15 results about "High energy photon" patented technology

The invention discloses a gallium oxide solar-blind ultraviolet detector based on selective area etching and a preparation method thereof, and belongs to the technical field of semiconductor photoelectric detection. Comprises from bottom to top: a substrate; the first epitaxial layer is located on the substrate, and the first epitaxial layer is a highly doped n-Ga2O3 layer; the second epitaxial layer is located on the first epitaxial layer, and the second epitaxial layer is a lightly doped n-Ga2O3 layer; the third epitaxial layer is located on the second epitaxial layer, the third epitaxial layer is a highly-doped p-NiO layer, and the third epitaxial layer is distributed at intervals through selective area etching; and the first ohmic contact layer is located on the area where the third epitaxial layer is distributed at intervals. The detector adopts a PN junction structure working in a reverse bias state, and compared with a Schottky structure, the detector has the advantages that the built-in electric field intensity and the leakage current level of a device are less affected by high-energy photon irradiation and working environment temperature change, and the anti-irradiation performance of the device and the working capability under an extreme temperature condition are effectively improved.

The invention discloses a parameter determination method and device of a ray sampling model function and ray sampling equipment. The parameter determination method comprises the following steps: irradiating a scintillation detector to be detected by adopting high-energy photons; collecting scintillation pulses output by the scintillation detector to be detected to obtain a plurality of sampling data; fitting the sampling data corresponding to each scintillation pulse by adopting a double-exponential function model to obtain a first parameter point to an nth parameter point, wherein n is an integer greater than or equal to 1; and determining a first calibration parameter point corresponding to the scintillation detector to be detected according to the first parameter points corresponding to the plurality of scintillation pulses, and executing the same operation as the first parameter point on the remaining parameter points to obtain the corresponding calibration parameter points. According to the invention, the fitting process of the scintillation pulse waveform can be greatly simplified, and the fitting speed is increased.

The application provides a spatially coded crystal array, a detector, a method, a device and a storage medium. The spatially coded crystal array comprises a plurality of scintillation crystal strips and a separation layer. The separation layer is arranged along the depth direction of the scintillation crystal strips and is arranged between adjacent scintillation crystal strips. The spatial distribution of the separation layer satisfies a preset spatial coding function, and the property of the separation layer meets a preset spatial coding property. The application forms a spatially coded separation layer in different regions between the scintillation crystal strips, forms incomplete optical isolation, and thus the spatial distribution information of visible light photons is preserved, and the three-dimensional spatial position information of high-energy photons can be accurately obtained.

The embodiment of the invention discloses a high-energy photon ray detection device and a preparation method thereof, which can be used in the field of semiconductor devices, and the device comprises a detector chip, a processor chip and a protective layer. The detector chip and the processor chip are stacked in a three-dimensional manner; and the protective layer surrounds the processor chip and is used for isolating high-energy photon rays. Therefore, the protection layer is arranged between the detector chip and the processor chip which are stacked in a three-dimensional manner, so that the processor chip is surrounded by the protection layer, high-energy photon rays from the direction of the detector can be accurately intercepted, and the generation of an ionization effect is blocked from a ray propagation path; the probability of defects such as oxide layer charge traps and leakage current increase of a processor chip is effectively reduced, the failure risk of the device is remarkably reduced, and the service life of the high-energy photon ray detector is prolonged.

The invention belongs to the technical field of radiation protection, and relates to an ionization chamber for radiation protection dosimetry and a dosimeter system thereof. Wherein the ionization chamber comprises a cylindrical ionization chamber shell (1) and a collector (2) arranged in the ionization chamber shell (1); the ionization chamber further comprises a supporting rod (3) connected with the ionization chamber shell (1), and a signal cable connected with the collector (2) and used for transmitting ionization chamber signals is arranged in the supporting rod (3). As a standard measuring instrument for a secondary standard dosimetry laboratory (SSDL) and a high-requirement user, the geometric configuration, the material and the thickness of the shell of the ionization chamber are reasonably selected, and the radiation dose can be accurately measured within a quite wide energy range on the premise that the sensitivity of the ionization chamber is guaranteed. According to the ionization chamber, within the range from low-energy X rays (40keV) to high-energy photons (1.25 MeV), the fluctuation of response along with radiation substances is smaller than + / -5%, and the problem of magnitude transfer deviation caused by energy dependence of a traditional reference chamber is solved.

This invention discloses a perovskite solar cell and its fabrication method. The method includes: spin-coating a mixed solution of lead iodide and HIAM-4024 or HIAM-4025 onto the surface of an electron transport layer, followed by annealing to obtain a lead iodide layer; and spin-coating an organic halide solution onto the surface of the lead iodide layer, followed by annealing to obtain a perovskite layer. This invention introduces HIAM-4024 or HIAM-4025 into the lead iodide layer, allowing high-energy photons to be filtered through HIAM-4024 or HIAM-4025. Through down-conversion, it emits photons in the visible light range, which are further utilized by the underlying perovskite absorber, thereby improving the light energy utilization of the perovskite solar cell. Furthermore, both HIAM-4024 and HIAM-4025 can effectively filter ultraviolet radiation that could damage the device, further enhancing the light energy utilization of the perovskite device.

The invention relates to the technical field of wastewater treatment, in particular to a membrane distillation system and method for pretreating breeding wastewater by activating sulfite, and the method comprises the following steps: step 1, obtaining breeding wastewater to be treated, adding sulfite into the breeding wastewater to be treated, and uniformly stirring to obtain first sewage; step 2, putting the first sewage into a far ultraviolet reaction device, performing far ultraviolet irradiation treatment, and synchronously stirring to obtain second sewage; and 3, introducing the second sewage into a direct contact type membrane distillation system, and carrying out advanced treatment and concentration. According to the method disclosed by the invention, sulfite in water is selectively and efficiently activated by taking far ultraviolet light as a high-energy photon source, and a reaction system dominated by sulfate free radicals and hydrated electrons is constructed at normal temperature and normal pressure in the presence of dissolved oxygen, so that efficient degradation of organic pollutants in aquaculture wastewater and fundamental inhibition of membrane pollution potential are realized.

The application relates to the technical field of simulation analog of electronic devices, and relates to a simulation method for ionization / displacement synergistic effect in an oxide layer of a bipolar transistor, which comprises the following steps: constructing an oxide layer model of the bipolar transistor; obtaining an ionization radiation effect defect model after the oxide layer model of the bipolar transistor interacts with high-energy photons to generate ionization radiation effect; obtaining a displacement radiation effect defect model after a charged particle interacts with the oxide layer model of the bipolar transistor to generate displacement radiation effect, and calculating a second defect parameter of the displacement radiation effect defect model by using SRIM software; inputting the first defect parameter and the second defect parameter into the ionization radiation effect defect model after the first defect parameter and the second defect parameter are associated, obtaining an ionization / displacement synergistic effect defect model, and obtaining a third defect parameter of the ionization / displacement synergistic effect defect model. The application avoids the problems that an irradiation source is difficult to accurately control energy in a ground test process, improves the accuracy of simulation, and reduces errors.

The invention relates to the technical field of carbon dioxide chemical adsorption trapping, in particular to a photoresponse adsorbent with an amino porous material as a carrier and a preparation method and application of the photoresponse adsorbent, and the photoresponse adsorbent comprises the amino porous material and a photoresponse group loaded on the amino porous material. According to the photoresponse adsorbent provided by the invention, photoinduced CO2 desorption and variable-temperature desorption can be organically combined by utilizing the molecular isomerism capability of high-energy photons in an ultraviolet region and the photothermal effect of sunlight in a long-wave region, and the chemical properties of photoresponse groups in the photoresponse adsorbent are driven to change by ultraviolet light in a short-wave region; the adsorption effect of the photoresponse adsorbent and CO2 is weakened, so that the adsorption capacity of the photoresponse adsorbent is reduced, and the desorption rate is increased; infrared light in a long-wave region increases the temperature of the light response adsorbent through a light-induced heat effect, and assists in driving carbon dioxide desorption.

The invention relates to the technical field of photovoltaics, and provides a TBC battery and a preparation method and application thereof in a photovoltaic system.The TBC battery comprises a first exciton fission material layer, a second exciton fission material layer and a third exciton fission material layer, the first exciton fission material layer is used for absorbing high-energy photons in an ultraviolet region and enhancing the separation efficiency of photon-generated carriers; the first packaging protection layer is located on the front face of the first exciton fission material layer, and the first packaging protection layer is made of hafnium nitric oxide modified by a hafnium-based metal organic framework. Through the synergistic effect of the two layers of structures, the photoelectric conversion efficiency of the formed TBC battery is improved by 15-20% compared with that of a conventional TBC battery, and the photoelectric conversion efficiency can reach 28% or above.

An assembly for scanning a core or rock sample is disclosed. The assembly includes a first high energy photon emitter that is configured to emit a first beam of photons at a first location on the core or rock sample and a first detector that is configured to receive photons excited by the first high energy photon emitter from the first location on the core or rock sample along a first detection axis. A first collimator surrounds the first detection axis. The first collimator is removably coupled to the assembly.

The invention discloses a solar cell based on an exciton fission mechanism and a preparation method of the solar cell, and belongs to the technical field of photovoltaics. The solar cell comprises an electron transport layer, a light absorption layer, a hole transport layer and an electrode which are stacked, wherein the light absorption layer comprises a perovskite thin film and an exciton fission material which is uniformly distributed on the perovskite thin film. The exciton fission material is doped in the perovskite thin film, so that the exciton fission material is synergistically embedded into or distributed in crystal grains and crystal boundaries in a perovskite crystal forming process, and a composite light absorption layer with exciton fission capability is constructed. According to the composite structure, a single high-energy photon can excite two carriers through exciton fission, so that the photon utilization rate of the solar cell is improved.

This invention relates to a transparent solar cell device and its fabrication method. The device includes a substrate, a transparent or semi-transparent anode layer, an anode auxiliary electrode layer, a PV photovoltaic layer, a transparent or semi-transparent cathode layer, a quantum dot absorption and emission layer, and an encapsulation layer, all stacked together. The quantum dot absorption and emission layer comprises quantum dot material, resin, and a photosensitizer. The quantum dot material is a nanostructured inorganic quantum material. The core diameter of the quantum dot material is 1-50 nm, and the thickness of the outer shell is 10-200 nm. The quantum dot material also includes an energy level transition layer between the core and the outer shell, which is one or more of sulfides, selenides, phosphides, or tellurides. Furthermore, a metal reflective layer is provided on the encapsulation surface. This solar cell device can fully utilize the high-energy photons in the short-wavelength band that are sacrificed in traditional solar cell devices.

The invention discloses a high-energy photon track detector structure in a space environment, and belongs to the field of high-energy physics. The high-energy photon track detector structure comprises a cesium iodide module and a silicon micro-strip detection module, the cesium iodide module comprises a cesium iodide crystal; the silicon micro-strip detection module comprises a plurality of detection layers; the detection layer comprises two detection surfaces formed by a plurality of silicon micro-strip detectors which are arranged in parallel; the silicon micro-strip detector comprises a plurality of silicon wafers which are arranged in a strip shape; in the detection layer, the two detection surfaces are arranged in parallel, and the arrangement directions of the silicon micro-strip detectors of the two detection surfaces are perpendicular to each other; the plurality of detection layers are arranged in parallel and are vertically distributed; and the cesium iodide crystal is arranged above the plurality of detection layers. The track detector provided by the invention has high position resolution and can stably operate in a space environment.

The invention discloses a reference radiation field system of an accelerator R-F radiation substance and a construction method, and the system comprises an accelerator which is used for generating incident protons; the CaF2 target material is fixed in the direction perpendicular to the proton incidence direction, the experiment positioning system is arranged in the direction with the included angle of 0 degree in the proton incidence direction, the starting point of the experiment positioning system is located at the lower end of the CaF2 target material, the total stroke length is 5 m, and the experiment positioning system has the front-back, left-right, up-down and rotary movement functions; the dose rate selection module is used for carrying out R-F radiation substance low-energy pollution photon research in an area which is 0-1m away from the CaF2 target material, and selecting a dose rate value in a range of 1 [mu] Sv / h-1mSv / h in an area which is 1-5m away from the CaF2 target material according to an inverse proportion attenuation relation of a high-energy photon radiation dose rate along with the square of the distance; the first movable lifting positioning table is used for placing a sample and enabling the irradiated center position of the sample and an accelerator beam to be at the same height through lifting adjustment; the CaF2 target material, the experiment positioning system and the first movable lifting positioning table are all arranged in the target chamber.