35results about How to "Good electron transport ability" patented technology

The invention provides a perovskite thin-film solar cell with a three-dimensional ordered mesopore support layer. The perovskite thin-film solar cell with the three-dimensional ordered mesopore support layer comprises a transparent conducting substrate, a compact layer, the three-dimensional ordered mesopore support layer, a perovskite light absorbing layer, a hole transporting layer and a counter electrode layer which are sequentially laminated to form a laminating layer, wherein the three-dimensional ordered mesopore support layer is filled with the perovskite light absorbing layer, the hole transporting layer and the counter electrode layer; the three-dimensional ordered mesopore support layer is of a three-dimensional ordered mesopore material prepared by using water-soluble colloidal crystal microspheres as a template; the aperture dimension of the three-dimensional ordered mesopore support layer depends on the dimension of the water-soluble colloidal crystal microspheres; and the perovskite light absorbing layer is prepared through materials of an ABXmY3-m type crystal structure. The perovskite thin-film solar cell has the advantages that the three-dimensional ordered mesopore support layer of which the aperture is uniform and adjustable, the specific surface area is relatively large and a good electronic transmission channel is arranged is provided and reaches high photoelectric conversion efficiency and outstanding repeatability and stability; and the preparation method has the advantages that the conditions are mild and controllable, the preparation method is simple and needs a little cost, and large-scale commercial production can be popularized.

The invention discloses a metal oxide micro nanotube capable of being used as an electrode material of a supercapacitor. Metal oxide components in the tube are mainly one or the compound of alpha-Fe2O3, Co3O4 and NiO. A preparation method for the metal oxide micro nanotube comprises the following steps of adding polyvinylpyrrolidone into absolute ethyl alcohol; fully mixing to fully dissolve; adding at least one of ferric salts, cobalt salts and nickel salts into the dissolved PVP (Polyvinyl Pyrrolidone) solution; then adjusting the viscosity and fully stirring to obtain spinning solution; stretching the spinning solution in an electrostatic spinning machine to form silks; placing the silks in a baking oven for drying and sintering to obtain the metal oxide micro nanotube. The metal oxide micro nanotube disclosed by the invention has the advantages of high porosity, high charging / discharging speed, long cycle life, high electronic transmission capacity and the like.

The invention relates to a photocatalytic water splitting material, and particularly relates to a Z-configuration visible light catalytic decomposing water composite material and a preparation method thereof. The preparation method comprises the steps of dropwise adding a silver nitrate solution into flower-like molybdenum disulfide dispersion liquid under stirring, and stirring to obtain a mixed precursor solution; weighing and dissolving phosphate into deionized water to obtain a phosphate solution; under stirring, adding a sodium phosphate solution into the prepared mixed precursor solution, enabling the solution to gradually generate greyish-green sediments along with the adding of sodium phosphate, continuously stirring the mixed solution for 3h after dropwise adding, finally washing the reaction sediments with deionized water and ethyl alcohol respectively for three times and vacuum drying. The bent basal plane formed by flower-like molybdenum disulfide can become the main active site of a light-catalyzed reaction, and is stronger than a molybdenum disulfide nanosheet within the absorption range of visible light, and the performance of the composite photocatalyst can be further improved.

Organic materials and organic electroluminescent apparatuses using the same are provided. The structural general formula of the materials is shown below, wherein Ar is selected from residues of C6-C30 fused-ring aromatic hydrocarbons, Ar1 and Ar2 are each independently selected from the group consisting of hydrogen, C6-C24 aryl, and C6-C24 heterocyclic aryl, and n is an integer selected from 2 and 3. The present organic materials can be used as electron transport layers in the organic electroluminescent apparatuses.

The invention discloses a halogenated n-type organic polymer semiconductor material as well as a preparation method and application thereof. Fluorine or chlorine atoms are introduced into brominated electron acceptor-electron donor- electron acceptor (A-D-A) type n-type small molecules, and the halogenated n-type organic polymer semiconductor material is further prepared through condensation polymerization. The introduction of halogen atoms can make the absorption spectrum to generate red shift, improve the absorption coefficient and electron mobility, and enable the material to have better photoelectric conversion efficiency. The halogenated n-type organic polymer semiconductor material can be applied to organic / polymer electronic devices such as organic / polymer photoelectric detectors and organic / polymer solar cells as an active layer.

The invention discloses a compound taking a dibenzo five-membered heterocyclic ring as a core and an application thereof, and belongs to the technical field of semiconductors. The structure of the compound provided by the invention is shown as a general formula (1) or a general formula (2), the compound provided by the invention contains a dibenzo five-membered heterocyclic parent nucleus structure, and has appropriate HOMO and LUMO energy levels, a relatively high triplet state energy level (T1) and a relatively low dipole moment. After the compound is applied to an OLED device, the luminousefficiency of the device can be effectively improved, and the service life of the device can be effectively prolonged.

The present invention discloses a triphenylphosphine oxide unit bridged bipolar host material and an application thereof. Firstly, a spiro-[fluorene-9,9'-xanthene] structure is prepared by a cyclization reaction between 2-bromo-fluorenone and phenol, by two steps of Suzuki reaction, carbazole and spiro-[fluorene-9,9'-xanthene] is introduced on a triphenylphosphine oxide structure to obtain a target product SFOPO-Cz. According to the material disclosed by the present invention, the material has the spiro-[fluorene-9,9'-xanthene] group; properties of fluorene of wide energy gap and high luminous efficiency can be fully used; meanwhile, the carbazole group having good hole transporting property is adopted as a hole transport unit; the triphenylphosphine oxide group having strong electron transporting ability is adopted as an electron transport unit; so that implementation of carrier transporting balance is facilitated. A device which is designed and prepared by the material has the advantages of high efficiency, high stability and relatively small efficiency roll-off, and has excellent potential for being a new generation of an electroluminescent phosphor host material.

The invention belongs to the technical field of organic electroluminescence materials, and discloses a compound using tripyridylbenzene as a core as well as a preparation method and application thereof. The compound can be prepared by synthesizing a halogen substituted pyridine derivative and then performing SUZUKI coupling reaction on the halogen substituted pyridine derivative and a triphenyl borate in the presence of a catalyst, or prepared by synthesizing a halogenotripyridylbenzene derivative through SUZUKI coupling reaction and then performing SUZUKI coupling reaction on the halogenotripyridylbenzene derivative and an azacyclo-substituted phenyl borate in the presence of a catalyst. The compound consists of a nitrogen heterocyclic unit containing pyridine and the like with strong electron affinity, and has lower electron injection barrier and stronger electron transmission capability, so as to reduce the driving voltage of a photoelectric device and improve the power efficiency; under the brightness of 100cd / m<2>, the driving voltage of the prepared photoelectric device is 3.03V, the power efficiency is 59.71m / W, and the external quantum efficiency is 25.7 percent.

The invention discloses a compound taking an anthrone skeleton as a core, and application thereof, and belongs to the technical field of semiconductors. The structure of the compound provided by the invention is represented by general formula (1) shown in the specification. The compound provided by the invention has relatively high triplet state energy level, relatively high glass transition temperature and relatively high molecular thermal stability; and when the material is used as a light-emitting layer or a hole blocking layer or an electron transport layer material of an OLED light-emitting device, the light-emitting efficiency of the device can be effectively improved, and the service life of the device can be effectively prolonged.

The invention relates to a novel organic electroluminescent material and an organic light emitting diode device using the electroluminescent material and belongs to the technical field of organic electron luminescence. A structural formula of the novel organic electroluminescent material is one of I, II and III, wherein Y expresses one of the following carbazoline groups, X expresses hydrogen, a substituted or unsubstituted aromatic group with carbon atom number of 6 to 30, a substituted or unsubstituted heterocyclic aromatic group with carbon atom number of 5 to 30, and a five-membered ring or six-membered ring formed by bonding the Y and the X; heteroatoms in a heterocyclic ring is N, S and O. Experiments show that the novel organic electroluminescent material disclosed by the invention is a phosphorescent compound with high triplet energy; by using the phosphorescent compound as a main body of a luminescent layer of the organic light emitting diode, energy transfer in the luminescent layer is promoted, green light emitting efficiency of an organic luminescent layer is improved, and service life of the organic luminescent layer is prolonged. (The formula is shown in the description.).

The invention relates to an electrochemical immunosensor for detecting Alzheimer's disease markers and a preparation method and application thereof. The preparation method specifically comprises the following steps of 1, pretreating a platinum carbon electrode, and depositing graphene oxide quantum dots on the platinum carbon electrode through an electric deposition manner; 2, taking a prepared gold biconical platinum coated nanostructure as a base material, and depositing the gold biconical platinum coated nanostructure on the surfaces of the graphene oxide quantum dots through an electrophoretic deposition method so as to further improve the fixing amount of an Alzheimer's disease marker capturing antibody and improve the electron transfer rate on the electrode surface; and 3, taking a prepared AuPd-PDA nanocomposite as a signal amplification tag to fix a detection antibody. Through the synergistic action of the base material and the AuPd-PDA nanocomposite, the sensitivity of the sensor is further improved; the prepared electrochemical immunosensor can be used for detecting Alzheimer's disease markers; and the electrochemical immunosensor has the characteristics of being strong in specificity, high in sensitivity and low in detection limit.

The invention relates to photocatalytic decomposition water materials and in particular relates to a dual-channel Z-configuration photocatalytic decomposition water composite material and a preparation method thereof. The preparation method disclosed by the invention comprises the following steps: with carbon nitride as a precursor material, adding sheet molybdenum disulfide to serve as a high-conductivity solid-state electron transport medium, enabling the two to perform effective assembly, and enabling nano-silver phosphate particles to uniformly grow on a composite matrix of carbon nitrideand sheet molybdenum disulfide by virtue of an ion exchange method, thereby obtaining a three-system composite material having the characteristics of being excellent visible light absorption, low in catalytic stability and high in photocatalytic efficiency. The defects that a composite catalyst prepared by a conventional method is weak in visible range response and slow in charge separation and migration and an ionic electron transport medium used in the traditional Z-configuration photocatalytic composite system easily causes side reactions and is low in material compounding uniformity are overcome.

Organic materials and organic electroluminescent apparatuses using the same are provided. The structural general formula of the materials is shown below, wherein Ar is selected from residues of C6-C30 fused-ring aromatic hydrocarbons, Ar1 and Ar2 are each independently selected from the group consisting of hydrogen, C6-C24 aryl, and C6-C24 heterocyclic aryl, and n is an integer selected from 2 and 3. The present organic materials can be used as electron transport layers in the organic electroluminescent apparatuses.

The invention belongs to the technical field of inorganic nanomaterial preparation, and discloses a zero-dimensional (0D) / two-dimensional (2D) iron phosphide nanoparticle / cadmium sulfide nanosheet composite visible light photocatalyst, and a preparation method and application thereof. 2D cadmium sulfide is mainly compounded, a situ one-step phosphating method is used for loading 0D iron phosphideparticles onto 2D cadmium sulfide nanosheets, the separation efficiency of photon-generated carriers of the 2D cadmium sulfide nanosheets is enhanced, and thus the catalytic activity is greatly improved. The prepared 0D / 2D iron phosphide / cadmium sulfide composite visible light photocatalyst is clear in structure and easy to product, good photocatalytic water splitting hydrogen production properties are achieved, and the hydrogen production efficiency is significantly improved; and the preparation method is simple, reliable and good in repeatability, and has good application prospects.

The invention discloses a flower cluster shaped calcium vanadate microsphere and a preparation method thereof. The method has the advantages of easy availability of raw materials, simple process, lowenergy consumption, less agglomeration and easy implementation, wherein ethylene glycol and water are used as double solvents, the flower cluster shaped calcium vanadate microsphere can be formed, andthe clusters in each flower cluster shaped calcium vanadate microsphere are more dense; by using double solvents, the overall reaction time is shortened; at that same time, a high-pressure reaction kettle is adopted, the temperature and pressure can be controlled, and the close reaction environment makes the size of the prepared flower cluster shaped calcium vanadate more uniform, and the qualification rate of the shape of the flower cluster shaped calcium vanadate microsphere is higher, and the prepared flower cluster shaped calcium vanadate microsphere are in the flower cluster shape, and the clusters are dense, so that the active sites in the microspheres are more and the specific surface area is larger; when the microspheres are applied to the conductive thin film materials, the ion transport rate of the microspheres is high, the electron transport ability is strong, and the conductive ability is strong because of the large number of active sites.

The invention discloses a manufacturing method of a high-stability electrode for electro-catalytic degradation of pyridine as well as a product and application of the high-stability electrode. The manufacturing method comprises the following steps: preparing a precursor solution containing antimony Sb and tin Sn; the preparation method comprises the following steps: by taking a titanium sheet as a substrate, preparing an antimony-doped tin dioxide Sb-SnO2 electrode material on the surface of the titanium sheet by utilizing a thermal decomposition method to obtain a Ti / Sb-SnO2 electrode; a constant current method is adopted, Ti / Sb-SnO2 is used as a working electrode, a Pt sheet is used as a counter electrode, a nickel nitrate Ni (NO3) 2 solution is used as an electrolyte solution, electrochemical deposition is carried out, and the nickel modified Ti / Sb-SnO2 electrode is obtained. The electrode obtained by the method takes the titanium sheet as the substrate and the Sb-SnO2, NiO or Ni (OH) 2 composite material as the electrode material, and shows relatively high pyridine electrochemical degradation activity and stability.

The invention belongs to the technical field of cotton fabric finishing, and relates to a photocatalytic self-cleaning functional cotton fabric and a preparation method thereof. The preparation method provided by the invention comprises the following steps of dissolving ammonium molybdate tetrahydrate and copper nitrate in an organic solvent, stirring until the ammonium molybdate tetrahydrate and the copper nitrate are dissolved, then adding 1, 2, 4-triazole, carrying out ultrasonic treatment to dissolve the 1, 2, 4-triazole, and adjusting the pH value to 2.5-8.5 to obtain a treatment solution; soaking a washed cotton fabric into a sodium chloroacetate solution, reacting for 5-20 minutes at room temperature, taking out, washing and drying to obtain a cotton fabric subjected to etherification modification treatment; and putting the cotton fabric subjected to etherification modification treatment into the treatment solution, conducting ultrasonic treatment for 3-8 h, conducting stirring for 12-24 h at the room temperature, then taking out the cotton fabric, washing and drying, and obtaining the photocatalytic self-cleaning functional cotton fabric. The photocatalytic self-cleaning functional cotton fabric prepared by the preparation method disclosed by the invention is stronger in light absorption capacity, more in photocatalytic reaction sites and more excellent in photocatalytic self-cleaning performance.

A novel compound having excellent heat resistance, electron transport ability and luminescence is disclosed. An organic EL device which includes the novel compound in one or more organic layers, has improved characteristics, such as luminous efficiency, driving voltage, and lifespan.

The invention discloses a manufacturing method of an electrode for electrocatalytic degradation of nitrobenzene and a product and application thereof. The manufacturing method comprises the following steps: preparing a precursor solution containing antimony Sb and tin Sn; soaking the graphite felt in a precursor solution containing antimony and tin; paving the graphite felt adsorbed with the antimony and tin-containing precursor solution on a titanium sheet substrate, and preparing the carbon-modified antimony-doped tin dioxide Sb-SnO2 electrode material on the surface of the titanium sheet by using a thermal decomposition method. The electrode obtained through the method shows high nitrobenzene electrochemical degradation activity; on the one hand, the charge transfer capacity of the surface of Sb-SnO2 is effectively improved due to the fact that the carbon-based material has high electron transmission capacity; on the other hand, the surface structure of Sb-SnO2 is optimized and reaction active sites are increased due to the fact that the carbon material serves as a reaction substrate.

The invention discloses a stacked organic light emitting device and a preparation method thereof. The stacked organic light emitting device comprises a charge generating layer, and the charge generating layer includes a metal oxide layer, a metal layer and a hole doped layer which are sequentially stacked. The metal oxide layer is made of a metal oxide of which the refractive index is 1.9-2.2. The hole doped layer is made of a mixed material formed by doping ferric chloride into a benzidine organic hole transport material according to the weight ratio of 1-10:100. As the metal oxide layer, the metal layer and the hole doped layer which are sequentially stacked are used as the charge generating layer, the stacked organic light emitting device has high light transmittance, strong electron transport capability, high conductivity and strong hole injection and transport capability, and the light emitting efficiency of the stacked organic light emitting device is effectively improved.

The invention discloses a compound taking a dibenzo five-membered heterocycle as a core and an application of the compound, and belongs to the technical field of semiconductors. The structure of the compound provided by the invention is as shown in a general formula (1). The compound provided by the invention contains a dibenzo five-membered heterocyclic parent nucleus structure, and has appropriate HOMO and LUMO energy levels and relatively high Eg and triplet state energy level (T1). The compound provided by the invention also has relatively high glass transition temperature and molecular thermal stability; when the compound is used as a light-emitting layer or hole blocking or electron transport layer material of an OLED light-emitting device, the three-dimensional property of the structure can be effectively improved by matching with the branched chains in the range of the material; the whole molecular steric hindrance is large, rotation is not easy, and the chemical stability of the material is improved. Therefore, after the compound is applied to an OLED device, the luminous efficiency of the device can be effectively improved, and the service life of the device can be effectively prolonged.

The present invention relates to an electrochemical immunosensor for detecting Alzheimer's disease markers, its preparation method and application, specifically comprising the following steps: ① pretreatment of platinum carbon electrodes, and graphene oxide quantum The dots are deposited on the platinum carbon electrode; ②The prepared gold bicone-coated platinum nanostructure is used as the substrate material, and it is deposited on the surface of the graphene oxide quantum dots by electrophoretic deposition, so as to further improve the Alzheimer's disease marker capture antibody and accelerate the electron transfer rate on the electrode surface; ③The prepared AuPd‑PDA nanocomposite material is used as a signal amplification label to immobilize the detection antibody; through the synergistic effect of the substrate material and the AuPd‑PDA composite nanomaterial, the sensor’s sensitivity is further improved Sensitivity; the prepared electrochemical immunosensor can be used for the detection of Alzheimer's disease markers; it has the characteristics of strong specificity, high sensitivity and low detection limit.

The invention discloses a cathode modification layer material and a preparation method thereof, and a solar cell and a preparation method thereof. The preparation method of the cathode modification layer material includes the following steps: adding a substance containing amino groups into 4,6-diaminoresorcinol hydrochloride solution; and when the color of the solution becomes purple, stopping adding the substance, stirring the substance for 2-5h and carrying out pumping filtration for 10-12h. The cathode modification layer material prepared in the invention has a conjugate structure and excellent electron transport capability, and can reduce the work function for high-work-function metal or ITO and provide ohmic contact.