56 results about "High energy photon" patented technology

The invention discloses a laminated solar cell structure containing a selective reflection / light transmission optical thin film. The laminated solar cell structure comprises a wide-band-gap solar cell, the selective reflection / light transmission optical thin film and a narrow-band-gap solar cell which are sequentially arranged in the light incidence direction. The selective reflecting / light-transmitting optical thin film is at least used for 1) reflecting high-energy photons to be absorbed and utilized by the wide-band-gap solar cell; and 2) low-energy photons are transmitted to be absorbed and utilized by a narrow-band-gap solar cell. According to the invention, the selective reflection / light transmission optical thin film is used to fully reflect the transmitted high-energy photons to the wide-band-gap top cell without influencing the transmission of low-energy photons, so that the absorption and conversion of the wide-band-gap top cell to the high-energy photons can be improved, the photoelectric conversion efficiency of the laminated cell can be effectively improved, and the laminated cell has a good application prospect.

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.

Means and method for photo-enhanced electro-catalytic process using nuclear thermal NTAC-integrated PEEC (PEEC-NTAC) catalytic processes combining ECM with energetic photon sources, such gamma rays, and sono-catalytic driver.

The invention discloses a four-end laminated solar cell based on ultra-wide-band-gap perovskite and a preparation method of the four-end laminated solar cell. The four-end laminated solar cell based on the ultra-wide-band-gap perovskite comprises a top cell and a bottom cell, wherein the top cell is an ultra-wide-band-gap perovskite solar cell of which the band gap is not less than 2.0 eV. According to the invention, the problem of low utilization rate of the bottom cell in the existing perovskite-based four-terminal laminated cell can be solved, and the overall photoelectric conversion efficiency of the solar cell can be synergistically improved. According to the invention, the band gap characteristic of the ultra-wide band gap perovskite solar cell is used, and high-energy photons are fully absorbed and utilized to generate high open-circuit voltage; meanwhile, the light absorption of the bottom cell can be enhanced, and the photoelectric conversion efficiency of the bottom cell is effectively exerted; in addition, the damage of ultraviolet rays to the performance of the bottom cell is avoided. Therefore, the efficiency and the stability of the solar cell can be synergistically improved, and the application prospect is good.

The invention provides a modified intermediate layer of a perovskite laminated cell, a preparation method of the modified intermediate layer and the perovskite laminated cell, and belongs to the field of solar cells. The modified middle layer is a composite layer doped with a down-conversion material, and the composite layer is located between the top cell and the bottom cell; or, the modified intermediate layer is a first charge transport layer doped with a down-conversion material, and the first charge transport layer is located between the tunnel junction layer and the perovskite light absorption layer. By introducing the down-conversion material into the intermediate layer of the perovskite laminated cell, part of high-energy photons can be converted into a plurality of low-energy photons, so that the cell can effectively utilize each wave band in a spectrum, the response range of the cell to the spectrum is widened, the energy band structure of the intermediate layer can be improved, and the photons can be efficiently converted. Therefore, the conversion efficiency of the cell can be improved, the light loss and the heat loss of the cell can be reduced, the stability of the cell is improved, the service life of the cell is prolonged, and the applicability of the cell in practical application is improved.

The application discloses a kind of gas-phase pollutant full-species high-sensitivity online mass spectrometer and detection method, it is related to mass spectrometry technical development technical field.Mass spectrometer includes high-energy photoionization ion source structure, ion transmission structure and mass spectrum detection structure.High-energy photoionization ion source structure includes high-energy photon generation structure, sample introduction tube and ionization chamber, high-energy photon generation structure utilizes neon discharge to generate high-energy photon, high-energy photon is mixed with the gas to be measured that enters through sample introduction tube in ionization chamber, and the gas to be measured is ionized;Ion transmission structure is equipped with radio frequency quadrupole rod, for filtering the large amount of N2 + And O2 + Non-target background ions generated when measuring air;Mass spectrum detection structure is equipped with pulse-compensation double-electrode ion removal device, for further removing non-target background ions, relieving the measurement saturation and loss of ion detector.The application can realize the full coverage high-sensitivity detection of all gas-phase organic and inorganic pollutants in atmosphere.

The invention belongs to the field of photovoltaic materials, and particularly provides a perovskite light absorption layer passivation solution and application thereof in a solar cell, and solutes in the perovskite light absorption layer passivation solution comprise an amino-substituted nitrogen-containing heterocyclic compound and a benzoic acid derivative. And forming a honeycomb-structured passivation layer on the surface of the light absorption layer through molecular self-assembly. The structure is synchronously realized as follows: defect deep passivation and ion migration suppression are carried out to reduce interface loss; a dynamic ultraviolet shielding layer is formed through the exciton coupling effect, high-energy photons are converted into heat energy in a non-radiation mode to block perovskite light damage, and finally the photoelectric conversion efficiency and the long-term operation stability of the solar cell are cooperatively improved.

Means and method for photo-enhanced electro-catalytic process using nuclear thermal NT AC -integrated PEEC (PEEC-NTAC) catalytic processes combining ECM with energetic photon sources, such gamma rays, and sono-catalytic driver.

A detector assembly has a first detector array to detect low-energy photons and generate corresponding first scan image data. The first detector array has a first set of detector positions arranged in n rows and m columns. Alternate positions along each of the n rows and along each of the m columns are populated with detector elements. The detector assembly also comprises a second detector array to detect high-energy photons and generate corresponding second scan image data. The second detector array has a second set of detector positions arranged in N rows and M columns, and all detector positions in alternate rows are fully populated with second detector elements. A processor is configured to process the first and second scan image data, and the processing is modulated to optimize at least one of a set of image performance metrics.

A solar cell device having a solid state light absorber region that incorporates a donor-acceptor particle structure. The particle structure includes acceptor particles that generate a flow of electrons in the solid state light absorber region in response to absorbed photons; and donor particles comprising a phosphorescent material, wherein each donor particle is coupled to a group of acceptor particles, and wherein the phosphorescent material absorbs high energy photons and emits lower energy photons that are absorbed by the acceptor particles.

The invention relates to a quality control phantom designed for dosimetric measurements in radiotherapy. Said phantom can perform both dose efficiency and energy determination measurements in high energy photon beams.

The invention discloses a soft X-ray array system suitable for a nuclear fusion device, which comprises a non-magnetic metal shell, a front-end amplifier is arranged in the non-magnetic metal shell, the front-end amplifier adopts a secondary amplification circuit, a soft X-ray detector array is arranged on one side of the non-magnetic metal shell, a high-temperature welding spot is arranged on the front-end amplifier, and the high-temperature welding spot is connected with the soft X-ray detector array. The soft X-ray detector array is connected to the front-end amplifier through a signal transmission line and a high-temperature welding spot, a signal output end of the front-end amplifier is connected with one end of a signal output line, and the other end of the signal output line leads an output signal out of the vacuum chamber through a penetrating piece. The system can resist high-energy photons and a strong electromagnetic field and can shield the strong electromagnetic field by adopting a non-magnetic metal shell, and the front-end amplifier adopts a secondary amplification circuit to process an original signal, so that the interference signal noise of the system in a strong electromagnetic environment can be reduced, the output signal-to-noise ratio of the system is improved, and the output quality of a detection signal is ensured.

The invention provides a preparation method and application of a boron target for generating a high-energy photon radiation field, and the preparation method comprises the following steps: mixing filtered boron elementary substance with mineral oil, and stirring until the mixture is uniformly mixed; standing for a certain time until the boron elementary substance is uniformly suspended, dipping the boron elementary substance on the upper layer of the mineral oil by using a brush, and uniformly coating on the surface of the substrate; the substrate is placed in a drying box to be baked under flowing air till the mineral oil is completely evaporated, and the boron target coated with the boron elementary substance layer is obtained. The preparation method of the boron target is easy and convenient to operate, professional equipment is not needed, and the prepared boron target is durable and not prone to damage. A proton beam with incident energy greater than or equal to 240keV and beam intensity greater than or equal to 15mu A is used for bombarding the boron target, and a stable high-energy photon radiation field with a dose rate greater than 100mu Sv / h can be generated.

A photovoltaic generation assembly is disclosed, comprising a plurality of vertically oriented solar tubes, each aligned with a corresponding Fresnel lens mounted on a movable Fresnel lens holder. The system includes a height adjustment assembly that controls the vertical position of the Fresnel lenses to optimize light focus based on solar movement. The adjustment mechanism may include a stepper motor driving a gear-based shaft assembly, or alternatively, a solenoid-based system that magnetically elevates or lowers the lens holder. Each solar tube incorporates a down-conversion assembly to shift high-energy photons, an up-conversion assembly to convert low-energy infrared photons into usable light, and a reflective base for photon recycling. An optional thermoelectric layer recovers heat energy. The arrangement increases photon absorption via internal reflections, improving solar conversion efficiency and enabling multiband energy harvesting from a compact, modular solar architecture.

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.

A solar cell device having a solid state light absorber region that incorporates a donor-acceptor particle structure. The particle structure includes acceptor particles that generate a flow of electrons in the solid state light absorber region in response to absorbed photons; and donor particles comprising a phosphorescent material, wherein each donor particle is coupled to a group of acceptor particles, and wherein the phosphorescent material absorbs high energy photons and emits lower energy photons that are absorbed by the acceptor particles.

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.

The invention relates to a reference radiation field based on high-energy photons of an accelerator and an application method of the reference radiation field. An accelerator pipeline area is a pipeline of a straight tubular structure and is used for emitting incident particle beams required by a nuclear reaction of the high-energy photons; the target chamber vacuum operation area is connected with the accelerator pipeline area and is a pipeline of a T-shaped structure, a transverse pipeline of the T-shaped structure is connected with the accelerator pipeline area and is parallel to the accelerator pipeline area, and a longitudinal pipeline of the T-shaped structure is connected with a vacuum extraction device; the target chamber nuclear reaction area is connected with the target chamber vacuum operation area, is connected to one end, far away from the accelerator pipeline area, of the transverse pipeline of the T-shaped structure, a nuclear reaction target material is arranged in the target chamber nuclear reaction area, and an incident particle beam penetrates through the target chamber vacuum operation area to react with the nuclear reaction target material to form high-energy photons. According to the invention, the independent high-energy photon radiation field is arranged, and the technical effect of meeting the verification requirement of a domestic nuclear power plant on the high-energy photon dose rate can be achieved.

The invention relates to a pollution radiation test method for a high-energy photon reference radiation field, and the method comprises the steps: constructing a detector physical model of high-energy photons based on a Monte Carlo method; obtaining a measurement spectrum at a high-energy photon radiation substance calibration point through a detector physical model; calculating the measurement spectrum through a G function to obtain a high-energy photon dose rate value; simulating an HpGe detector detection efficiency curve within the energy range of 8MeV in the detector physical model to obtain a low-energy photon dose rate value; based on Co-60 isotope energy calibration, determining an electron dose rate value through an extrapolation ionization chamber; neutron isotopes are set, and a neutron dose rate value is obtained based on a long counter; and determining a dose ratio based on the dose rate value. The technical effect of obtaining the dose ratio of the high-energy photon dose rate value, the low-energy photon dose rate value, the electron dose rate value and the neutron dose rate value is achieved.

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 discloses a photonic crystal optical fiber chemical system, and relates to the technical field of optical fiber chemistry, photocatalysis, electrocatalysis and multifunctional membrane electrodes. According to the system, a three-layer membrane electrode structure of an anode catalyst layer, a proton or ion exchange layer and a cathode catalyst layer is constructed by taking a photonic crystal fiber with a periodic microstructure as a light guide and support framework. A functional liquid with an adjustable refractive index and nonlinear response capability is introduced into an optical fiber pore channel, so that accurate regulation and control on a light propagation path, mode field distribution and light intensity are realized, and frequency doubling excitation and high-energy photon generation are supported. The system can be used for photocatalysis, electrocatalysis and photoelectric synergistic reaction at the same time, has an in-situ trace detection function, and is suitable for the fields of green energy conversion, environment monitoring, multi-mode optical fiber analysis and the like. The device has the advantages of high structure integration level, high light energy utilization rate, accurate interface control, high reaction efficiency and the like.

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 invention discloses a catalyst-free photo-induced direct alkane cracking method. The method comprises the following steps: vacuumizing a reactor; alkane is introduced into the reactor subjected to the vacuumizing treatment; and irradiating the alkane by adopting a light source containing ultraviolet rays with the wavelength of 100-400nm on the premise of not adding a catalyst so as to excite a C-H bond at the tail end of the alkane to generate uniform cracking, thereby generating a hydrogen free radical and carbon free radical intermediate, the hydrogen free radicals are coupled to generate hydrogen, and the carbon free radical intermediates are subjected to self-reaction to form coupling products. Alkane molecules are excited by high-energy photons to realize direct homocracking of C-H bonds, and then homocracked hydrogen free radicals and carbon free radical intermediates react respectively.

This invention discloses a tunneling photodiode suitable for high-energy photon detection and its fabrication method. It employs a very thick intrinsic perovskite crystal as the high-energy photon absorber, achieving high photon absorption and conversion efficiency. A perovskite P-type layer and an N-type layer are grown at both ends of the intrinsic perovskite crystal using solution-doped epitaxy, forming a perovskite PIN junction. Dark current and noise are suppressed using the depletion layer barrier in the junction region. Narrow-bandgap quantum dots are epitaxially grown in the junction region, forming band traps. When high-energy photons are incident, photogenerated carriers generated by the intrinsic perovskite absorber are injected into the quantum dot energy level traps, resulting in tunneling field emission and a high-gain photocurrent. Compared to conventional high-energy photon PIN detection structures, this invention achieves higher photocurrent gain due to the introduction of the tunneling field emission structure. Compared to high-energy photon avalanche diode detection structures, this invention exhibits lower shot noise because it does not generate random avalanche effects.

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 provides a g-C3N4 / Bi2O3 photocatalyst based on biomass conversion Cu monatomic anchoring as well as a preparation method and application of the g-C3N4 / Bi2O3 photocatalyst, and belongs to the technical field of liquid biomass catalytic conversion. The preparation method of the photocatalyst comprises the following steps: taking g-C3N4 and a bismuth source as raw materials, and performing solvothermal reaction to obtain a precursor; calcining the precursor to obtain a g-C3N4 / Bi2O3 composite carrier; the g-C3N4 / Bi2O3 composite carrier is soaked in an alcoholic solution of copper salt, a solid product is collected after soaking is completed, then the solid product is calcined, and the Cu single atom anchored g-C3N4 / Bi2O3 photocatalyst is obtained. The photocatalyst is rich in oxygen vacancies, so that the band gap of the catalyst is effectively reduced, and the light response range is widened to a near-infrared region. In addition, the special structure of the catalyst significantly improves the carrier separation capability, and improves the utilization capability of high-energy photons.

To provide an inspection system capable of detecting high-energy photons and charged particles.SOLUTION: An image sensor for short-wavelength light and charged particles includes a semiconductor membrane, circuit elements formed on one surface of the semiconductor membrane, and a pure boron layer on the other surface of the semiconductor membrane. This image sensor has high efficiency and good stability even under continuous use at high flux for multiple years. The image sensor may be fabricated using CCD (charge coupled device) or CMOS (complementary metal oxide semiconductor) technology. The image sensor may be a two-dimensional area sensor, or a one-dimensional array sensor. The image sensor can be included in an electron-bombarded image sensor and / or in an inspection system.SELECTED DRAWING: Figure 3G