263 results about "Emission efficiency" patented technology

The present invention relates to a novel organic compound and an organic electroluminescent device using same and, more specifically, to an organic compound that exhibits excellent electron transport ability, heat resistance, carrier transport capability, and luminescence, and an organic electroluminescent device in which the organic compound is included in one or more organic layers, thereby improving properties such as emission efficiency, driving voltage, and lifespan.

Solid-state lighting devices including light-emitting diode (LED) chips and more particularly LED chip structures with electrode extensions and gradient via arrangements are disclosed. Electrode extensions and vias are formed on opposing sides of an active LED structure as part of anode and cathode connections. Gradient via arrangements include variable diameter and / or variable via pitch relative to electrode extensions and electrode pads. Additional structures include variable width electrode extensions relative to vias and / or electrode pads. Layouts of gradient vias and corresponding electrode extensions are disclosed for increasing uniformity in recombination efficiency across LED chip areas and for providing improvements to current injection, current droop, and overall emission efficiency.

The invention relates to an electron source, a preparation method of the electron source, an electron gun and application of the electron source. The electron source comprises an optical fiber and an electron emission layer, the optical fiber comprises a fiber core used for transmitting laser and a wrapping layer wrapping the fiber core, and the end face of the light outlet end of the optical fiber and the extending direction of the fiber core are arranged at an angle. The electron emission layer is arranged on the end face of the light emitting end of the optical fiber, and the electron emission layer at least comprises an electron excitation layer covering the fiber core. The electron excitation layer comprises at least one of a zero-dimensional material, a one-dimensional material and a two-dimensional material. Low-dimensional materials such as zero-dimensional materials, one-dimensional materials or two-dimensional materials are adopted as materials of the electron excitation layer, the low-dimensional materials have the atomic-scale thickness, back-incident electrons can be emitted without in-vivo transmission, and the electron emission efficiency is high; and the low-dimensional material has the characteristics of no dangling bond, stable property, high melting point, difficulty in damage, good stability, long service life and the like.

A display device includes a structure where a first electrode is located in an area other than a depressed portion of an insulating layer and includes at least one trunk portion and at least one branch portion connected to the trunk portion, and thereby, is capable of improving emission efficiency or light extraction efficiency.

The invention relates to the technical field of light-emitting devices, in particular to a blue-violet light LED device containing a perovskite material, which comprises an ITO anode, a hole transport layer, a perovskite layer, an electron transport layer, an electron injection layer and a cathode material layer which are sequentially overlapped, the perovskite layer is a quasi-two-dimensional / three-dimensional heterojunction perovskite material and comprises a three-dimensional perovskite material and a quasi-two-dimensional layered structure material wrapping the surface of the three-dimensional perovskite material, the molecular formula of the three-dimensional perovskite material is Cs3Bi2Cl6Br3, and the molecular formula of the quasi-two-dimensional layered structure material is (4-F-PEA) 2PbCl4. The quasi-two-dimensional / three-dimensional heterojunction perovskite material is a blue-violet light perovskite material with high stability, high blue-violet light emission efficiency and high color purity, and is beneficial to improving the light-emitting color purity, the light-emitting efficiency and the environmental tolerance of a blue-violet light LED device and improving the performance of the blue-violet light LED device.

A light-emitting element includes a first electrode, a second electrode, and at least one functional layer disposed between the first electrode and the second electrode and including an amine compound represented by Formula 1. The light-emitting element may exhibit high emission efficiency and improved service life characteristics:

The present invention discloses an artificial intelligence-based method and system for predicting the electricity carbon emissions of an intelligent park, which relates to the field of carbon emissions prediction. The method includes: obtaining the external power purchase activity data and direct power consumption data of the intelligent park, and calculating the external power purchase carbon emissions and direct power consumption carbon emissions in the intelligent park by using the electricity carbon emission accounting standard to obtain the total carbon emissions; constructing a relationship model between the total carbon emissions and the energy consumption of electrical equipment, predicting the total electricity carbon emissions generated by the electrical equipment in the intelligent park under any operation strategy, and judging the emission efficiency corresponding to the total electricity carbon emissions; generating a power use allocation model based on the total electricity carbon emissions and the emission efficiency, and determining the electricity carbon emission reduction strategy in the intelligent park. The present invention can optimize the power use structure of the park according to the total electricity carbon emissions and the emission efficiency, and help the intelligent park achieve low-carbon goals and optimize energy use.

A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two more LED structures. Light from the micro multi-color LED device is emitted horizontally from each of the LED structures and reflected upward via some reflective structures. In some embodiments, each LED structure is connected to a pixel driver and / or a common electrode. The LED structures are bonded together through bonding layers. In some embodiments, planarization layers enclose each of the LED structures or the micro multi-color LED device. In some embodiments, one or more of reflective layers, refractive layers, micro-lenses, spacers, and reflective cup structures are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.

An organic electroluminescence device includes a first electrode and a second electrode, and a plurality of organic layers disposed between the first electrode and the second electrode, wherein at least one organic layer among the plurality of organic layers includes an amine compound represented by Formula 1, and thereby exhibits improved emission efficiency.

The driving voltage of a light-emitting device is lowered to improve the emission efficiency. The light-emitting device includes a first electrode, a second electrode, a light-emitting layer, and a first layer. The light-emitting layer is positioned between the first electrode and the second electrode. The first layer is positioned between the first electrode and the light-emitting layer. The light-emitting layer contains a light-emitting substance. The first layer contains a first organic compound. The HOMO level of the first organic compound is lower than or equal to −5.40 eV. The first organic compound provides a light-emitting device represented by General Formula (G1) below (Note that Q is O or S in General Formula (G1). One of A and B represents a group represented by General Formula (g1) above, and the other of A and B and R1 to R31 each independently represent any of H, D, an alkyl group, a cyclic saturated hydrocarbon group, an alkoxy group, a cyano group, halogen, a haloalkyl group, and an aromatic hydrocarbon group. Note that R9 and R10 may be bonded to each other to form a spirocyclic structure).

A light emitting device according to an embodiment includes a first electrode and a second electrode facing the first electrode, and a plurality of organic layers between the first electrode and the second electrode, wherein at least one among the plurality of organic layers includes a fused polycyclic compound represented by Formula 1 below, thereby showing improved emission efficiency.

The invention relates to a 3 [mu] m SOI-based polarization insensitive waveguide grating antenna for optical sensing. The waveguide grating antenna provides a substrate and a ridge waveguide located above the substrate; grating teeth are formed on the upper surface of the ridge waveguide through shallow etching; slab areas on the two sides of the ridge waveguide are provided with deep etching which is etched to the buried oxide layer. The OPA transmit-receive system introduced in the invention has high diffraction efficiency (gt; 70%), which is far greater than 50% emission efficiency of a conventional fishbone-shaped antenna; polarization is insensitive, and inherent loss of a polarization controller in the system can be eliminated; and the beam divergence is small (less than 0.01 degree), and the method has a good application prospect.

To provide a compound capable of improving the emission efficiency of an organic EL device.SOLUTION: The compound is represented by the formula (1). In the formula, RX is an alkyl group having 1 to 50 carbon atoms, or the like; RY is an aryl group having 6 to 50 carbon atoms, or the like; m1+m2=4; m1 is 0 to 4; HAr is a heterocyclic group; and *a is a position of bonding to any of R105 to R110.SELECTED DRAWING: None

The invention discloses an H-shaped armature of an electromagnetic rail gun, and belongs to the technical field of electromagnetic emission. The wind power generation device comprises a windward front surface, a windward curved surface, a windward inner surface, a top surface, a bottom surface, side surfaces, a leeward front surface, a leeward curved surface and a leeward inner surface, the graphene film is characterized in that both the top surface and the bottom surface are coated with graphene. According to the invention, the stability in electromagnetic emission is better, the emission efficiency can be effectively improved, and the graphene coating is coated on the surface of the armature in combination with the shape, so that the armature can reach a higher average speed and has a better arc ablation resistance effect, and the armature also has a certain lubrication effect; the conductive filler can be used as a good interface conductive filler to improve the contact state of a pivot rail interface. Therefore, the problems of'planing ', 'ablation', 'adhesion ', 'transition' and the like in the electromagnetic gun launching process are further improved.

A light emitting device of an embodiment includes a first electrode, a second electrode disposed on the first electrode, and at least one functional layer disposed between the first electrode and the second electrode. The at least one functional layer includes a polycyclic compound represented by Formula 1, thereby showing high emission efficiency properties and improved life characteristics.

Provided is a blue light emitting organic EL device having high emission efficiency and a long lifetime. This organic EL device includes one or more light emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light emitting layers includes a first host selected from indolocarbazole compounds, a second host selected from the compounds represented by the following general formula (2), and, as a light emitting dopant, a polycyclic aromatic compound represented by the following general formula (3) or a polycyclic aromatic compound represented by the general formula (3) as a substructure, wherein Y4 is B, P, P═O, P═S, Al, Ga, As, Si—R4 or Ge—R5, and X4 is O, N—Ar4, S or Se.

The invention discloses a magnetic resistance type electromagnetic coil emitter power supply based on a half-control switch and a control method, and belongs to the technical field of electromagnetic emission. Which comprises a primary power supply and a transmitting coil connected with the primary power supply, and is characterized in that a bridge circuit is arranged between the primary power supply and the transmitting coil, a pulse capacitor is arranged in the bridge circuit, and the pulse capacitor and the transmitting coil are connected through a first discharge loop and a second discharge loop; half-control switch devices are arranged in the first discharge loop and the second discharge loop, and the conduction directions of the first discharge loop and the second discharge loop are opposite and the first discharge loop and the second discharge loop are conducted in a time-sharing manner. According to the magnetic resistance type electromagnetic coil emitter power supply based on the half-controlled switch and the control method, the pulse capacitor and the direct-current power supply are combined, so that wide pulses can be generated, under the condition of the same acceleration effect, the current amplitude is greatly reduced, the magnetization saturation degree of an armature can be reduced, and the emission efficiency of a system can be improved.

The utility model discloses a kind of cathode heater subassemblies for klystron electron gun, it is characterized in that, including: cathode base, heater sleeve, heater and detachable heat shield assembly, the upper and lower two end surfaces of cathode base are respectively provided with emitting surface and mounting groove, heater sleeve is detachably fixed in mounting groove, and the end surface of heater sleeve back to cathode base is equipped with accommodating groove;Heater is installed in accommodating groove, and the part of heater in accommodating groove is wrapped with insulating layer;Heat shield assembly includes outer heat shield and inner heat shield, outer heat shield is sleeved in cathode base, and inner heat shield is installed in outer heat shield and covers heater sleeve and heater.The utility model can realize reversibility dismounting and maintenance, and heater material volatilization can be avoided directly deposited on the emitting surface of cathode base, help to maintain the emitting surface cleanliness of cathode base, to improve electron emission efficiency, high-temperature solder can also be reduced in use, reduce cost.

The invention relates to a field emission cathode structure and a preparation method thereof. The method comprises the following steps: obtaining a first substrate layer with a polished surface, wherein the first substrate layer adopts a silicon wafer or a metal sheet; processing the first substrate layer into an arrayed grid mesh; sequentially depositing a metal conductive layer and a diffusion barrier layer on the outer surface of the grid mesh; depositing a SiNx electret layer on the diffusion barrier layer, and regulating and controlling nitrogen vacancy distribution of the SiNx electret layer through a gradient doping process; depositing an Al2O3 gradient heterojunction layer on the SiNx electret layer, and regulating and controlling the oxygen vacancy concentration of the Al2O3 gradient heterojunction layer through a gradient doping process to obtain a composite electret grid mesh; and aligning and bonding the composite electret grid mesh, the arrayed cathode emitter and the insulating layer to obtain the field emission cathode structure. By adopting the method, the high emission efficiency and stability of the cathode can be improved.

A light-emitting element with high emission efficiency and high reliability is provided. The light-emitting element includes a host material and a guest material in a light-emitting layer. The host material has a function of converting triplet excitation energy into light emission and the guest material emits fluorescence. The molecular structure of the guest material is a structure including a luminophore and protecting groups, and five or more protecting groups are included in one molecule of the guest material. The introduction of the protecting groups into the molecule inhibits energy transfer of triplet excitation energy by the Dexter mechanism from the host material to the guest material. As the protecting group, an alkyl group or a branched-chain alkyl group is used.

Disclosed are light-emitting elements and amine compounds for light-emitting elements. The light-emitting element includes: a first electrode; a second electrode; and at least one functional layer provided between the first electrode and the second electrode and including an amine compound represented by Formula 1. The light-emitting element can exhibit high emission efficiency and improved service life characteristics: Formula 1.

The utility model discloses a holmium laser generating device which comprises a pulse xenon lamp, a holmium laser rod is horizontally arranged in a ceramic cavity from bottom to top, two ends of the pulse xenon lamp horizontally extend to the outside of the ceramic cavity and are respectively connected with a motor chuck, one end of the holmium laser rod horizontally extends to the outside of the ceramic cavity, and the other end of the holmium laser rod horizontally extends to the inside of the ceramic cavity. The total-reflection film is plated on one end face of the holmium laser rod, the other end of the holmium laser rod horizontally extends out of the ceramic cavity, and the semi-reflection film is plated on the other end face of the holmium laser rod; the semiconductor laser assembly comprises a semiconductor laser and a semiconductor laser base, the semiconductor laser is installed at the end, close to the total-reflection film, of the shell through the semiconductor laser base, and laser beams emitted by the semiconductor laser are aligned with the total-reflection film; the coupler is mounted at one end, close to the semi-reflective film, of the shell through the coupler seat, and a laser focusing channel of the coupler is aligned with the semi-reflective film. According to the utility model, the laser emission efficiency is improved, and the laser light path stability is improved.

The utility model discloses a proton exchange membrane type fuel cell catalytic device, belongs to the technical field of fuel cells, and aims to solve the problem that a traditional bipolar plate is poor in drainage performance and heat dissipation effect in the operation process of a cell. According to the technical scheme, the proton exchange membrane type fuel cell catalytic device is characterized by comprising a bipolar plate, a sealing ring, a diffusion layer and a proton membrane, the bipolar plate is provided with a plurality of runners connected end to end, the cross section of each runner is wavy, expansion slots are formed in peak valleys and trough positions of the runners, heat conduction pieces are fixedly connected in the expansion slots, and the proton membrane is arranged in the heat conduction pieces. An expansion channel is formed between the peripheral wall of the heat conduction piece and the inner wall of the expansion groove, and dynamic distribution of reactants and products is improved by increasing the surface area of a flow channel through the expansion groove and the heat conduction piece, so that the utilization efficiency and the discharge efficiency of water are improved, and meanwhile, the heat discharge capacity is enhanced; and the stability and the reliability of the proton exchange membrane type fuel cell are further improved.

The invention discloses a silicon-based micro-channel plate (MCP) structure and a manufacturing method thereof, relates to the technical field of semiconductor device manufacturing, and aims to solve the problems of poor high temperature resistance, insufficient etching precision, film layer quality defect and process synergy deficiency of a traditional glass-based / organic-based MCP. An 8-inch N-type monocrystalline silicon wafer is adopted in the structure, the thickness of the N-type monocrystalline silicon wafer is (250-350) + / -25 microns, micropores of 3-10 microns are evenly distributed, the hole pitch is 7-22 microns, the inclination angle is 6-12 degrees, the side wall roughness is smaller than or equal to 50 nm, the perpendicularity deviation is smaller than or equal to + / -0.5 degrees, an AlO or AlO / HfO / AlO electron multiplication layer with the thickness of 10-30 nm is prepared on the inner wall of a channel through ALD, and a Cr / Ni electrode with the thickness of 50-80 nm is plated on the surface. According to the method, the OES is used for monitoring SiFs in real time. According to the invention, the double targets of < = 30% of 1kg impact fracture rate and stable electron multiplication gain are achieved, the tolerable temperature reaches 800 DEG C, the secondary electron emission efficiency is improved by 25%, the production efficiency is improved by 20%, the cost is reduced by 15%, and the method is suitable for the high-sensitivity detection fields of night vision imaging, particle detection and the like.

An organic electroluminescent device of an embodiment is provided. The organic electroluminescent device includes a first electrode and a second electrode disposed opposite to each other, and a plurality of organic layers disposed between the first electrode and the second electrode, wherein at least one among the organic layers includes a fused polycyclic compound represented by the following Formula 1, thereby exhibiting improved emission efficiency. [Formula 1] wherein, X, Y, R 11 to R 21 are the same as defined in the specification.

The invention relates to a reverse conducting IGBT device and a preparation method thereof, electronic equipment and a vehicle, and the reverse conducting IGBT device is characterized in that a transition region is arranged between an IGBT region and a diode region of the reverse conducting IGBT device, the front surface structure of the transition region is consistent with the front surface structure of the diode region, and the back surface structure of the transition region is consistent with the back surface structure of the IGBT region. In the working mode of the diode, the anode emission efficiency is reduced, and the effect of reducing the reverse recovery current and the reverse recovery loss of the diode is achieved; in the IGBT working mode, more paths are provided for hole extraction, the turn-off speed of the IGBT is increased, and the turn-off loss of the device is reduced; meanwhile, the performance of the diode region and the IGBT region is improved, and the stability and reliability of the device are improved.

A material for an organic electroluminescent device having high emission efficiency and long life and an organic electroluminescent device including the same. The material for an organic electroluminescent device is represented by the following Formula 1.

To provide a light-emitting element having high emission efficiency and to provide a light-emitting device and an electronic device that have low power consumption and are driven at low voltage, a carbazole derivative represented by General Formula (1) is provided. In the formula, α 1 , α 2 , α 3 , and α 4 each represent an arylene group having less than or equal to 13 carbon atoms; Ar 1 and Ar 2 each represent an aryl group having less than or equal to 13 carbon atoms; R 1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R 2 represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n each independently are 0 or 1.

An organic electroluminescence device of an embodiment includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region, wherein the emission layer includes a polycyclic compound represented by Formula 1, thereby exhibiting high emission efficiency.

In one aspect, a display panel (110) includes a plurality of sub-pixels (SP1, SP2, SP3), each of the plurality of sub-pixels (SP1, SP2, SP3) including: a substrate (111); a first insulating layer (222) on the substrate (111) protruding from the substrate (111), the first insulating layer (222) having two lateral surfaces; and a light-emitting device (ED) on the first insulating layer (222) having a first electrode (E1), a second electrode (E2), and a light-emitting layer (EL), the first electrode (E1) at least partially covering the first insulating layer (222), the second electrode (E2) being located on the two lateral surfaces.