70 results about "Electron channel" patented technology

The invention discloses a high-conductivity carbon-coated lithium iron phosphate positive electrode material and a preparation method thereof, and relates to the technical field of lithium iron phosphate positive electrode materials, the high-conductivity carbon-coated lithium iron phosphate positive electrode material comprises a spherical lithium iron phosphate matrix, modified lithium niobium vanadate uniformly coating the exterior of the nanoscale spherical lithium iron phosphate matrix, and a composite carbon layer uniformly coating the exterior of the modified lithium niobium vanadate; wherein the spherical lithium iron phosphate matrix has a smaller specific surface area, so that the reduction of side reaction is facilitated, and the interface impedance can be reduced; the modified lithium niobium vanadate can improve the electronic conductivity of the positive electrode material and the diffusion rate of lithium ions; an organic carbon source in the outermost composite carbon layer is carbonized to form a continuous amorphous carbon layer which uniformly coats the surfaces of the particles, so that a basic electron channel is provided, and side reaction of an electrolyte is inhibited; the inorganic carbon source constructs a three-dimensional conductive skeleton, and a long-range conductive network is formed through the bridging effect of nanowires / sheets, so that the interface contact resistance is reduced, and the conductivity of the positive electrode material is improved.

The invention relates to a K / O co-doped and cyano-grafted graphite phase carbon nitride material as well as a preparation method and application thereof. The material comprises three defect types, namely a C-O-C bond formed by a C-N = C bond in an oxygen substituted triazine skeleton, potassium ions existing between layers and cyano groups generated by protonation of amino groups at the edge. According to the material disclosed by the invention, K ions are doped into the g-C3N4 layer to form K-N bridge connection between layers, the material can be used as an electron channel to effectively accelerate electron migration, cyano groups at the edge have relatively strong electron-withdrawing capability and can be used as sites for adsorbing hydrogen ions, and introduced oxygen can be used as active sites for producing H2O2. The three components cooperate with each other to effectively promote transmission of photo-induced electrons and separation of photo-induced electron hole pairs, so that the photocatalytic effect is remarkably improved, and the photocatalyst is an efficient photocatalyst with excellent performance.

The invention discloses a preparation method of an all-solid-state battery unit, the all-solid-state battery unit and an all-solid-state battery module. The preparation method comprises the following steps: 1) pressing and pre-calcining a positive electrode unit to form a sintered laminated body; (2) alternately overlapping at least one negative electrode and the sintered laminated body in the step (1) to form an all-solid-state battery laminated body, and pressurizing the laminated body; (3) carrying out low-temperature primary calcination on the all-solid-state battery laminated body in the step (2); (4) carrying out high-temperature secondary calcination on the all-solid-state battery laminated body obtained in the step (3); wherein the positive electrode unit in the step 1 comprises a solid electrolyte layer, a composite electrode layer and a current collector layer; the composite electrode layer comprises a high ion channel layer and a high electron channel layer. The stable particle space is constructed through multiple times of calcination, the interface impedance between the electrode layer and the electrolyte layer and the interface impedance between the electrode layers are reduced, the densification between the solid electrolyte and the electrode is improved, and the battery capacity and the cycle performance are improved.

To provide a novel method for detecting dislocation that is present in a single crystal silicon specimen after a coating is formed thereto.SOLUTION: A method for detecting dislocation of a single crystal silicon specimen includes a step of detecting a part as dislocation that is observed as a bright line in an electronic channeling image that is acquired by irradiating a surface of a single crystal silicon specimen with an electron beam by a scanning electron microscope, where the irradiation with the electron beam includes a step of irradiating one or more crystal planes of the single crystal silicon specimen with the electron beam in an incidence azimuth within a range of satisfying an electronic channeling condition and the one or more crystal planes include a {220} surface.SELECTED DRAWING: None

The invention relates to a silver-iron diatom modified carbon nitride (AgFe-CN) photocatalytic material capable of synchronously removing organic pollutants and pathogenic bacteria as well as a preparation method and application of the silver-iron diatom modified carbon nitride (AgFe-CN) photocatalytic material, and belongs to the field of environmental chemistry and material science. The catalyst is prepared through a supramolecular coordination-thermal polymerization method, wherein silver and iron are highly dispersed on a porous carbon nitride substrate in a monatomic form. The monatomic Ag and Fe synergistically construct an electron channel, and jointly endow the catalyst with excellent photocatalytic activity. The preparation method comprises the following steps: combining the catalyst with peroxymonosulfate (PMS) to construct an AgFe-CN / PMS / Vis photocatalytic Fenton-like synergistic system; in the system, the catalyst can lead generation of an advanced oxidation system which takes singlet oxygen as a main component and cooperates with superoxide free radicals and high-valence iron oxygen species, so that efficient and synchronous removal of various organic pollutants and pathogenic microorganisms in the water body is realized. The catalyst is simple in preparation process and mild in condition, and the constructed water treatment method is high in efficiency, high in universality and good in stability and has wide application prospects.

The invention relates to a multi-gradient positive electrode and a preparation method thereof, and an all-solid-state battery and a preparation method thereof. Wherein the multi-gradient positive electrode comprises a current collector, a high electron channel layer and a high ion channel layer which are arranged in sequence, and the mass ratios of positive electrode active materials in the high electron channel layer and the high ion channel layer are the same; the mass ratio of the conductive agent in the high electron channel layer is higher than the mass ratio of the conductive agent in the high ion channel layer; and the mass ratio of the solid electrolyte in the high electron channel layer is lower than the mass ratio of the solid electrolyte in the high ion channel layer. The mass ratio of the positive electrode active material in the positive electrode is kept, and the component gradient of the electrode is constructed through the content change of the conductive agent and the solid electrolyte, so that the optimized distribution of the electrode components is realized, the contact between the solid electrolyte and the active material is increased, and the high energy density is kept; therefore, the solid battery gives consideration to both energy density and rate capability, and the cycling stability and the capacity retention ratio of the solid battery are improved.

The invention relates to the technical field of medical X-ray, radio frequency and high-frequency diagnosis and treatment equipment, in particular to a full-static X-ray radiotherapy system and method. The system is composed of an electron source, an accelerating cavity, a two-dimensional deflector, an annular magnet set, a strip-shaped anode target, a multi-leaf collimator set, a vacuum cavity and the like. The electron beam enters the two-dimensional deflector after being accelerated, and any plane angle is obtained under the pure electromagnetic action; and then the X-rays are guided to the strip-shaped anode target along each electron channel in an annular magnetic field of the annular magnet group to bombard and generate the X-rays. The multi-leaf collimator performs spatial modulation on rays to form an irradiation field matched with a target region, so that multi-angle high-precision radiation irradiation without mechanical rotation is realized. The strip-shaped target surface increases the heat dissipation area and cooperates with an efficient cooling loop, so that the dose rate upper limit is improved, and the FLASH radiotherapy requirement is met. The scheme is compact in structure, low in cost and simple and convenient to maintain, overcomes the defects of large size, low efficiency, limited dosage and the like of traditional rotary radiotherapy equipment, and has wide clinical popularization value.

The disclosure relates to a power device (100), comprising: an n-type doped silicon carbide drift layer (103); a p-type doped well (104); an n-type doped source contact (106); an n-type doped substrate (101) acting as a drain contact; and a composite gate dielectric layer (111, 112) comprising a first dielectric layer (111) contributing to a first gate threshold voltage (V1) of the power device and a second dielectric layer (112) contributing to a second gate threshold voltage (V2) of the power device which is occasionally lower than the first gate threshold voltage (V1). The first dielectric layer (111) is overlapping the n-type doped source contact (106) and a first portion of the p-type doped well (104) to enable formation of a first part of a gate electrons channel (107). The second dielectric layer (112) is arranged above the remaining portion of the p-type doped well (104) to enable formation of the remaining part of the gate electrons channel (107) and thus current conduction through the gate electrons channel (107) in case that the second gate threshold voltage (V2) reaches the first gate threshold voltage (V1).

The invention discloses a naphthoquinone-based gas sensitive material, a preparation method and application of the naphthoquinone-based gas sensitive material in an ammonia gas sensor, and belongs to the technical field of gas sensors. The material is composed of divalent metal ions such as copper, nickel and cobalt and a polysubstituted naphthoquinone organic ligand, forms a one-dimensional chain structure, has a high specific surface area, an ordered electron channel and excellent molecular recognition capability, and can detect toxic gases such as ammonia gas at room temperature with high sensitivity. Macroscopic preparation of the material can be realized through solvothermal one-step reaction. Compared with the prior art, the one-dimensional coordination structure and ligand site engineering synergistically improve the carrier transport and molecular recognition capability, can realize continuous, real-time and selective detection of ammonia gas under complex working conditions, and has the advantages of high yield, large-scale preparation and excellent device application prospect.

The invention discloses an intelligent battery charging control method, which relates to the technical field of intelligent battery charging and comprises the following steps of: extracting time continuous characteristics of gradient mutation according to a thermal response dynamic mapping surface, generating an electrochemical polarization direction evolution track and constructing a polarization mutation recognition template; the deviation rate of the electron migration path relative to the ideal conductive path is calculated, and an electron channel correction function is established; the charging current density of the abrupt change area is adjusted in a segmented mode through a correction function, and local potential inversion is weakened through a buffer type current control strategy; and constructing a layered energy distribution mechanism according to a coupling relationship between the polarization direction and the temperature response, and implementing regional control on the charging power. Precise identification and dynamic regulation and control of the polarization direction are realized by constructing a thermal response dynamic mapping surface, local potential inversion and electron aggregation are prevented in advance, energy input and thermal diffusion balance are realized through layered energy distribution and regionalized power control, the charging safety of a battery cell is improved, and the service life of the battery cell is prolonged.

The invention discloses a quantitative electron beam axis combination system for X-ray imaging, and relates to the technical field of transmission electron microscope atomic scale in-situ mechanics. Comprising an anode, a first coil, a second coil, a fourth connecting piece, a flange and a shell, the flange and the fourth connecting piece are each of an axisymmetric structure, the flange is fixedly connected to the shell, the fourth connecting piece is arranged in the flange, the first coil is wound around the top of the fourth connecting piece, and the second coil is wound around the bottom of the fourth connecting piece; the first coil and the second coil are electrically connected with an external power source, a fourth electron channel is arranged in the center of the fourth connecting piece, and electron beams emitted by the electron gun complete axis combination under the action of the first coil and the second coil when passing through the fourth electron channel. In the electron beam excitation process, different axis combination types and axis combination angles can be corrected, and the relation between the coil current size and coil configuration and the excitation magnetic field size and the relation between the deflection angle and the coil current size during axis combination are fundamentally established.

The invention provides a preparation method of a terahertz traveling wave tube based on an electron beam gasification chambering technology and the terahertz traveling wave tube, and the preparation method comprises the steps: machining an initial electron channel in a high-frequency interaction assembly, and enabling the diameter of the initial electron channel to be smaller than the design diameter of an electron beam; centering and welding the high-frequency interaction assembly and the electronic gun; carrying out vacuumizing operation on the terahertz traveling wave tube through a vacuum exhaust furnace; the electron gun is started, the anode is used for accelerating the electrons for the first time, high voltage is applied to the tube body of the high-frequency interaction assembly for accelerating the electrons for the second time, and the high voltage is larger than the voltage of the anode; wherein the material on the peripheral side of the initial electron channel is gasified and extracted by using the electrons subjected to secondary acceleration.

The invention discloses a catalyst for wastewater COD (Chemical Oxygen Demand) in-situ degradation and a preparation method of the catalyst, and belongs to the field of catalysts. A four-stage synergistic catalysis system of a metal phthalocyanine active matrix, a thiophene conjugated bridging chain, a cyclodextrin functional modification layer and a cross-linked network skeleton is adopted; the catalyst has the characteristics of controllable reaction path, designable product structure and efficient catalytic performance, a metal phthalocyanine compound matrix is used as a core active unit, a catalytic active center is formed through metal-nitrogen coordination, and a thienyl bridged ring structure is used as an electron transfer carrier, so that the catalytic activity of the catalyst is improved. A continuous electron channel for connecting a phthalocyanine active center and a cross-linked network is constructed through a conjugated system, electron migration is accelerated, a cyclodextrin functional modification layer serves as a performance optimization unit, and an adaptive bridge of the catalyst and a wastewater system is constructed through subject-object inclusion and hydrophilic modification, so that the performance of the catalyst is improved. Finally, a synergistic catalysis system with active center capable of efficiently generating active oxygen, conjugate bridging capable of guaranteeing electron transfer and cyclodextrin capable of optimizing application performance is formed.

The application discloses a grating type gate voltage structure-based electrical anisotropy device and a preparation method thereof. A grating type gate voltage electrode structure is arranged on a heterojunction to establish a size-in-situ adjustable electric potential field, form an artificial stripe phase electron channel, and realize in-situ regulation and control of horizontal resistance and vertical resistance of a lower two-dimensional electron gas. Great positive magnetoresistance and negative magnetoresistance effects are realized in two mutually perpendicular directions, and great electrical anisotropy is regulated and controlled. The grating type gate voltage electrode structure is grown on a cross-shaped semiconductor heterojunction, great planar electrical anisotropy in different current directions under a magnetic field can be realized, the size of electrical anisotropy of the device can be in-situ regulated and controlled by changing the size of the gate voltage, and in addition, the method has the advantages of simple micro-processing technology, good universality, large-area batch production and the like.

According to the semiconductor device and the preparation method thereof provided by the invention, the barrier layer with the etching selection ratio (generally higher etching selection ratio) is formed in the barrier layer, so that the barrier layer not only has the effect of the barrier layer, but also has the effect of the etching stop layer; the problem that an etching interface between an existing gate material layer and a barrier layer is difficult to control due to the fact that the gate material layer is difficult to etch is solved, an etching interface between a second barrier layer and a barrier layer is changed, etching can be effectively guaranteed to be stopped on the surface of the barrier layer based on the excellent etching selection ratio effect of the barrier layer, and the etching efficiency is improved. The potential barrier layer composed of the barrier layer and the first potential barrier layer is reduced or even prevented from being damaged to influence the performance of an electron channel below the potential barrier layer; and meanwhile, a second barrier layer is additionally arranged below the gate structure, and the concentration of two-dimensional electron gas in the channel can be regulated and controlled by freely designing and adjusting parameters such as material, thickness and doping of the second barrier layer, so that the applicability of the device is widened.

The invention relates to a semiconductor device and a preparation method thereof. The semiconductor device comprises a substrate; an epitaxial substrate is formed on the surface of the substrate; the gate structures are arranged on the surface of the epitaxial substrate and the surface of the substrate, and the gate structures are located on the surface and the side wall of the epitaxial substrate. Compared with the prior art, in the structure of the semiconductor device, the circulation area of the electron channel is larger, more electrons can circulate, the current is increased, and the performance of the semiconductor device is improved.

The embodiment of the invention discloses electrode slurry and a preparation method thereof, a pole piece and a supercapacitor, and belongs to the technical field of supercapacitors. The invention provides a preparation method of electrode slurry, and the preparation method comprises the following steps: dispersing an active substance, graphene and a binder in a solvent to obtain a glue solution; and mixing the glue solution with the carbon nanotubes to prepare the electrode slurry. The active substance and the graphene are mixed, the graphene and the active material form surface contact, the interface contact resistance is reduced, meanwhile, the graphene can be connected with a plurality of active substances, and an electron channel is provided for transmission of electrons among different particles; the lamellar structure of the graphene creates a two-dimensional nano channel for the embedding and emigration of ions, and guides the ions to be uniformly distributed on the surface of the active material, thereby improving the dynamic performance. And the obtained glue solution is mixed with the carbon nanotubes, and the carbon nanotubes are connected with different active substances to form a three-dimensional conductive network, so that the high-rate performance is further improved.

The present invention relates to a super junction SOI-LDMOS device with a low resistance N-type electron channel, and belongs to the field of semiconductor technology. The device includes a source contact region, a gate-source isolation oxide layer, a gate oxide layer, a gate contact region, a field oxide layer, a drain contact region, a source P+ region, a source, a drain, a P-body, an N-type drift region, a buried oxide layer, a substrate, a low resistance N-type electron channel and a super junction region; the left side of the low resistance N-type electron channel is adjacent to the upper right side of the P-body, the right side is close to the left side of the drain, and the top is adjacent to the right side below the gate oxide layer and the bottom of the field oxide layer from left to right, and the bottom is adjacent to the super junction region; the left side of the super junction region is adjacent to the lower right side of the P-body, the right side is adjacent to the N-type drift region, and the bottom is adjacent to the buried oxide layer. The present invention improves the concentration of the drift region and reduces R on,sp At the same time, it can also increase the breakdown voltage.

The invention relates to the technical field of lithium ion batteries, in particular to a pre-lithiation negative electrode with a spontaneously formed lithium-containing compound interface layer. The pre-lithiation negative electrode comprises a negative electrode, a lithium-containing compound interface layer positioned on the negative electrode and a metal lithium layer for pre-lithiation. And the lithium-containing compound interface layer is generated through spontaneous reaction of metal lithium and gas adsorbed on the surface of the negative electrode. One part of the active material layer and the metal lithium layer are in direct contact to form an electron channel, the other part of the active material layer and the metal lithium layer are separated by a lithium-containing compound interface layer, and the interface layer serves as a lithium ion channel in the pre-lithiation process. According to the method, manual introduction of a negative electrode pre-lithiation interface layer is avoided, and meanwhile, deep and uniform pre-lithiation of the negative electrode can be realized. The production cost is greatly reduced, and meanwhile, the first-circle coulombic efficiency and the cycle performance of the battery are improved.

The embodiment of the utility model discloses a light-emitting device, for example, comprising a first epitaxial structure which comprises an N-type GaN layer, a light-emitting layer and a P-type GaN layer which are arranged in sequence; the second epitaxial structure comprises an electron channel layer and a barrier layer which are arranged in sequence; and a connection layer; wherein the connection layer is connected between the first epitaxial structure and the second epitaxial structure, the material of the connection layer comprises GaN, and the thickness of the connection layer is 200 to 800 nanometers. According to the embodiment of the utility model, the GaN connecting layer is arranged to integrate the two epitaxial structures on one light-emitting device, so that the light-emitting device provided by the embodiment of the utility model not only realizes light emitting, but also realizes constant-current light emitting, and can more flexibly solve the problem that the head and the tail of an existing LED lamp head are uneven in light emitting brightness; and the two epitaxial structures are integrated on one light-emitting device, so that the light-emitting device provided by the embodiment of the utility model can be more flexibly applied to a light-emitting device needing constant current.

The invention discloses a film layer monitoring device and epitaxy equipment, the film layer monitoring device is used for vapor phase epitaxy equipment, and the film layer monitoring device comprises an electron beam emission mechanism which comprises an electron emission assembly and an electron channel; the electron emitting assembly is used for generating electron beams; an inlet of the electron channel is communicated with an emitting end of the electron emitting assembly, and an outlet of the electron channel is arranged at a position close to the edge of the wafer; electron beams generated by the electron emitting assembly are glanced to the surface of the wafer through the electron channel so as to be diffracted on the surface of the wafer to form diffracted electron beams; a receiving end of the electron beam receiving mechanism is located in the epitaxial chamber; the electron beam receiving mechanism is configured to capture diffracted electron beams and convert the diffracted electron beams into quantizable signals; the electron beam receiving mechanism is further configured to perform in-situ monitoring on the wafer film layer based on the quantizable signal. The crystal quality and the deposition thickness of the film layer can be monitored in situ in the film growth process, and high-quality imaging of electron diffraction signals can be ensured.

The invention relates to the technical field of glucose electrochemical sensors, in particular to an OECT flexible glucose sensor with a vertical structure and a preparation method of the OECT flexible glucose sensor with the vertical structure, the sensor adopts a vertical structure design, a drain electrode, a source electrode and a channel are vertically arranged, the integration level of the sensor is improved, and the size of the sensor is reduced. Meanwhile, the electrochemical performance and the mechanical performance of the PEDOT: PSS material are improved by doping PVA, and the electrochemical performance of the channel layer is improved. Due to the adoption of the vertical structure, the PEDOT: PSS-PVA composite material can form a nano-scale flexible channel layer through a high-speed spin-coating process, so that an electron channel between a drain electrode and a source electrode is effectively shortened, the response speed of the device is remarkably accelerated, the modulation efficiency of channel current is greatly improved, the transconductance of the channel layer is effectively improved, and the performance of the device is improved. And meanwhile, the flexibility of the channel layer is also improved, so that the channel layer still has a relatively good transconductance retention rate under the action of high-cycle stress, and the sensor can be applied to application scenes such as wearable equipment and the like.

The present invention discloses a high-conductivity carbon-coated lithium iron phosphate cathode material and a preparation method thereof, which relates to the technical field of lithium iron phosphate cathode materials. It includes a spherical lithium iron phosphate matrix, modified lithium niobium vanadate uniformly coated on the outside of the nanoscale spherical lithium iron phosphate matrix, and a composite carbon layer uniformly coated on the outside of the modified lithium niobium vanadate. Among them, the spherical lithium iron phosphate matrix has a smaller specific surface area, which helps to reduce side reactions and can reduce the interfacial impedance. The modified lithium niobium vanadate can improve the electronic conductivity of the cathode material and the diffusion rate of lithium ions. After the organic carbon source in the outermost composite carbon layer is carbonized, it forms a continuous amorphous carbon layer, uniformly coating the particle surface, providing a basic electron channel and suppressing side reactions of the electrolyte. The inorganic carbon source constructs a three-dimensional conductive skeleton, forms a long-range conductive network through the bridging action of nanowires / nanosheets, reduces the interfacial contact resistance, and improves the conductive performance of the cathode material.

The invention belongs to the technical field of microwave electronics and electric vacuum, and particularly relates to a groove loading folded waveguide slow-wave structure with a vertical electronic channel, which comprises a shell, a slow-wave structure is arranged in the shell, and the slow-wave structure is formed by connecting a series of arc bent waveguides and straight waveguides end to end. The waveguide is equivalent to a folded waveguide formed by bending a rectangular waveguide in a U shape; an expanding groove which penetrates through the straight waveguide part and is self-adaptive along with bending deformation is formed in the middle line of the folded waveguide wall, and the expanding groove of the straight waveguide part is communicated with the folded waveguide cavity to form an electron beam channel. According to the invention, the expansion groove and the folded waveguide are conformally arranged, so that the maximum expansion of the size of an electron beam channel is realized, the electron beam with larger size can be borne, and the working power is improved. A coupling impedance analysis result shows that the folded waveguide slow wave structure has higher coupling impedance and can effectively improve gain and output power.

The invention provides a niobium-based negative electrode material and a preparation method thereof, and the preparation method comprises the following steps: S1, dissolving and mixing a chromium source, a zinc source, a titanium source, an aluminum source, a niobium source and citric acid to obtain mixed slurry; s2, drying the mixed slurry to obtain dried mixed material powder; and S3, calcining the mixed material powder to obtain the niobium-based negative electrode material. In the preparation process of the niobium-based negative electrode material, various transition metals such as a chromium source, a zinc source, a titanium source and an aluminum source are introduced at the same time, and due to the fact that different transition metal ions have different valence states and electronic structures, the introduction of the various transition metals can provide additional electronic channels and ion diffusion paths, and the performance of the niobium-based negative electrode material is improved. Therefore, the electronic and ionic conductivity of the niobium-based negative electrode material is improved.

An electron gun includes a cathode including an electron emitting portion, an extraction electrode for extracting electrons emitted from the electron emitting portion, and a focusing electrode for focusing the electrons extracted by the extraction electrode. The focusing electrode includes an outside electrode having a tubular shape, and an inside electrode arranged inside the outside electrode. The inside electrode defines a first space having a columnar shape, and includes a first surface on a side of the cathode, and a second surface on an opposite side of the first surface. An inside surface of the outside electrode and the second surface of the inside electrode define a second space. The inside electrode includes an electron passage hole, and a communicating portion which makes the first space and the second space communicate with each other.

The invention belongs to the technical field of air batteries, and particularly relates to a modified carbonized bamboo composite material and a preparation method and application thereof. According to the method, bamboo is used as a raw material to prepare carbonized bamboo, on one hand, the bamboo has high carbon yield, the obtained carbonized bamboo has rich pore structures, ideal interconnected and ordered mass transfer and electron channels can be provided, and meanwhile, the carbonized bamboo is stable in structure, high in mechanical strength and good in toughness and can serve as a self-supporting base body; therefore, when the obtained modified carbonized bamboo composite material is used as an electrode, the modified carbonized bamboo composite material has relatively good stability and durability. Furthermore, the metal organic framework material is loaded on the carbonized bamboo, so that active sites in the composite material can be enriched, the intrinsic activity can be improved, the transfer of electrons can be promoted, and the catalytic performance of the composite material can be further improved.

The application discloses a kind of single-atom nickel modified crystalline carbon nitride nanowire array photocatalytic material and preparation method and application thereof, single-atom nickel is uniformly dispersed on crystalline carbon nitride nanowire array.Its preparation method is: crystalline carbon nitride nanowire array is suspended in deionized water to obtain suspension;Nickel nitrate solution is added dropwise to the above suspension, and single-atom nickel modified crystalline carbon nitride nanowire array photocatalytic material is obtained after stirring and annealing.The single-atom nickel modified crystalline carbon nitride nanowire array photocatalytic material of the application has high crystallinity, realizes the minimization of defects in structure, inhibits electron hole recombination, expands the light absorption range, accelerates charge transfer and provides more active sites for catalytic reaction, vertical nanowire array structure has direct one-dimensional electron channel, can realize effective charge transport and shorten charge transport path, thereby improve the photocatalytic activity of catalyst, promote the photocatalytic degradation effect, and can be applied to the degradation of antibiotics in wastewater.

SPAD device with: a silicon substrate (102) with a recess (104) in a top side (102u) of the silicon substrate (102); a p-region (106) which is located in the silicon substrate (102) under a bottom of the recess (104); an n-avalanche region (108) located in the silicon substrate (102) below the p-region (106) and meeting the p-region (106) at a pn junction (110); a germanium region (112) which is arranged in the recess (104) above the pn junction (110); and an intrinsically conductive silicon region (118) located between an upper part of the p-region (106) and a lower part of the germanium region (112), wherein the intrinsically conductive silicon region (118) is configured to act as an electron channel extending over the entire distance between the pn junction (110) and the germanium region (112), wherein the germanium region has the following: an upper germanium region with a first p-doping concentration; and a lower germanium region with a second p-doping concentration, wherein the second p-doping concentration is lower than the first p-doping concentration, and the SPAD device further features the following: a sidewall germanium region that extends continuously along an outer sidewall of the germanium region and traverses the upper germanium region and the lower germanium region.

The application discloses an oxide sintered body and a preparation method thereof, an oxide target material and application, and relates to the technical field of semiconductors. By introducing rare earth oxides and a second metal compound into an indium oxide sintered body, the second metal compound being a metal oxide and / or a metal fluoride, on the one hand, a coupling electron channel can be formed with the indium electron orbit of the indium oxide, the characteristics of a thin film made of the sintered body can be improved, and the performance of a device can be improved; on the other hand, the rare earth oxides form small crystal grains embedded in the gaps of the main body material crystal grains, a dense sintered body is formed, and therefore a highly dense ceramic target material can be obtained. The oxide sintered body provided by the application can obtain a sintered body or a target material with high density by optimizing the composition and the preparation method, and is beneficial to making the grain size controllable and the distribution controllable.