2835 results about "Electron transmission" patented technology

An organic electroluminescence display unit includes: a lower electrode for each device; a first hole injection/transport layer provided on the lower electrode for each device; a second organic light emitting layer of the first color provided on the first hole injection/transport layer for the second organic electroluminescence device; a second hole injection/transport layer provided on the entire surfaces of the second organic light emitting layer and the first hole injection/transport layer for the first organic electroluminescence device, and being made of a low molecular material; a blue first organic light emitting layer provided on the entire surface of the second hole injection/transport layer; and an electron injection/transport layer having at least one of electron injection characteristics and electron transport characteristics, and an upper electrode that are provided in sequence on the entire surface of first organic light emitting layer.

The magnetic tape includes a magnetic layer containing ferromagnetic hexagonal ferrite powder, abrasive, and binder on a nonmagnetic support, wherein the ferromagnetic hexagonal ferrite powder exhibits an activation volume of less than or equal to 1,800 nm³, and inclination, cos θ, of the ferromagnetic hexagonal ferrite powder relative to a surface of the magnetic layer as determined by sectional observation by a scanning electron transmission microscope is greater than or equal to 0.85 but less than or equal to 1.00.

A thermoelectric structure and device including at least first and second material systems having different lattice constants and interposed in contact with each other, and a physical interface at which the at least first and second material systems are joined with a lattice mismatch and at which structural integrity of the first and second material systems is substantially maintained. The at least first and second material systems have a charge carrier transport direction normal to the physical interface and preferably periodically arranged in a superlattice structure.

The invention discloses a luminescent material of a series of fluorene derivatives. A structure of the material is as shown in formula I. The material as shown in formula I is easily dissolved in an organic solvent, is good in heat stability and can be used to prepare a luminescent device in a way of fluid manufacturing procedures such as printing, instilling, coating and printing. An organic electroluminescent device prepared by coating the material has the characteristics that the power efficiency is good, the material utilization rate is high, the manufacturing cost of an OLED device is greatly decreased, and the material synthesis and purification method is simply suitable for mass production, so that the luminescent material is an ideal choice of the organic electroluminescent device luminescent material. Utilizing the organic electroluminescent diode material as a main body material or a doping material in a luminescent layer or independently as a luminescent material or a hole transmission material or an electron transmission material also falls within a protection scope (see the specification).

The invention discloses and proposes a high-efficiency quantum dot light emitting diode with a self-assembly polymer hole transmission layer structure. Except a positive electrode and a negative electrode, the high-efficiency quantum dot light emitting diode comprises a three-layer structure: a hole transmission layer, a quantum dot light emitting layer and an electron transmission layer, wherein one end of the quantum dot light emitting layer is connected with the hole transmission layer, the other end of the quantum dot light emitting layer is connected with the electron transmission layer, the electron transmission layer is organic nanoparticles after doped, the hole transmission layer is formed by doping a monomer, a polymer, small-molecule, inorganic oxidized metal nanoparticles or a two-dimensional nanometer material into poly(3,4- ethylenedioxythiophene monomer), a quantum dot is quantum dots of zinc sulfide, zinc selenide, cadmium sulfide, cadmium selenide, cadmium telluride, mercury sulfide, mercury selenide, mercury telluride or core-shell nanometer structured cadmium selenide-zinc sulfide, cadmium sulfide-zinc sulfide, cadmium sulfide-zinc selenide and graphene thereof and the like, and the negative electrode is glass or polyethylene terephthalate (PET) with a layer of indium tin oxide (ITO) or fluorine-doped tin oxide (FTO) or graphene.

The invention belongs to the field of electroluminescent devices and particularly relates to a novel quantum dot luminescent device. The novel quantum dot luminescent device comprises an ITO anode, a hole injection layer, a hole transmission layer, a quantum dot luminescent layer, an electron transmission layer, an Al cathode and an insulating layer, wherein the insulating layer is arranged between the hole transmission layer and the quantum dot luminescent layer. The material of the insulating layer can be one or more of polymethyl methacrylate, calcium oxide, aluminum oxide, silicon oxide or gallium oxide and the like. Through the arrangement of the insulating layer, on one hand, injection of holes and electrons is effectively balanced; and on the other hand, the electric neutrality of quantum dots is ensured, so that the luminescence property of a blue-green quantum dot light-emitting diode is improved.

The invention discloses a method for preparing an active electrode material of a lithium ion battery. The method comprises the following steps of: preparing a nano-crystal with electrochemical activity into an aqueous solution, and adding a carbon source and a surface active agent into the aqueous solution to form a uniform and stable mixture solution; and preparing the mixture solution into spherical particles under the condition that the temperature is between 200 and 900 DEG C through a spray granulation method, and performing heat treatment on the spherical particles in 400-900 DEG nitrogen gas so as to form the active electrode material of the lithium ion battery. Conductive networks are distributed in the active electrode material, and the active electrode material has a porous structure, so that the active electrode material has good lithium ion and electron transmission channels; and the lithium ion battery prepared from the active electrode material has high specific capacity, high-current charging and discharging and high cyclical stability. The method for preparing the electrode material of the lithium ion battery through a spraying method can be easily applied to mass production, and is generally used for preparing various high-performance electrode materials of the lithium ion battery.

The invention relates to a perovskite thin-film photovoltaic cell and a manufacturing method of the perovskite thin-film photovoltaic cell. The perovskite thin-film photovoltaic cell is composed of a conducting transparent substrate, a perovskite light-absorbing layer, a hole transfer layer and a metal electrode. The perovskite thin-film photovoltaic cell has the advantages that the structure is quite simple, a traditional electron transfer layer which needs high-temperature sintering is omitted due to the fact that a perovskite material serves as the light-absorbing layer and achieves the electron transfer function, and a porous layer is not needed either; the perovskite material is high in light-absorbing performance, the whole cell is manufactured at a low temperature, the complicated processes such as high-temperature sintering are not needed, and therefore the manufacturing cost of the cell is effectively reduced; the great promotion function is achieved on the flexibility of the cell and the large-sized reel-to-reel printing manufacturing of the cell; the whole manufacturing technology of the cell is simple, the popularization of the technology is facilitated, high photoelectric converting efficiency (approximate to 14 percent) and good device stability are obtained particularly, and therefore the industrial application prospect is achieved.

The invention provides a QLED device and a preparation method thereof. The preparation method of the QLED device comprises the following steps: providing a substrate, and forming a bottom electrode on the substrate; depositing an electron transmission material on the bottom electrode, and carrying out the RTP treatment on the electron transmission material to obtain an electron transmission layer; depositing an interface decorative material on the electron transmission layer to form an interface decorative layer, wherein the interface decorative material is a material with a permanent dipole moment; and successively depositing a quantum dot luminescent layer and a top electrode on the interface decorative layer.

The invention provides an application of crosslinkable conjugated polymer materials in a flip organic photoelectric device. The conjugated polymer materials possess a conjugated main chain and functionalized side chain groups, wherein the functionalized side chain groups comprise a crosslinkable substituent group and a strong polar group possessing water alcohol solubility. Under the condition ofillumination or heating, the conjugated polymer materials can be processed to be insoluble and nonfusible interpenetrating polymer networks through using a strong polar solvent. When constructing a multilayer device, an interface miscibility phenomenon between layers can be overcome. The interpenetrating polymer networks can be regarded as materials of an electron injecting layer or an electron transmission layer to prepare a flip organic electroluminescent device or a flip organic solar cell device. The electron can be directly injected or extracted from a high work function transparency electrode. By using the crosslinkable conjugated polymer materials, processes of the flip organic electroluminescent device and the flip organic solar cell device can be simplified, and an object of preparing the efficient organic photoelectric device by using a low cost technology can be realized.

An organic electroluminescence element including at least one organic layer including a light emitting layer, between an anode and a cathode, wherein at least one layer of the at least one organic layer contains at least one selected from specific nitrogen-containing heterocyclic derivatives, and at least one layer of the at least one organic layer contains a specific electron-transporting phosphorous light emitting material.

The invention belongs to the field of a solar cell, and discloses a perovskite solar cell. The perovskite solar cell sequentially comprises a transparent conductive substrate, an electron transmission layer, an interface modification layer, a modified perovskite active layer, a hole transmission layer and a positive electrode, wherein the electron transmission layer is a nanometer TiO2 particle layer, and the interface modification layer is a fullerene derivative layer. A sol-gel method is employed, high-crystallization TiO2 nanoparticles are synthesized by taking titanium tetrachloride is used as a precursor, the TiO2 nanoparticles are applied to the perovskite solar cell by employing a low-temperature annealing process, a fullerene derivative is directly spin-coated on a surface of the obtained nanometer TiO2 particle layer for modification, the defects in TiO2 and perovskite are passivated, a novel perovskite synthesis path is employed, the obtained perovskite solar cell has high efficiency and does not have hysteresis effect under a low-temperature preparation process, and the device can be used for stable transmission; and moreover, the related preparation method is simple, is low in energy consumption and is suitable for promotion and application.

The invention discloses a quantum dot light-emitting diode with a mixed HTL and a preparation method of the quantum dot light-emitting diode. The quantum dot light-emitting diode sequentially comprises an anode, a hole injection layer, a mixed hole transmission layer, a quantum dot light-emitting layer, an electron transmission layer, an electron injection layer and a cathode, wherein a material of the mixed hole transmission layer is obtained by blending and dissolving two or more hole transmission layer materials with different functions into a solvent. According to the preparation method, the two or more hole transmission layer materials with different functions are mixed to prepare a layer of mixed HTL, so that maximum utilization of the hole transmission layers under the premises of simplifying the preparation technology and saving the production cost is facilitated. In addition, the problem of low transmission/injection efficiency on the holes to the quantum dot light-emitting layer in a conventional QLED can be effectively solved; the lifetime and the stability of a device are strengthened; and the overall light-emitting property and the display property of the device are improved.

The invention discloses an organic photoelectric device, which comprises a substrate, an anode layer, a cathode layer, and an organic functional layer arranged between the anode layer and the cathode layer. The organic functional layer comprises one or more of a hole injection layer, a hole transmission layer, a luminous layer, an electron transmission layer, an electron injection layer, an anode buffer layer, an electron donor layer, an interface layer, an electron acceptor layer and an cathode buffer layer; the hole transmission layer and the electron donor layer are doped with magnetic multi-wall carbon nanotubes, or the electron transmission layer and the electro acceptor layer are doped with magnetic single-wall carbon nanotubes, or the hole transmission layer and the electron donor layer are doped with magnetic multi-wall carbon nanotubes and the electron transmission layer and the electron acceptor layer are doped with the magnetic single-wall carbon nanotubes simultaneously; and the length direction of the magnetic multi-wall carbon nanotubes and the magnetic single-wall carbon nanotubes is vertical to the surface of the anode layer. The device reduces the resistance of a carrier transmission layer, improves the carrier transmission capacity and the visible light transmissivity of the carrier transmission layer, and improves the photoelectric performance of the device.

The electron tunneling device includes first and second non-insulating layers spaced apart such that a given voltage can be provided therebetween. The device also includes an arrangement disposed between the non-insulating layers and configured to serve as a transport of electrons between the non-insulating layers. This arrangement includes a first layer of an amorphous material such that using only the first layer of amorphous material in the arrangement would result in a given value of a parameter in the transport of electrons, with respect to the given voltage. The arrangement further includes a second layer of material, which is configured to cooperate with the first layer of amorphous material such that the transport of electrons includes, at least in part, transport by tunneling, and such that the parameter, with respect to the given voltage, is increased above the given value of the parameter.

The invention discloses a quantum dot electroluminescent device and a preparation method thereof. The device comprises a first electrode layer, a second electrode layer as well as a hole injection layer, a hole transmission layer, an electron barrier layer, a quantum dot luminescent layer, a hole barrier layer and an electron transmission layer, wherein the hole injection layer, the hole transmission layer, the electron barrier layer, the quantum dot luminescent layer, the hole barrier layer and the electron transmission layer are sandwiched between the two electrode layers. The preparation method is characterized in that the electron barrier layer covers the hole transmission layer by utilizing a rotary coating method; the material of the electron barrier layer is preferably DNA-CTMA (deoxyribonucleic acid-cetyltrimethyl ammonium), thus the effective hole injection and efficient electron barrier are realized, and the device performances and luminescent color purity are improved greatly.

The invention discloses a strong correlation electron system-based organic solar cell and a preparation method thereof. The organic solar energy cell comprises a positive pole, a hole buffer layer, a photoactive layer and a negative pole, and is characterized in that: the organic solar energy cell also comprises an electron buffer layer which is arranged between the photoactive layer and the negative pole and is made of a material which is strong correlation electron system compound; and by using the property that the strong correlation electron system compound performs insulating state to metal state conversion when injected with charges, the organic solar energy cell improves the electron transmission capacity at the position of the interface between an organic layer and an inorganic electrode, thereby improving the short circuit current Isc and power conversion efficiency PCE of a device, preventing the damages caused by a deposited metal cathode to the organic layer, reducing the drawbacks of the device, suppressing the degradation of the device; and compared with the common LiF electronic buffer layer, the electronic buffer layer of the invention has the advantages of simple and convenient manufacturing process, easy control and excellent device performance.

The invention discloses a QLED, a manufacturing method therefor and an illuminating device. The QLED orderly comprises a substrate, a bottom electrode, a hole injection layer, a hole transmission layer, a first insulation layer, a quantum dot illumination layer, a second insulation layer, an electron transmission layer and a top electrode. According to the QLED, one insulation layer is added between the electron transmission layer/hole transmission layer and the quantum dot illumination layer, injection of electrons and holes into the quantum dot illumination layer can be controlled via the insulation layer, and therefore current carrier balance can be controlled and optimized; one insulation layer is added on each of two sides of the quantum dot illumination layer, the electrons and holes can effectively be limited in the quantum dot illumination layer, recombination probability can be increased, and overall efficiency of an apparatus can be improved.

The invention relates to a flexible polymer solar battery of an anode layer of a metal grid, which comprises a flexible substrate, an anode layer, a hole transport layer, an active layer, an electron transfer layer and an Al electrode cathode and is characterized in that the anode layer is made from one or more of composition metal wire grid materials of Ag, Cu, and Ni. In the solar battery, a silver, copper and nickel (Ag: Cu: Ni) metal grid/LiF combined electrode is used as the anode; compared with the battery prepared by a common flexible substrate ITO electrode, the flexible solar battery prepared by taking P3HT/PCB as the active layer can show up better performance; after a layer of lithium fluoride (LiF) layer with the thickness of 2nm is added between the Ag: Cu: Ni metal grid and the polythiophene derivative doped polystyrolsulfon acid (PEDOT: PSS) layer, the film formation of PEDOT: PSS on the surface of the anode is improved, the balance between the hole and the electron transport is enhanced, and compared with the battery with the common flexible substrate ITO electrodes, the energy conversion efficiency is obviously improved.

An organic EL device which has a light emission layer between a pair of electrodes. The light emission layer is formed of a phosphorescent dopant and a host including (i) a carbazole compound and (ii) one or more selected from an oxadiazole compound, a phenanthroline compound, a triazine compound, and a triazole compound. Since the host has both hole transport property and electron transport property, the organic EL device has enhanced emission efficiency and lifetime characteristics even in the absence of a hole-blocking layer.

A hybrid solar cell with an aluminum-doped zinc oxide nanorod as the electron transfer layer is composed of a transparent conducting glass substrate, the aluminum-doped zinc oxide nanorod electron transfer layer, a layered perovskite-like hybrid material CH3NH3PbX3(wherein X is Cl, or Br or I),2,2',7,7'-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene hole transfer layer and an Au metal back electrode layer, wherein all the parts form a laminated structure in sequence. The hybrid solar cell with the aluminum-doped zinc oxide nanorod as the electron transfer layer has the advantages that due to the fact that the aluminum-doped zinc oxide nanorod is used as the electron transfer layer in the hybrid solar cell, the specific surface area is large, electron-transport capacity is high, electron-hole combination is effectively restrained, and photoelectric conversion efficiency is high; the manufacturing method and technique are simple, reaction temperature is low, efficiency is high, raw materials are rich, cost is low, and environmental friendliness is achieved. The hybrid solar cell with the aluminum-doped zinc oxide nanorod as the electron transfer layer is suitable for industrialized large-scale production.

The invention relates to a phenothiazine dye used in dye-sensitized solar cells and pertains to photoelectric transformation material application field. The structure of the dye is that the phenothiazine and derivatives thereof are taken as EDS and contains different amount of aromatic cyclic structure unit or multiple olefin structure adjustable with absorption spectrum and fluorescence emission spectrum and as bridged chain to connect the organic dye with different electron absorbing groups. Since the phenothiazine as chromophore group has good electron supply capacity, the aromatic cyclic structure unit or the olefin structure can function to broaden absorption range of visible light of the dye and electron transmission capacity and by connecting with the electron absorbing group of different types, the dye has good light, thermal and chemical stability and photoelectric transformation property. The dye is applicable in dye-sensitized nanometer solar cells as organic photosensitive dye.