122results about How to "Improve electron transport efficiency" patented technology

The invention belongs to the technical field of electrocatalysis and particularly relates to an iron-doped bimetal phosphide electrocatalyst and a preparation method and application thereof. A hydroxide precursor synthesized by a hydrothermal reaction undergoes a phosphating reaction at a low temperature to produce a Ni1CoxFeyP nanosheet array electrocatalyst. The bimetal phosphide has low chargetransfer resistance and a reaction barrier for a hydrogen evolution reaction and has superior performances in the electrocatalytic hydrogen evolution reaction. The catalyst has a low cost. The preparation method is easy to operate and has simple processes. The electrocatalyst has excellent catalytic performances and provides the basic application research for the material in the field of electrocatalysis.

An image sensor and manufacturing method thereof are provided. The image sensor can include a gate on a semiconductor substrate, first and second p-type doping areas below the gate, a third p-type doping area adjacent to the first p-type doping area, and a fourth p-type doping area adjacent to the third p-type doping area. An n-type doping area can be provided in the semiconductor substrate such that at least a portion of the n-type doping area is disposed below the first, third, and fourth p-type doping areas. A floating diffusion area can be provided adjacent to the second p-type doping area.

The present invention relates to oleate hydroxylase genes, proteins, and methods of their use. The present invention also relates to methods of using the oleate hydroxylase genes and proteins, including in their expression in transgenic organisms and in the production of hydroxylated fatty acids.

The invention provides a fluorene derivative and an electronic device. By introducing a fluorene rigid structure into the fluorene derivative, the obtained fluorene derivative has an excellent film-forming property and high thermal stability, and can be used for preparing an organic light-emitting device, an organic field effect transistor and an organic solar cell. In addition, the fluorene derivative can be used as a constituent material of a hole injection layer, a hole transport layer, a light emitting layer, an electron blocking layer, a hole blocking layer or an electron transport layer,and can reduce the driving voltage, improve the efficiency and the brightness, prolong the service life and the like. In addition, the preparation method of the fluorene derivative is simple, raw materials are easily available, and the industrial development requirements can be met.

The invention discloses a photovoltaic material with a thin-layer perovskite structure and a preparation method for the photovoltaic material, belongs to the field of the photovoltaic material, and particularly belongs to the field of the photovoltaic material with the perovskite structure. An inducer is added in a synthetic process of a crystal with a perovskite structure at a proper temperature and pH value to enable the original crystal with a cubic crystal system perovskite structure to distort so as to obtain a crystal with a thin-layer stacked perovskite structure. The preparation method provided by the invention is simple in process and easy to operate; the obtained crystal with the thin-layer stacked perovskite structure is high in electron transmission efficiency; and when the photovoltaic material with the thin-layer perovskite structure is applied to a solar cell, the solar cell is high in photoelectric conversion rate; and in addition, the photovoltaic material is low in electron loss and high in transmission efficiency.

Provided are a novel compound for an organic electronic material and an organic electroluminescent device using the same. The compound for an organic electronic material according to the present invention has high electron transport efficiency, thereby preventing crystallization at the time manufacturing of a device, and allows a layer to be easily formed, thereby improving current characteristics of the device, and thus an OLED device having a lowered driving voltage and improved power efficiency as well as superior luminous efficiency and lifespan characteristics as compared with the existing material can be manufactured.

The invention relates to a fluorene derivative and an electronic device. By introducing a fluorene rigid structure, the obtained fluorene derivative has excellent film forming property and thermal stability, and can be used for preparing organic electroluminescent devices, organic field effect transistors and organic solar cells; in addition, the fluorene derivative can be used as a constituent material of a hole injection layer, a hole transport layer, a luminescent layer, an electron blocking layer, a hole blocking layer or an electron transport layer, a driving voltage can be reduced, efficiency and brightness can be improved, and the service life is prolonged; and in addition, the preparation method of the fluorene derivative is simple, raw materials are easily available, and industrial development requirements can be met.

The invention provides a fluorene derivative and an electronic device. A fluorene rigid structure is introduced into the fluorene derivative, so that the obtained fluorene derivative is excellent in film-forming property and thermal stability, and can be used for preparing an organic light-emitting device, an organic field effect transistor and an organic solar cell. In addition, the fluorene derivative can be used as a constituent material of a hole injection layer, a hole transport layer, a light emitting layer, an electron blocking layer, a hole blocking layer or an electron transport layer, and can reduce the driving voltage, improve the efficiency and brightness, prolong the service life and the like. In addition, the preparation method of the fluorene derivative is simple, raw materials are easy to obtain, and the industrial development requirement can be met.

The invention belongs to the technical field of organic luminous material, concretely relating to a diphenyl ether azole ramification electronic transmission material and its new preparing method and application. It uses diphenyl ester as the center in structure, containing nitrogen, sulfur and oxygen heteroaromatic cycles; and it is made by acylation and condensation reactions of aromatic amine; and it has very good thermal stability and film forming property, widely used as electronic transmission material for organic light emitting devices and doping material.

The invention relates to a FeSe2 nanocomposite material and a synthetic method and application thereof. The composite material is characterized in that FeSe2 nano particles are loaded on the surface of a conducting substrate. Dimethylformamide (DMF), absolute ethyl alcohol and the like are adopted as a solvent, urea serves as a reducing agent, iron vitriol and the like serve as an iron source of a product, selenium powder serves as a selenium source of the product, and a FeSe2 material in nanoscale is controlled and synthesized at the high pressure. Compared with an existing method, the beneficial effects of being simple and quick in preparing process, soft in synthesis condition and environment-friendly are achieved, and the synthesized nanocomposite material has the electrocatalytic activity and is suitable for the electrochemistry field.

An organic light emitting device having a pyrene based electron transport compound and an electron injecting and transport layer comprising the electron transport compound is provided.

The invention provides a fluorene derivative and an electronic device. By introducing a fluorene rigid structure into the fluorene derivative, the obtained fluorene derivative has an excellent film-forming property and high thermal stability, and can be used for preparing an organic light-emitting device, an organic field effect transistor and an organic solar cell. In addition, the fluorene derivative can be used as a constituent material of a hole injection layer, a hole transport layer, a light emitting layer, an electron blocking layer, a hole blocking layer or an electron transport layer,and can reduce the driving voltage, improve the efficiency and brightness, prolong the service life and the like. In addition, the preparation method of the fluorene derivative is simple, raw materials are easily available, and the industrial development requirements can be met.

The invention belongs to the technical field of electrocatalysis, and discloses a cobalt zinc bimetallic sulfide based composite electrocatalyst, and a preparation method and applications thereof, andmore specifically relates to a cobalt zinc bimetallic sulfide/nickel iron layered bimetallic hydroxide/foam nickel composite electrocatalyst, and a preparation method and applications thereof. The cobalt zinc bimetallic sulfide/nickel iron layered bimetallic hydroxide/foam nickel composite electrocatalyst is prepared through three-step hydro-thermal method, is low in charge transfer resistance and hydrogen evolution reaction barrier, possesses excellent performance in electrocatalysis hydrogen evolution reaction, is low in cost, simple in operation and technology, and excellent in catalytic performance, and base application research on the material kind in electrocatalysis field is realized.

The present invention relates to a novel organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present invention has high electron transport efficiency, which can prevent crystallization during the formation of the device; is effective in forming a layer(s) to improve the current property of the device, and thus reduces the driving voltage of the device; and has the advantages of providing an OLED device having advanced power efficiency. While organic electroluminescent devices comprising conventional organic electroluminescent compounds need hole blocking layers, the organic electroluminescent device comprising the organic electroluminescent compound of the present invention does not have to comprise a hole blocking layer, and thus can decrease the voltage needs of the device.

A photoelectric element provided with an electron transport layer having excellent electron transport property and sufficiently wide reaction interface, and that has excellent conversion efficiency.

The photoelectric element has an electron transport layer 3 and a hole transport layer 4 sandwiched between a pair of electrodes 2 and 5. The electron transport layer 3 is formed of an organic compound having a redox moiety capable of being oxidized and reduced repeatedly. The organic compound contains an electrolyte solution which stabilizes the reduced state of the redox moiety, and forms a gel layer 6 containing a sensitizing dye. Thus, the organic compound and the electrolyte solution in the electron transport layer 3 constitute the gel layer 6, while at the same time, the sensitizing dye is present within the gel layer 6, whereby the reaction interface of the organic compound is enlarged, improving the conversion efficiency and the electron hand-over efficiency from the sensitizing dye to the organic compound in the electron transport layer 3, as a result of which the electron transport efficiency is improved.

The invention belongs to the technical field of a preparation and application of a primordial water hyacinth biomass carbon material with a porous structure, and specifically discloses a preparation method of a novel electrode material and an application of the electrode material as a cathode in an electro-Fenton system to degrade endocrine disruptors. The electrode material takes water hyacinth biomass powder as a precursor, zinc chloride powder is added in different proportions to perform activating, the novel biomass carbon material is prepared by high temperature calcination under the protection of an inert gas, and finally a porous electrode is obtained as the cathode material for E-Fenton to degrade endocrine disruptors. The material has relatively good electrical conductivity and relatively large specific surface area. The material can be used as a novel electrode material, and a good degradation effect is especially shown in the electro-Fenton experiment.

The invention provides a novel organic light-emitting material. The novel organic light-emitting material is used for a light-emitting main body material and an electron transport layer material of anorganic light-emitting device. The invention also provides an organic light-emitting device comprising the novel organic light-emitting material.

The invention discloses a non-noble metal photocatalysis cocatalyst. The non-noble metal photocatalysis cocatalyst is prepared from cobalt nanometer particles and nitrogen-doped graphene according to a mass ratio of 100-150: 1 through compounding. The invention provides a preparation method of the non-noble metal photocatalysis cocatalyst. The preparation method comprises preparing graphene oxide through Hummers, preparing a graphene oxide aqueous suspension through ultrasonic treatment, adding a CoCl2 aqueous solution into the suspension, carrying out freeze drying to obtain brown powder, putting the brown powder into a tubular furnace in atmospheres of argon and ammonia gas and carrying out calcination to obtain black powder. Cobalt nanometer particles are dispersed and doped in graphene oxide. The inventor successfully develops the cobalt nanometer particle/nitrogen-doped graphene composite cocatalyst with high water photolysis hydrogen production activity. The cocatalyst improves graphene electron transmission efficiency and improves a catalytic reaction active site. The cobalt and nitrogen valence bond produces synergism so that catalyst photocatalytic activity and stability are obviously improved.

The invention discloses a perovskite solar cell and a preparation method and polymer/fullerene derivative charge transport layer thereof. The perovskite solar cell comprises a glass substrate, a charge transport layer, a perovskite absorption layer, the polymer/fullerene derivative charge transport layer, a buffer layer and a metal electrode from bottom to top in sequence, wherein the polymer/fullerene derivative charge transport layer is of a heterojunction structure formed by a polymer and a fullerene derivative; and phase separation between a donor and an acceptor can be formed by doping, when the concentration ratio is appropriate, a good electron transport channel can be formed, the coverage effect is good, charge transport layer defects and carrier recombination are reduced, thus leakage currents are reduced, and electron transport is promoted. Through comparison, it is found that the dielectric constant of the charge transport layer of the perovskite solar cell of the structureis significantly increased by about 24% compared with pure fullerene derivatives, and other properties are not reduced; and the highest photoelectric conversion efficiency of the prepared perovskite solar cell can reach 20.60%.

The invention relates to a polycyclic organoboron derivative and an electronic device. According to the polycyclic organoboron derivative disclosed by the invention, a cyclic rigid structure is introduced, so that the obtained organoboron derivative is excellent in film-forming property and thermal stability, and can be used for preparing an organic light-emitting device, an organic field effect transistor and an organic solar cell. In addition, the polycyclic organoboron derivative can be used as a constituent material of a hole injection layer, a hole transport layer, a light emitting layer,an electron blocking layer, a hole blocking layer or an electron transport layer, and can reduce the driving voltage, improve the efficiency, improve the brightness, prolong the service life and thelike. In addition, the preparation method of the polycyclic organic boron derivative is simple, raw materials are easy to obtain, and the industrial development requirement can be met.

The invention discloses an inverted top emission organic electroluminescence device and a preparation method thereof. The inverted top emission organic electroluminescence device comprises a substrate layer, a cathode layer, an organic functional layer and an anode layer which are laminated and combined in turn. The organic functional layer comprises an electron transmission layer and a light-emitting layer which emits light under driving of an external power supply. The electron transmission layer is arranged between the cathode layer and the light-emitting layer in a laminating and combining way. The electron transmission layer has a structure of a doped layer which is formed by multiple doping agent layers and electron transmission matrix material layers in an alternating and laminating way after permeating and doping processing. The preparation method of the inverted top emission organic electroluminescence device comprises steps that: a substrate is acquired, the cathode layer is prepared, the organic functional layer is prepared, the anode layer is prepared, etc. The inverted top emission organic electroluminescence device is high in light emission efficiency, low in starting voltage and long in the service life. The preparation method of the inverted top emission organic electroluminescence device is simple in technology, conditions are easy to control and product qualified rate is high so that production efficiency is effectively enhanced and the inverted top emission organic electroluminescence device is suitable for industrialized production.

The invention provides a 2, 4, 7-trisubstituted fluorene compound and an electronic device thereof. According to the 2, 4, 7-trisubstituted fluorene compound disclosed by the invention, a fluorene rigid structure is introduced, so that the 2, 4, 7-trisubstituted fluorene compound is excellent in film-forming property and thermal stability, and can be used for preparing an organic light-emitting device, an organic field effect transistor and an organic solar cell. In addition, the 2, 4, 7-trisubstituted fluorene compound can be used as a constituent material of a hole injection layer, a hole transport layer, a light emitting layer, an electron blocking layer, a hole blocking layer or an electron transport layer, and can reduce driving voltage, improve efficiency and brightness, prolong theservice life and the like. The preparation method of the 2, 4, 7-trisubstituted fluorene compound is simple, raw materials are easy to obtain, and industrial development requirements can be met.

The invention relates to a spirobenzanthrone derivative and an electronic device. According to the spirobenzanthrone derivative disclosed by the invention, a spirobenzanthrone rigid structure is introduced, so that the obtained spirobenzanthrone derivative is excellent in film-forming property and thermal stability, can be used for preparing an organic electroluminescent device, an organic field effect transistor and an organic solar cell, can be used as a constituent material of a hole injection layer, a hole transport layer, a light emitting layer, an electron blocking layer, a hole blockinglayer or an electron transport layer, and can reduce the driving voltage, improve the efficiency, improve the brightness, prolong the service life and the like. The preparation method of the spirobenzanthrone derivative has characteristics of simpleness and easily available raw materials, and can meet industrial development requirements.

The invention relates to a heteroatom-containing spiro organic electroluminescent compound as well as a preparation method and the application thereof. The structural formulas of the heteroatom-containing spiro organic electroluminescent compound are shown as a chemical formula 1 and a chemical formula 2, wherein m, n and p in the chemical formula 1 are 0 or 1; x independently represents a connecting bond, -O-, -S-, -SO2-, -C(R3)(R4)-, -N(R5)-, -Si(R6)(R7)-, -Sn(R8)(R9)-, and -Ge(R10) (R11); L1, L2 and L3 are link bonds, C6C30 arylene groups and ternary 15-membered heteroarylene groups; wherein R1 and R2 are the same or different from each other and are respectively and independently hydrogen, deuterium, halogen, cyano, carboxyl, nitro, hydroxyl, amino, silicon base and borane; Ar1-Ar4 each independently represents a C3-C30 cycloalkyl group and a ternary 20-membered heterocycloalkyl group, and an electron injection layer and/or an electron transport layer of an organic light-emitting device prepared from the compound can significantly improve the electron transport efficiency from the electron transport layer to a light-emitting layer, thereby improving the light-emitting efficiency.