21 results about "Electron trapping" patented technology

This invention discloses a deep defluorination agent and its application method, specifically relating to the field of defluorination agents (GMS-FS series products). It includes a valence-state switching active phase, a reaction interface building component, a dynamic electronic regulation component, and a structure adjustment and protection component. The valence-state switching active phase provides a reversible valence-state transition reaction center, achieving specific capture of fluoride ions through an electron trapping effect when interacting with them. The reaction interface building component forms a polar gradient interface layer on the surface of the defluorination agent, guiding fluoride ions to migrate towards the active center and locally enrich them, thereby improving defluorination efficiency. By constructing a rare metal valence-state switching active phase with La2O3 and UO2 as its core, combined with a polar gradient interface guiding layer and a dynamic electronic regulation mechanism, preferential migration and specific capture of fluoride ions are induced in a multi-ion coexistence environment, achieving stable deep defluorination under high salinity and highly competitive ion conditions.

The invention relates to the technical field of photocatalysis, in particular to a Yb < 3 + > / Er < 3 + > co-doped full-spectrum response Ti-MOF / BiOBr S type heterojunction as well as a preparation method and application thereof. The invention provides an S-type heterojunction composite catalyst, which is mainly prepared from squaric acid, a titanium source, Yb < 3 + > and Er < 3 + > doped BiOBr nanosheets, and the mass ratio of the BiOBr nanosheets in the catalyst is 60%-95%. The high specific surface area of the IEF-11 is beneficial to pollutant enrichment, and the addition of the nanosheet can expand the photoresponse range and can be used as an electron trapping agent, so that the sunlight utilization rate and the photocatalytic performance are improved; the constructed S-type heterojunction can promote separation of photon-generated carriers, and meanwhile, the strong oxidation-reduction capacity of a composite system is reserved. The catalyst has the capabilities of full-spectrum response, efficient degradation of organic pollutants and inactivation of microorganisms, and has a wide application prospect.

The invention relates to the technical field of photocatalytic materials, in particular to a covalent organic framework material as well as a preparation method and application thereof. The covalent organic framework material has a repeating unit with a structure as shown in a formula I. A covalent organic framework material based on a benzothiadiazole (BT) core is modified through an electron donating group-OCH3, a non-uniform p-pi conjugated system is further constructed through the synergistic effect of-F and-OCH3, the electronic structure of the COF material is accurately regulated and controlled, a built-in electric field is enhanced, exciton binding energy is reduced, and the shallow trap life is prolonged; according to the preparation method, the formation of deep electron traps and charge recombination are effectively inhibited, the photocatalytic performance is improved, a novel material with enhanced performance is provided for repairing a radioactive pollution environment, and uranium (VI) reduction can be efficiently catalyzed under an illumination condition.

The invention discloses a lithium-doped crystalline silicon photovoltaic cell, a silicon wafer, a crystal ingot and a doping method thereof, and belongs to the field of photovoltaic cells. A proper amount of impurity lithium and impurity boron are combined and doped to form p-type first lithium silicon, the electronegativity of the lithium element is only 0.98, when space high-energy irradiation is not encountered, doped lithium saturates holes of part of boron atoms, and when space high-energy irradiation is encountered, on one hand, outer layer electrons of lithium are easily attracted by an electron trap, and on the other hand, the outer layer electrons of lithium are easily attracted by an electron trap; passivation of electron traps and'release 'of boron atom holes are objectively formed, and as a result, multi-sub-holes of the p-type silicon material are increased, and the conductivity is increased instead of being reduced; on the other hand, due to the fact that positive lithium ions accompany the electron trap, the probability that the electron trap captures a photo-generated minority carrier hole is greatly reduced, and the photoelectric conversion efficiency of the space battery can be improved.

The invention discloses an OV-Fe3O4 / bamboo charcoal composite photocatalyst rich in oxygen vacancies, a preparation method of the OV-Fe3O4 / bamboo charcoal composite photocatalyst and application of the OV-Fe3O4 / bamboo charcoal composite photocatalyst in photodegradation of orlistat. According to the OV-Fe3O4 / bamboo charcoal composite photocatalyst rich in the oxygen vacancies, the oxygen vacancies can serve as electron traps, photo-induced electrons are rapidly captured, the service life of current carriers is prolonged, and the charge utilization efficiency is improved. SEM, XRD and FT-IR prove that a semiconductor-carbon material heterojunction is formed between OV-Fe3O4 rich in oxygen vacancies and bamboo charcoal, which is beneficial to the cooperation of the oxygen vacancies and the high specific surface area and pore structure of the bamboo charcoal, improves the catalytic efficiency of adsorption-enrichment-photodegradation of pollutants, and is especially suitable for low-concentration orlistat wastewater treatment. In addition, due to the structural design, the oxygen vacancy activity of OV-Fe3O4, the adsorption enrichment capacity of bamboo charcoal and the magnetic separation performance form a collaborative closed loop, and a material basis with high efficiency and practicability is provided for large-scale photocatalytic water treatment.

The application discloses an array substrate, a display panel and a preparation method of the array substrate. The method comprises the following steps: sequentially forming a gate electrode and a gate insulating layer on a substrate; forming an active region on the gate insulating layer, wherein the active region is made of an oxide semiconductor material, and the active region is doped with an electron trapping element as a positive center; forming a source / drain electrode on the active region, and forming an insulating protective layer on the source / drain electrode. The application provides an array substrate, a display panel and a preparation method of the array substrate, which have better light stability and better performance.

The application provides a cyclic olefin copolymer-furfuryl dihydrazone composite dielectric film and a preparation method thereof. The composite dielectric film comprises a cyclic olefin copolymer and furfuryl dihydrazone dispersed in the cyclic olefin copolymer, and the mass of the furfuryl dihydrazone is 0.05% to 0.3% of the mass of the cyclic olefin copolymer. The preparation method comprises the following steps: mixing and dissolving the cyclic olefin copolymer and the furfuryl dihydrazone in toluene; casting the blended solution into a film, and obtaining the film by volatilizing the toluene; and performing heat annealing treatment on the film in a vacuum drying box and peeling off the film. The energy level difference between the furfuryl dihydrazone and the cyclic olefin copolymer is used to construct deep electron traps in the film, and high-energy electrons are captured to inhibit carrier transport. Meanwhile, the intermolecular hydrogen bond is used to increase the molecular chain spacing. The application effectively improves the breakdown strength, discharge energy density and thermal stability of the composite film in a high-temperature environment, and avoids interface defects caused by inorganic fillers.

This invention discloses a lithium-doped crystalline silicon photovoltaic cell, silicon wafer, ingot, and doping method thereof, belonging to the field of photovoltaic cells. By combining appropriate amounts of impurity lithium and impurity boron with lithium to form p-type first lithium silicon, lithium, with an electronegativity of only 0.98, saturates some of the boron atom holes when not exposed to high-energy space radiation. Upon exposure to high-energy space radiation, on the one hand, the outer electrons of lithium are easily attracted by electron traps, objectively passivating the electron traps and "releasing" the boron atom holes. As a result, the majority carrier holes in the p-type silicon material increase, and the conductivity increases instead of decreasing. On the other hand, due to the "accompaniment" of positive lithium ions to the electron traps, the probability of the electron traps capturing photogenerated minority carrier holes is greatly reduced, which is beneficial to improving the photoelectric conversion efficiency of the space cell.

The application discloses a kind of based on fluorenyl small molecule molecular field effect transistor memory and preparation method thereof, belong to information storage technical field.The charge capture layer of the memory is made into single film by the way of solution processing after being made by fluorenyl small molecule material 3Ph-TrH, and the spiro structure of small molecule material 3Ph-TrH effectively increases steric hindrance, inhibits the effect of charge leakage, with excellent hole trapping capacity and electron trapping capacity, so that memory device shows bipolar storage (42.8V), high stability, good resistance and other excellent performance, the mobility of the single-molecule thin film device reaches 0.35cm 2 V ‑1 s ‑1 , switch ratio exceeds 10 5 , higher maintenance performance;In addition, the preparation process of the memory device is simple, can greatly reduce production cost, is conducive to the popularization and application of this kind of device.

The application provides a weak light detection structure and a preparation method thereof. The weak light detection structure comprises an insulating layer, a floating gate layer formed on the insulating layer, and an active layer formed on the floating gate layer; a surface of the insulating layer in contact with the floating gate layer is formed with a material layer as an electron trap state, the floating gate layer is composed of a matrix layer and lead sulfide quantum dots dispersed in the matrix layer, the material of the matrix layer is selected to be an insulating polymer material, and the lead sulfide quantum dots can be uniformly dispersed in the matrix layer. The scheme of the application does not require the energy level matching of the active layer and the charge storage layer, and the device mobility and stability are not affected. Meanwhile, the material of the active layer can grow on the flat surface of the floating gate layer to form a highly ordered crystalline thin film, which is beneficial to improve the device mobility and reduce the sub-threshold swing, thereby increasing the photocurrent and improving the weak light detection capability of the device.

The present application belongs to the technical field of electrochemistry and environmental wastewater treatment, and discloses a method for electrochemically degrading antibiotics by MWCNTs-P-NiCu monatomic catalyst combined with Ti / SnO2. A MWCNTs-P-NiCu monatomic catalyst modified carbon felt electrode is prepared, and in the electrocatalytic reaction, the electrode surface promotes the generation of a large number of active free radicals ROS under the synergistic action of the interface electric field and the electron migration channel. The surface of the modified Ti / SnO2 anode is rich in lattice oxygen. The loss of lattice oxygen will form oxygen vacancies, which act as electron trapping centers or active sites, further enhancing the conductivity and catalytic performance of the material. The composite degradation system prepared by the present application can effectively degrade NOR wastewater, and the degradation rate and defluorination rate can reach 100% in 2-3 h. The degradation rate of TOC reaches 78% in 6 h. After 10 cycles, the degradation rate remains 89.0%, effectively reducing the toxicity of NOR.

The application discloses a kind of monodisperse metal loaded tungsten oxide nanowires and its preparation method and application, tungsten oxide nanowire is mixed uniformly by impregnation method and soluble metal salt, then it is placed in H2 / Ar atmosphere and is burned to obtain monodisperse metal / tungsten oxide;The metal is at least one of Fe, Cu, Co.This catalyst has abundant oxygen vacancy, as electron trap center, is favorable to nitrogen adsorption and activation, significantly improves the activity of photocatalytic nitrogen fixation;Single dispersion metal as new nitrogen adsorption site and active site is loaded simultaneously, is favorable to NRR reaction, significantly improves the performance of photocatalytic nitrogen fixation.

The invention discloses a side chain screening method and system for improving the insulating property of an insulating polymer, and belongs to the technical field of chemical engineering. Determining an energy gap value, an electron trap energy level, a hole trap energy level, a free volume element and a maximum hole diameter and a maximum phonon frequency of each molecular model; determining a trap depth sum through an electron trap energy level and a hole trap energy level, and weighting the trap depth sum with an energy gap value to determine an electron injection factor; determining the number of free volume intervals by dividing the free volume elements into volume intervals; and determining a carrier acceleration factor according to the free volume interval number, the maximum hole diameter and a preset critical diameter, further constructing a breakdown potential comprehensive scoring model taking the breakdown potential index as output, and carrying out comprehensive scoring on the breakdown potential of each molecular model. The method can accurately and comprehensively measure the potential of the alternative side chain for improving the breakdown performance of the polymer.

The present disclosure provides a thin film light-emitting device, a preparation method thereof and a display panel, and belongs to the technical field of display. The thin film light-emitting device comprises an anode, a hole transport layer, a light-emitting layer and a cathode which are sequentially stacked; wherein the hole transport layer comprises a hole transport material and an electron trap material; the LUMO energy level of the electron trap material is less than the LUMO energy level of the hole transport material. The thin film light-emitting device can improve the stability of the hole transport layer.

The application relates to the technical field of nanomaterial preparation, in particular to a method for synthesizing a zinc-sulfur double-vacancy Zn3In2S6 photocatalyst, wherein specific-volume ammonia water is mixed with deionized water to form a solvent, zinc sulfate, indium trichloride and thioacetamide precursors are added, and after uniform stirring, one-step hydrothermal reaction is carried out at 160 DEG C for 12 hours, and the product is obtained through centrifugal washing and vacuum drying. Through the coordination induction effect of ammonia water, zinc vacancies and sulfur vacancies are in-situ constructed in the Zn3In2S6 crystal lattice, the introduced defect energy level is used as an electron trap to capture photo-generated electrons, carrier recombination is inhibited, and the surface active site is increased. The application can significantly improve the hydrogen production activity under visible light, the hydrogen evolution rate is 2.25 times that of the hydrogen production activity without adding ammonia water, and the application has the advantages of simple process route, excellent catalytic performance and strong structural stability.

An image sensor device includes a capacitor structure that includes, as a dielectric material, an amorphous composition that includes a mixture of metal oxides. The amorphous composition replaces crystalline metal oxide dielectric layer stacks used in other approaches. The amorphous composition reduces or prevents interface defects and electron traps as compared to the crystalline metal oxide dielectric layer stacks. A single amorphous layer avoids the interfaces between metal oxides and metal oxide crystal defects in which the electron traps can be easily formed. The resulting image sensor device exhibits reduced lag as compared to other approaches that use crystalline metal oxide dielectric layer stacks. In addition, using the single amorphous layer including the mixture of metal oxides increases capacitance of a corresponding capacitor structure as compared to other approaches that use the crystalline metal oxide dielectric layer stacks.

The invention discloses a preparation method of mixed insulating oil based on surface modified nanoparticles, relates to the technical field of insulating material production and processing, and solves the problems of poor heat-conducting property and insufficient dielectric strength of the existing vegetable insulating oil. Comprising the steps of preparation of nano ZnO, surface modification of nano ZnO, surface modification of nano SiC powder, preparation of mixed oil and preparation of mixed insulating oil, the dispersion stability of nano particles in the mixed insulating oil is improved, a large number of electron traps can be formed in the mixed insulating oil, migration of charged particles is reduced, and the dielectric property of the insulating oil is improved; the preparation method has the advantages of simple steps and good modification effect, is beneficial to industrial production and large-scale application of the mixed insulating oil, can meet the requirements of transformers on the heat-conducting property, insulating property and nanoparticle dispersion stability of the insulating oil, and solves the problem of poor dispersion stability of binary nanoparticles in the insulating oil.

The invention discloses a dynamic cross-linked polypropylene cable insulating material with thermal mechanical stability and a preparation method thereof, and belongs to the technical field of high-voltage cable insulating materials. Polypropylene is used as a matrix, reactive sites are introduced through maleic anhydride grafted polypropylene, then a polysulfhydryl compound and isocyanate react under the catalysis of organic base to generate thiocarbamate dynamic covalent bonds, and the material is endowed with reprocessing performance. Meanwhile, small organic molecules or low polymers containing strong polar groups are introduced into the system to serve as deep trap regulation and control units, the small organic molecules or low polymers are uniformly dispersed in a matrix to form deep-energy-level electron trapping centers, electrons injected under the action of an electric field can be effectively trapped by the traps, the concentration and mobility of free carriers are greatly reduced, and the photoelectric conversion efficiency is improved. And finally, the polypropylene cable insulating material with relatively high thermal mechanical property, deep trap regulation and control capability and reprocessing property is obtained.

To provide a semiconductor device suitable for high reliability and high-speed operation.SOLUTION: A semiconductor device comprising: a first conductor; a second conductor; a first insulator; a second insulator; a third insulator; a semiconductor; and an electron trap layer, wherein the semiconductor comprises a channel formation region, and wherein the electron trap layer comprises a region overlapping with the channel formation region with the second insulator therebetween, A semiconductor device comprising: a first conductor; a second conductor; a first insulator; a second insulator; a third insulator; a semiconductor; and an electron trap layer, wherein the semiconductor comprises a channel formation region, and wherein the electron trap layer comprises a region overlapping with the channel formation region with the third insulator therebetween, wherein the second conductor does not include a region overlapping with the channel formation region.SELECTED DRAWING: Figure 5

The invention discloses a preparation method for co-doping modification of titanium dioxide through rare earth and precious metal, and relates to the technical field of inorganic functional materials and photocatalysis, and the preparation method comprises the following steps: S1, sol preparation; s2, doping introduction; s3, aging and drying; and S4, calcining and crystallizing. By introducing e < 3 + > / Ce < 4 + >, a new impurity energy level is formed in a forbidden band of TiO2, a band gap is effectively narrowed, and the light response range of the material is expanded to a visible light region. Meanwhile, the Ag nanoparticles not only can strongly absorb visible light through the surface plasma resonance effect, but also can be used as an efficient electron capture center to quickly transfer electrons on a TiO2 conduction band to the Ag nanoparticles, so that the compounding of electron-hole pairs is greatly inhibited. Electron synergistic transfer possibly exists between Ce and Ag, charge separation is further promoted, and the synergistic catalytic effect of '1 + 1gt, 2' is achieved.

This invention belongs to the field of luminescent materials technology, and discloses long-afterglow nanoparticles, nanoprobes, a dual-probe system, and a detection method. The long-afterglow nanoparticles have the general chemical formula Li. x Zn 1‑x Ga2O4:Cr³⁺, where x ranges from 0.1 to 0.5. The long afterglow nanoparticles provided by this invention, through Li… + Partial replacement of Zn 2+ An innovative doping strategy was developed, successfully solving the problem of hydrothermal synthesis of ZnGa2O4:Cr 3+ The industry challenge of poor luminescent performance of PLNPs. Li + The doping effectively optimized the lattice structure and the concentration and depth of electron traps, resulting in a breakthrough enhancement in the afterglow intensity and average lifetime of the material in the near-infrared window. A nanoprobe was obtained by modifying the surface of long-afterglow nanoparticles with a hydroxyethyl deacetylated chitosan layer, exhibiting a unique pH-responsive charge-transfer capability. This probe was used for the detection of polystyrene nanoplastics, demonstrating a low detection limit and a wide linear range.