method, baseline drift is dynamically corrected through a polynomial fitting algorithm, wavelet transform denoising and a machine learning model are combined, the accuracy and real-time performance of black carbon aerosol concentration detection are remarkably improved, and the problems that in a traditional method, manual intervention is much, and the model generalization ability is poor are solved.

The invention provides a single-photon avalanche diode and a single-photon detector, and relates to the technical field of semiconductor photoelectric detection, and the single-photon avalanche diode comprises a plurality of avalanche diode units. The avalanche diode units are sequentially stacked in the propagation direction of incident light to be detected. Each avalanche diode unit is provided with an electric field control module which is used for independently adjusting the bias electric field of each avalanche diode unit. In the propagation direction of the incident light, the avalanche diode unit of the next stage is used for absorbing the remaining photons which are not absorbed by the avalanche diode unit of the previous stage and generating carriers, so that avalanche current is formed. The light absorption wavelength ranges of adjacent avalanche diode units are at least partially overlapped. The single-photon avalanche diode solves the problem that the existing single-photon avalanche diode cannot balance high detection efficiency and low dark current, and achieves the purpose of improving the detection efficiency of a single-photon detector on the premise of not increasing the dark current.

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.

The invention provides a Cu2O-based heterogeneous composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: coating the surface of a Cu2O hollow sphere substrate with a carbon layer, and depositing layered double hydroxides (LDHs) and metal palladium (Pd) nanoparticles on the carbon layer. According to the material, through a Cu2O-carbon layer-LDHs-Pd multistage heterostructure design, space optimization of light absorption, charge transfer and catalytic sites is realized; cu2O-carbon layer-LDHs interface coupling promotes directed migration of photo-induced electron-hole pairs, and the surface plasmon resonance effect of Pd nanoparticles enhances the charge separation efficiency; the LDHs optimizes a charge transfer path through surface oxygen vacancy or metal valence cycle, so that synergistic oxidation of non-free radicals and free radicals is realized, the organic matter degradation efficiency is remarkably improved, the oxidation path is widened, and the performance bottleneck of a single material is broken through.

A spectroscopic apparatus including an analysis optical system, a length measuring optical system, and a calculation apparatus and performing spectroscopic analysis of a sample, the analysis optical system including a moving mirror having a first reflection surface and a second reflection surface, the moving mirror configured to be translated, a gas cell configured to encapsulate a gas and add a light absorption signal to the analysis light, and a first light receiver configured to receive the analysis light containing a sample derived signal, a first modulation signal, and the light absorption signal, the length measuring optical system including a length measuring optical system configured to acquire a displacement signal corresponding to the position of the moving mirror from laser light reflected off the second reflection surface, the calculation apparatus including a moving mirror position calculator, a light intensity calculator, a Fourier transformer, and a moving mirror position correction section.

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 relates to a light / heat / magnetic detachable high-strength polyurethane adhesive as well as a preparation method and application thereof. The light / heat / magnetic detachable high-strength polyurethane adhesive comprises a polyurethane adhesive and a functional filler. According to the light / heat / magnetic detachable high-strength polyurethane adhesive prepared by the preparation method disclosed by the invention, the colloid is black, and the adhesive has excellent light absorption performance and can realize rapid separation of an adhesive interface under infrared irradiation through a heat effect; meanwhile, the ferroferric oxide can be vibrated and heated under the action of an external magnetic field due to the magnetic response characteristic of the ferroferric oxide, so that fracture and separation of the adhesive layer are promoted. By means of the technology, efficient and reversible disassembly of parts bonded through the hot melt adhesive is achieved, possibility is provided for recycling and reusing of bonding materials and devices, and the problem that traditional polyurethane hot melt adhesive cannot be recycled is solved.

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 discloses a nano-pillar array NaKSb photoelectric cathode for enhancing light absorption, which is characterized in that through the design of a double-layer TiOtwo-dimensional nano grating and a nano-pillar array structured NaKSb photoelectric cathode layer, the optical path of light with the wave band of 450-900 nm in the photoelectric cathode is increased under the condition that the thickness of the NaKSb photoelectric cathode is not increased, the reflectivity of the wave band of 400-600 nm is reduced, and the light absorption of the NaKSb photoelectric cathode is enhanced. The absorption rate at 400-1000 nm is improved by 32.28% compared with that of a traditional planar film type photoelectric cathode, the absorption rate at 800-1000 nm near-infrared band is improved by 40.27% compared with that of the traditional planar film type photoelectric cathode, the problem that the absorption of the traditional planar film type photoelectric cathode near-infrared band is insufficient is solved, and the photoelectric cathode is suitable for high-performance low-light night vision imaging devices.

The invention relates to the field of optical thin films, in particular to a preparation method of an optical diffusion film. A preparation method of an optical diffusion film comprises the following steps: uniformly mixing a curing agent and polydimethylsiloxane, curing, and then carrying out oxygen plasma treatment and room temperature aging treatment to obtain a polydimethylsiloxane flat plate; dissolving PET particles and PMMA particles in a solvent to obtain a polymer solution; and placing a polydimethylsiloxane flat plate above the polymer solution, and standing to obtain the optical diffusion film. According to the application, PMMA is used as a high glass transition temperature component to be blended with PET, so that the overall glass transition temperature of a blending system is improved, and the practicability of the optical diffusion film in a high-temperature environment is improved; strong scattering is provided through the refractive index difference between air holes and a polymer phase, and a refractive index gradient is formed by using the refractive index difference between PET and PMMA, so that a secondary scattering interface is formed, and light absorption is reduced and high transmittance is maintained while high haze is ensured.

The invention discloses a solar cell and a preparation method thereof, electric equipment and power generation equipment, the solar cell comprises a passivation material, and the passivation material comprises cations and anions; the cations comprise ammonium ions, and the anions comprise acid radical ions; the ammonium ions comprise substituted or unsubstituted alkyl ammonium ions, and the acid radical ions comprise any one of organic acid radical ions and inorganic acid radical ions. The positive ions in the passivation material can enter perovskite crystal lattices to form two-dimensional perovskite to play a role in protecting a light absorption layer, and the electron cloud density on the negative ions is relatively high and can act with excessive lead iodide in the perovskite to stabilize a lead-iodine octahedral framework, so that the passivation material can passivate the defects of a perovskite layer, and the light absorption performance of the light absorption layer is improved. And the photoelectric conversion efficiency and the stability of the solar cell device are improved.

Provided is an optical laminate with excellent durability and an image display device formed of the optical laminate. The optical laminate includes a pressure sensitive adhesive layer 1, a specific laminate including a resin layer and a light absorption anisotropic layer which are adjacent to each other, and a pressure sensitive adhesive layer 2 in order, in which the light absorption anisotropic layer contains a dichroic substance, the pressure sensitive adhesive layer 1 is adjacent to the resin layer of the specific laminate, and a storage elastic modulus Ep of the pressure sensitive adhesive layer 1 and a storage elastic modulus Ea and a moist heat strain δa of the resin layer satisfy Expression (1-1) ¼ (3×Ep / Ea)2 / 3>δa.

The invention provides a photosensitive glass ceramic with lower visible light absorption loss, which comprises the following components in molar percentage: cation components: 50-65% of Si < 4 + >; 25 to 38% of Na < + >; 2-6% of Zn < 2 + >; 3-9% of Al < 3 + >; 0.001 to 0.1% of Ag < + >; 0.001 to 0.08% of Ce < 4 + >; 0.02 to 0.2 percent of Sb < 3 + >; the negative ion component comprises 88 to 98 percent of O < 2->, 0.001 to 0.09 percent of Sn < 4 + > and 88 to 98 percent of Sn < 4 + >; f-: 2 to 10%; and 0.05 to 2 percent of Br <->. Through reasonable component design, the obtained photosensitive microcrystalline glass is low in visible light absorption loss and can be used for preparing glass elements such as volume Bragg gratings with low optical loss and high diffraction efficiency.

Disclosed in the present invention are an oxygen-enriched carbon quantum dot composite bismuth oxybromide nanosheet material, and a preparation method therefor and the use thereof. The preparation method comprises: sequentially uniformly dissolving Bi(NO3)3·5H2O and oxygen-enriched carbon quantum dots in a mannitol solution, then adding KBr thereto, stirring the mixture, then subjecting same to a solvothermal reaction, and then subjecting same to washing, suction filtration and drying, so as to obtain an oxygen-enriched carbon quantum dot composite bismuth oxybromide nanosheet material. The preparation method of the present invention is simple, and the bismuth oxybromide nanosheet is more easily and uniformly modified with the oxygen-enriched carbon quantum dots. The oxygen-enriched carbon quantum dots provide more active sites for bismuth oxybromide, thereby overcoming the defects of monomer bismuth oxybromide having a limited visible-light response and few active sites, optimizing the electron transmission performance of monomers, enhancing the light absorption intensity of the material, effectively guiding the charge flow, accelerating the separation and transfer of photo-generated charges, and achieving efficient visible light catalytic activity.

The present disclosure relates to the technical field of semiconductors, and provides a method of processing a photoresist layer, and a photoresist layer. The method of processing a photoresist layer includes: forming a photoresist layer on a target layer, where the photoresist layer includes a first part away from the target layer and a second part close to the target layer; processing the photoresist layer by using a first process, such that a light absorption rate of the first part is less than a light absorption rate of the second part; performing first exposure processing on the photoresist layer to form an exposure image in the second part; and stripping the first part and performing first development processing on the photoresist layer, to pattern the second part into a photoresist pattern.

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.

A semiconductor light-receiving element (100) according to the present disclosure comprises: a substrate (1); a first mesa structure (30) having at least an n-type semiconductor layer (2, 3), a multiplication layer (4), a p-type electric field relaxation layer (5), a light absorption layer (6), and an i-type semiconductor layer (8) having a larger band gap than the light absorption layer (6), said layers being sequentially formed on the substrate (1); a second mesa structure (31) having at least a window layer (9) having a larger band gap than the light absorption layer (6), the second mesa structure (31) being formed on the first mesa structure (30); and a terrace part (40) comprising the outermost surface of the first mesa structure (30) exposed to the outer-peripheral side of the second mesa structure (31).

An intra-oral optical scanning method for intra-oral optical scanning including projecting a pattern, the pattern including at least a first area illuminated by a first color of light and a second area illuminated by a second color of light and at least one non-illuminated area onto an intra-oral feature, making a first image of the first area, the second area and the non-illuminated area differentiating between the first color of light and the second color of light in the first image of the projected pattern, and determining from the image of the non-illuminated area at least one of an ambient light level, a level of scattered light, a level of light absorption and a level of light reflected from at least one of the first area and the second area. Related apparatus and methods are also described.

The invention belongs to the technical field of laser cladding processing, and provides a method for preparing an ablation-resistant copper alloy through a blue laser cladding process and the ablation-resistant copper alloy. The method comprises the following steps that alloy powder is subjected to ball milling, and mixed powder is obtained; the alloy powder is CuCr powder, CuW powder, ODS-Cu powder, SiO2 / Cu powder or C / Cu powder; and the mixed powder is used for preparing a cladding layer on a copper base material by adopting a blue laser cladding process. According to the method, the characteristic that a copper material is high in blue laser absorptivity is utilized, the problems of heat input accumulation, air holes, inclusions and the like under the conditions of low absorptivity and high energy density are avoided, and laser process parameters are controlled to form a molten pool on the surface of a copper base material; and the coaxial powder feeding device gathers the powder material into the molten pool for melting and rapid cooling and solidification by utilizing protective gas to form a cladding layer with excellent performance, so that the surface of the copper base material is modified, and the performance of the copper base material is improved.

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.

In various embodiments, a process for classifying absorbing targets by a lidar system includes emitting output beams comprising pulses of light for a region in a field of regard, and detecting received pulses of light associated with at least a portion of the emitted pulses of light for the region. The process includes determining a metric associated with the detected received pulses of light, providing at least a portion of the metric to a trained machine learning model to determine a machine learning output, and classifying a light absorbing blockage associated with the region based on the machine learning output.

The invention discloses a black silicon broadband photoelectric detector based on alternating current photovoltaic effect optimization. The device comprises an alternating-current photovoltaic effect unit, a core light absorption layer, a heterostructure building layer, a top electrode and a bottom electrode, the alternating-current photovoltaic effect unit is used for generating a periodic flash field, irradiating the periodic flash field on the surface state of the heterogeneous pn junction to capture or release transient charges, and collecting the transient charges to perform ultra-high-sensitivity optical detection; the core light absorption layer is made of a black silicon material and is used for improving light absorption through a surface micro-nano structure, widening the light absorption range and providing a surface state as an active site for capturing or releasing transient charges in an alternating current photovoltaic effect; the heterostructure layer and the core light absorption layer form a heterogeneous pn junction so as to construct a built-in electric field to promote generation, separation, migration and recombination of carriers. According to the invention, the characteristics of wide spectral response, ultrahigh sensitivity, low dark current and zero-bias working can be realized, high-precision detection can be carried out under weak light, and the development of high-precision technology is facilitated.

The invention provides a solar cell and a preparation method thereof, a power utilization device and a power generation device, the solar cell at least comprises a light absorption layer, the light absorption layer comprises a light absorption material and an additive, the additive comprises a first group and a second group, the first group comprises at least one of phenyl, alkyl, anilino and carbazolyl, and the second group comprises at least one of phenyl, alkyl, anilino and carbazolyl. The second group comprises at least one of carboxyl, phosphate and ammonium group. By arranging the additive in the light absorption layer, the defects of the light absorption layer can be reduced, and the effect of passivating the light absorption layer is achieved.

The invention discloses a preparation method of a double-response self-repairing super-hydrophobic coating on the surface of an aluminum alloy. The preparation method is specifically implemented according to the following steps: step 1, preparing sea urchin-shaped photo-thermal particles Fe3O4-at-TiO2; step 2, preparing self-repairing porous boron nitride; 3, preparing thermal response particles by an emulsion method; step 4, carrying out photocuring and dynamic disulfide bond crosslinking modification; and 5, preparing the double-response self-repairing super-hydrophobic coating. The invention also discloses the coating prepared by the method, the light absorption area is increased by preparing the sea urchin-shaped Fe3O4-coated TiO2, and after the two materials form a heterojunction, absorption spectrums complement each other, so that the energy of sunlight can be more efficiently utilized, and the photothermal conversion efficiency is improved. Porous boron nitride (PBN) increases the specific surface area, loads more perfluoropolyether and forms a continuous heat conduction channel through a porous framework to improve the heat conductivity, it is guaranteed that heat can be transmitted to the thermal response shell to the maximum extent, and the thermal response efficiency is improved.