386 results about "Electroluminescence" patented technology

The invention discloses an LED (Light Emitting Diode) energy-saving street lamp system self-adaptive to an ambient light effect and an illumination adjusting method thereof, and belongs to the technical field of novel illumination control and green energy conservation. The system comprises a light environment sensing module, a traffic flow monitoring module, an LED driving power supply and an electroluminescent illumination module composed of a plurality of light emitting diodes. The main control module is configured to execute active lighting effect decoupling logic, namely, when the electroluminescent lighting module keeps steady-state lighting, the driving power supply is controlled to inject a micro-disturbance modulation signal which cannot be perceived by human vision into output current, and illuminance response data of the light environment perception module are synchronously collected; the road surface reflectivity coupling coefficient is obtained in real time by calculating the change ratio of the response data to the modulation signal, then the reflected light component excited by the street lamp itself is accurately removed from the total illumination value, and the pure environment background illumination is decoupled. The problems of misoperation and energy waste caused by self-luminous interference of a traditional light-operated street lamp are solved.

The invention provides a photovoltaic module electroluminescent image acquisition system and method, and a defect detection method, which can be used in the technical field of photovoltaic power generation. The system comprises a liquid crystal polarization modulator, an infrared camera and an image processing unit, the liquid crystal polarization modulator is arranged in front of a lens of the infrared camera and used for changing the polarization direction of incident light entering the lens of the infrared camera; the infrared camera is used for shooting the photovoltaic module to be detected so as to be used for collecting an infrared image set of the photovoltaic module; wherein the infrared image set comprises a first infrared image collected during the first polarization direction and a second infrared image collected during the second polarization direction under the same field of view; and the image processing unit is used for carrying out differential processing on the first infrared image and the second infrared image to obtain an electroluminescent image of the photovoltaic module. According to the invention, the electroluminescent signal of the photovoltaic module is extracted through a pure optical polarization modulation means, so that the collection efficiency of the electroluminescent image of the photovoltaic module is greatly improved.

A light-emitting element includes an anode, a cathode, and an electroluminescent layer between the anode and the cathode. The electroluminescent layer includes an emission layer containing a host material and a first fluorescent material. A bandgap of the host material is equal to or greater than 3.0 eV and equal to or less than 3.4 eV. A difference in a level of a lowest unoccupied molecular orbital between the host material and the first fluorescent material is equal to or greater than 1.0 eV. A difference in a level of a highest occupied molecular orbital between the host material and the first fluorescent material is equal to or less than 0.3 eV

The invention provides an electrical equipment defect identification method and system based on machine vision, and relates to the technical field of equipment defect identification, and the method comprises the steps: collecting and preprocessing a standard electroluminescent image, a standard infrared thermal image and a standard visible light image of a target photovoltaic string under different time windows through an imaging device carried by an unmanned aerial vehicle, and carrying out the collection of the standard electroluminescent image, the standard infrared thermal image and the standard visible light image; meanwhile, recording environmental parameters collected each time; analyzing visual defect features and attenuation gradient features in the standard electroluminescent image, and performing fusion verification by combining the standard infrared thermal image, the standard visible light image and the electrical performance data to obtain definite judgment of potential-induced attenuation; for the photovoltaic module which is diagnosed and judged to have potential-induced degradation, based on the environmental parameters, evaluating by using a time sequence analysis method to obtain the evolution rate of the potential-induced degradation, and mapping to generate the risk level of the potential-induced degradation; and generating a structured defect identification report. And the accuracy of defect identification of the power equipment is improved.

A method for manufacturing a display device that can easily achieve higher resolution is provided. A display device having both high display quality and high resolution is provided. A first EL film is deposited over a first pixel electrode, a first sacrificial film is formed to cover the first EL film and a first electrode, and the first sacrificial film and the first EL film are etched, so that a first EL layer is formed over the first pixel electrode. Then, the first sacrificial film is removed to expose the first electrode. Furthermore, a common electrode is formed over the first EL layer and the first electrode. The first EL film is etched by dry etching, and the first sacrificial film is removed by wet etching.

The invention belongs to the technical field of electroluminescent fiber devices, and particularly relates to a dynamic color-changing electroluminescent fiber device and a preparation method thereof. The electroluminescent fiber device comprises a three-color electroluminescent fiber and a driving control circuit, the three-color electroluminescent fiber comprises an inner electrode conductive fiber, an outer electrode conductive fiber, three luminescent functional layers and a shared electrode; the driving control circuit comprises a lithium battery, an FPGA (Field Programmable Gate Array), an isolation inversion boost module and the like; the lithium battery supplies power to the whole circuit; the circuit system provides four independent output ports which are connected with the four electrodes; the three light-emitting functional layers are of a stacked structure formed by red, green and blue light-emitting active slurry through a step-by-step coating method, and the driving circuit independently controls the active light-emitting layers of the three colors, so that the light-emitting colors are free of crosstalk and can be regulated and controlled in real time, and dynamic color-changing light emitting of full-color-gamut light emitting is achieved. The color gamut is wide, the stability is high, and color crosstalk between the light-emitting layers is avoided; the method is good in repeatability, low in cost and suitable for industrial production.

Provided is a light-emitting material with polycyclic ligand. The light-emitting material is a metal complex with polycyclic ligand and may be used as a light-emitting material in an electroluminescent device. While maintaining a very narrow FWHM, these novel metal complexes can better adjust the light-emitting color of the device, reduce the driving voltage of the device or maintain the driving voltage at a low level, improve device efficiency, greatly increase the lifetime of the device, and provide better device performance. Further provided are an electroluminescent device and a compound composition.

The invention specifically relates to a multi-parameter state monitoring and fault diagnosis system for an intelligent circuit breaker, and relates to the technical field of state monitoring and fault diagnosis of power equipment. A surface / bulk charge and electroluminescent optical monitoring module; a mechanical-electrical performance correlation analysis module; and a diagnosis evaluation module. According to the invention, the dielectric property micro-change module adopts a low-frequency superposition excitation and partial discharge fingerprint spectrum fusion technology, and can sensitively capture dielectric micro-change of gradual deterioration such as damp and uniform aging; the surface / body charge and electroluminescent module performs mixed optical imaging through a non-contact electrostatic potential array and PMT / APD, and accurately recognizes surface charge accumulation and early electrical tree growth; the mechanical-electrical association module quantifies thermal mechanical stress accumulation and impact vibration influence based on FBG strain monitoring and multi-physics field coupling modeling.

The invention relates to a double-coordination passivated red-light perovskite quantum dot and a preparation method and application thereof. The preparation method comprises the following steps: preparing a monovalent cation precursor from cesium carbonate, 1-octadecene and oleic acid; preparing a lead source precursor from lead halide, zinc halide, 1-octadecene, diisooctyl hypophosphorous acid and oleylamine; thermally injecting the monovalent cation precursor into the lead source precursor, and cooling to prepare a perovskite quantum dot solution; performing anti-solvent purification on the perovskite quantum dot solution to obtain red light perovskite quantum dots; a process of preparing a double-coordination passivated red light perovskite quantum dot from the red light perovskite quantum dot and taurosulfonamide hydrochloride; the invention also discloses an application of the double-coordination passivated red light perovskite quantum dot prepared by the preparation method in preparation of an electroluminescent diode. The post-treatment passivation operation method is simple and convenient, and the quantum dot treated by the double-coordination ligand achieves the purpose of preparing the halide perovskite quantum dot with excellent optical performance and excellent performance of the prepared electroluminescent diode.

Provided are an electroluminescent device, a method of manufacturing the same, and a display device including the same, the electroluminescent device including a first electron auxiliary layer, a first light emitting layer, and a first electrode disposed on a first surface of a transparent electrode; and a second electron auxiliary layer, a second light emitting layer, and a second electrode disposed on a second surface of the transparent electrode, wherein the first electron auxiliary layer and the second electron auxiliary layer each include a plurality of zinc oxide nanoparticles, a ratio (t1 / t0) of a thickness (t1) of the first electron auxiliary layer to a thickness (t0) of the transparent electrode and a ratio (t2 / t0) of a thickness (t2) of the second electron auxiliary layer to the thickness (t0) of the transparent electrode are each in the range of about 0.1 to about 4.0.

An electroluminescent device includes a first electrode and a second electrode, which are spaced apart from each other (e.g., facing each other), and an emission layer disposed between the first electrode and the second electrode. The emission layer is configured to emit first light having a predetermined peak emission wavelength, and includes a semiconductor nanoparticle and a carbon nanoparticle. The carbon nanoparticle has a dimension of greater than or equal to about 2 nm and less than or equal to about 50 nm.

This application relates to the field of insulated switch application technology, and particularly to a method and apparatus for characterizing partial discharge features in ultra-high voltage direct current (UHVDC) GIS. The method includes: generating a partial discharge pulse sequence based on the light signals generated by electroluminescence and gas ionization emission in the UHVDC gas-insulated switchgear; generating a spectrum of at least one parameter pair based on the amplitude and corresponding time of the partial discharge pulses; and generating a feature fingerprint map of at least one parameter pair based on the spectrum. The method also involves extracting at least one statistical feature from the kernel density sequence of the at least one parameter pair based on the feature fingerprint map, and generating a characterization result of the partial discharge feature based on the at least one statistical feature. This solves the problem that partial discharge detection is easily affected by electromagnetic interference, mechanical vibration, and environmental noise, making it difficult to effectively extract and accurately identify the actual partial discharge signal, thus affecting the accuracy and reliability of the detection results.

The application discloses a kind of high level dipole orientation tetraphenyl benzene derivatives and its preparation method and application, the tetraphenyl benzene derivative has structure shown in formula (I):In formula (I), any two of R1, R2, R3, R4 Four groups are each independently selected from N-containing electron-donating group, and the other two are each independently selected from electron-withdrawing group.The tetraphenyl benzene derivative is prepared using two-step suzuki coupling reaction.The tetraphenyl benzene derivative of the application has excellent solid-state light emitting efficiency and high molecular level dipole orientation, and can be used as non-doped light-emitting layer to prepare non-doped blue light organic electroluminescent device with high efficiency, low degree of efficiency roll-off, low start voltage, with maximum external quantum efficiency reaching 8.32%, which is greatly improved compared with prior art, and has wide application prospect in the field of organic optoelectronics.

Provided is a highly reliable display device. Provided is a display device with high contrast. Provided is a display device with high visibility. Provided is a high-brightness display device. Provided is a high-definition display device. Provided is a display device with high resolution. The display device includes a light-emitting device including a first electrode on a first insulating layer, an EL layer on the first electrode, and a second electrode on the EL layer. The first electrode covers a part of an upper surface and a side surface of the first insulating layer. An end of the first electrode is located between the upper surface and a lower surface of the first insulating layer.

A method for manufacturing an EL element, includes: a first quantum dot layer forming step of forming a quantum dot layer containing first quantum dots; a first quantum dot layer coating step of exposing a first portion included in the first quantum dot layer, and coating a second portion included in the first quantum dot layer, the first quantum dot layer coating step including: a photoresist layer forming step; and a photoresist layer patterning step; a solution supplying step of applying or spraying a solution only to or on the first portion, the solution containing first molecules each having a plurality of coordinating functional groups coordinatable with the first quantum dots and; a removing step of removing the second portion of the first quantum dot layer and the patterned photoresist layer, such that the first portion of the first quantum dot layer forms a first light-emitting layer.

A light-emitting diode chipset, a backlight module for a display, and a lighting module. The light-emitting diode chipset generates white light, and comprises at least one multi-wavelength chip. The multi-wavelength chip comprises an N-type semiconductor layer (103), a P-type semiconductor layer (104), and a first light-emitting layer (106a) and a second light-emitting layer (106b), which are disposed between the N-type semiconductor layer (103) and the P-type semiconductor layer (104) and are stacked, wherein the first light-emitting layer (106a) generates light of a first wavelength band by means of electroluminescence, and excites the second light-emitting layer (106b) to generate light of a second wavelength band, the number of wavelengths included in the light of the first wavelength band and the number of wavelengths included in the light of the second wavelength band both being greater than or equal to 1 and less than or equal to 10; and there is a hole blocking region between the first light-emitting layer (106a) and the second light-emitting layer (106b).

A light-emitting device includes a first electrode over an insulating surface, a second electrode facing the first electrode, and an EL layer between the first electrode and the second electrode. One of the first electrode and the second electrode is an anode, and the other is a cathode. The EL layer includes a light-emitting layer, a first layer, and a second layer. The first layer and the second layer are positioned between the light-emitting layer and the cathode. The first layer is positioned between the first electrode and the second layer. The second layer is positioned between the first layer and the second electrode. The light-emitting layer includes a first light-emitting substance and a second light-emitting substance. The first light-emitting substance is a substance capable of converting triplet excitation energy into light emission. The second light-emitting substance is a fluorescent substance. An emission peak wavelength of the first light-emitting substance is shorter than an emission peak wavelength of the second light-emitting substance. A GSP_Slope of the second layer is larger than a GSP_Slope of the first layer.

An organic electroluminescent device (OLED, organic light emitting device) comprising: an anode; a cathode, arranged opposite to the anode; and at least one light emitting layer arranged between the anode and the cathode; wherein the at least one light emitting layer comprises beside at least one emitter EM1 having a surface charge density SCDEM1, a host system comprising at least two host materials, wherein the first host material is a hole-transporting host material h-TMM having a surface charge-density SCDH1 and the second host material is an electron-transporting host material e-TMM having a surface charge-density SCDH2; characterized in that the surface charge-density of the host system SCDhost is > 0.5 mC / m2.

Provided is a display device with high display quality. A first pixel, a second pixel provided adjacent to the first pixel, a first insulating layer, a second insulating layer over the first insulating layer, and a third insulating layer over the second insulating layer are included; the first pixel includes a first pixel electrode, a first EL layer over the first pixel electrode, and a common electrode over the first EL layer; the second pixel includes a second pixel electrode, a second EL layer over the second pixel electrode, and the common electrode over the second EL layer; the first insulating layer and the third insulating layer each contain an inorganic material; the second insulating layer contains an organic material; the second insulating layer overlaps with the side surface of the first EL layer and the side surface of the second EL layer with the first insulating layer therebetween; the second insulating layer overlaps with the common electrode with the third insulating layer therebetween; and the third insulating layer is in contact with the first insulating layer in a region not overlapping with the second insulating layer.

A chiral dinuclear Zn(II)-complex based on chiral Salen-type Schiff base ligands (R, R / S, S-L) and its preparation method, along with its application in electro-induced circularly polarized luminescence, were presented. With changes in the configuration of the chiral Salen-type Schiff base ligands, this type of chiral dinuclear Zn(II)-complex exhibited different light colors in the visible region. At room temperature, the chiral dinuclear Zn(II)-complex developed based on chiral Salen-type Schiff base ligands introduced by the methoxy (-OMe) functional group showed maximum emission peaks of 467 and 462 nm in CH2Cl2 solution, with CIE coordinates of (0.156, 0.192) and (0.158, 0.190), respectively, located in the blue light emission region. It exhibited a strong ground-state chiral signal and Cotton effect, with an asymmetry factor |g PL |~10 ‑4 The electroluminescent devices CP-OLED-R,R-II and CP-OLED-S,S-II all have a start-up voltage of 6V. Their maximum emission wavelengths for electro-polarized emission are 488nm and 496nm, respectively, with CIE coordinates located in the blue light region at (0.288, 0.305) and (0.283, 0.304), respectively. The maximum current efficiency of CP-OLED-R,R-II is 0.90cd / A, the maximum power efficiency is 0.47lm / W, and the maximum external quantum efficiency is 0.43%. The maximum current efficiency of CP-OLED-S,S-II is 0.83cd / A, the maximum power efficiency is 0.40lm / W, and the maximum external quantum efficiency is 0.38%. The asymmetry factor |g EL |~10 ‑4 .

The invention relates to a flexible light source and photocatalyst collaborative purification cabin device, which comprises an electroluminescent module configured to emit visible light to realize cabin atmosphere illumination; and the photocatalyst module is arranged on a light irradiation path of the electroluminescent module, and an absorption spectrum of the photocatalyst module is matched with an emission spectrum of the electroluminescent module. The excitation wavelength of the photocatalyst is expanded from ultraviolet light to a visible light region, and the flexible electroluminescent fibers with matched spectrums are adopted as a synergistic excitation source, so that the same beam of visible light can be used as an atmosphere light source to be perceived by human eyes to meet the requirement of visual comfort on one hand, and can be used as an excitation light source to activate the photocatalyst on the other hand to meet the requirement of visual comfort on the other hand. The health purification function is achieved, the problems that in the prior art, purification and illumination are mutually contradictory in spectrum requirements and are mutually independent in system structure are fundamentally solved, and collaborative linkage of vision and smell is achieved.

The invention provides a conjugated polymer containing a phenanthroimidazole group as well as a preparation method and application of the conjugated polymer. A light-emitting unit phenanthroimidazole group is introduced into a conjugated main chain of a conjugated polymer donor unit, so that the molecular energy level of the polymer is effectively adjusted, the polymer has high fluorescence quantum yield and electroluminescence efficiency, non-radiation energy loss is effectively reduced, the photoelectric conversion efficiency and open-circuit voltage of a device are further improved, and the photoelectric conversion efficiency and the open-circuit voltage of the device are improved. And the material can be widely applied to photoelectric conversion, field effect devices and the like.

The invention relates to a tri-pyrazolo boron Eu (II) complex, which has the following structure as shown in the specification, the complex shows high photoluminescence quantum yield and excellent air stability and thermal stability, and is suitable for a luminescent layer in an electroluminescent device. The Eu (II) complex Eu (Tp3Me, 5Me) 2 is used as a guest material to be doped in a host material such as SiCzCz, an efficient and stable OLED can be prepared, the maximum external quantum efficiency reaches 16.9%, LT90 reaches 1835 seconds under the initial brightness of 1000 cd / m, and compared with an OLED prepared from the Eu (II) complex Eu (Tp3Me, 5Me) 2 without large steric hindrance, the efficiency and stability are greatly improved, which shows that the performance of the Eu (II) complex OLED can be improved by introducing the large steric hindrance group.

A light-emitting device having favorable heat resistance is provided. The light-emitting device includes an anode, a cathode, and an EL layer positioned between the first anode and the cathode. The EL layer includes a light-emitting layer and a first layer. The first layer is positioned between the light-emitting layer and the cathode. The light-emitting layer and the first layer are in contact with each other. The light-emitting layer contains a first organic compound, a second organic compound, and a light-emitting substance. The first layer contains a third organic compound. The first organic compound and the third organic compound each have an electron-transport property. The second organic compound has a hole-transport property. The light-emitting substance emits red light. The first organic compound is represented by General Formula (G100). The third organic compound is represented by General Formula (G300).

A method for manufacturing an electroluminescent element includes: forming a first electrode on a substrate; forming a first insulating layer covering the first electrode; forming a second electrode disposed on the first insulating layer and having a region overlapping with the first electrode; forming a first electron transport layer in contact with the second electrode; forming a second insulating layer covering the region overlapping with the second electrode and having an opening in the region overlapping with the first electrode. The method involves coating the opening with a liquid composition containing a metal oxide material and a solvent; removing the solvent after coating to form the second electron transport layer; forming a light-emitting layer overlapping the second electron transport layer and containing an electroluminescent material; and forming a third electrode in the region overlapping with the light-emitting layer.

The invention provides a 4-phenylbenzo [f] phthalazine-1 (2H)-ketone derivative, a preparation method thereof and an electroluminescent device. The structural formula of the 4-phenylbenzo [f] phthalazine-1 (2H)-ketone derivative is shown in the specification. According to the electroluminescent device, the 4-phenylbenzo [f] phthalazine-1 (2H)-ketone derivative is used as a guest luminescent material, the luminescent efficiency of the electroluminescent device is effectively improved, the service life is prolonged, light emitted by the electroluminescent device has good color purity, the emission wavelength of the electroluminescent device is in the range from blue light to visible light, and the electroluminescent device has good application prospects. And the application requirements of different scenes are met.

The invention relates to the technical field of snowboards, in particular to an electrochromic luminous snowboard. Liquid laser electroluminescent paint LL is sprayed on the surface of the snowboard body according to a preset pattern to form a luminescent coating, and the power supply system outputs current and voltage to supply power to the LL coating under the control of the circuit controller, so that patterned luminescence of the snowboard is realized, and the brightness is adjustable. 2-20 rows of positive and negative electrode hole arrays are formed in the snowboard, and holes are screw holes, are used for screwing and mounting the fixator and the snowshoe and are used as electrode output ends to lead electric energy into the LL coating, so that the positions of the fixator and a power supply system are convenient to adjust. A direct current-alternating current micro inverter is arranged in the circuit controller, the output alternating current voltage is controlled to be 80V-220V, brightness adjustment is realized through voltage adjustment, and the luminous brightness of the LL coating is 300cd-750cd; the coating can adopt a spraying sequence of a conductive layer, an isolation reflecting layer, a light emitting layer, a transparent conductive layer and a transparent sealing layer, and the wear-resistant and waterproof performance is improved through four-layer coating packaging.

The application is specifically a multi-parameter state monitoring and fault diagnosis system for intelligent circuit breaker, and relates to the technical field of power equipment state monitoring and fault diagnosis, comprising: a dielectric property micro-change online monitoring module; a surface / body charge and electroluminescence optical monitoring module; a mechanical-electrical performance correlation analysis module; a diagnosis evaluation module.In the application, the dielectric property micro-change module adopts low-frequency superimposed excitation and partial discharge fingerprint spectrum fusion technology, which can sensitively capture the dielectric micro-change of gradual degradation such as dampness and uniform aging; the surface / body charge and electroluminescence module adopts non-contact electrostatic potential array and PMT / APD hybrid optical imaging, which can accurately identify surface charge accumulation and early growth of electrical treeing; the mechanical-electrical correlation module relies on FBG strain monitoring and multi-physical field coupling modeling, which can quantify the impact of thermal mechanical stress accumulation and impact vibration.

This invention relates to an electroluminescent device and a method for manufacturing the same. The electroluminescent device comprises: a substrate; a conductive layer on the surface of the substrate, the conductive layer comprising a busbar layer and a sub-busbar layer, with a spacer region between the busbar layer and the sub-busbar layer; a dielectric layer on the surface of the busbar layer of the conductive layer, the dielectric layer covering one side of the busbar layer adjacent to the spacer region and covering at least a portion of the spacer region; a light-emitting layer on the surface of the dielectric layer; and a transparent conductive layer on the surface of the light-emitting layer, the transparent conductive layer covering one side of the light-emitting layer and the dielectric layer facing the sub-busbar layer and one side of the sub-busbar layer adjacent to the spacer region, and covering the surface of the sub-busbar layer.

The application discloses a method for non-contact testing of quantum efficiency (EQE) and short-circuit current (ISC) of a solar cell, relates to the technical field of photovoltaic device testing, and aims to solve the problems that the existing quantum efficiency and short-circuit current measurement must contact electrodes, is slow and cannot cover new gateless or process pieces; a non-contact testing method of "multi-wavelength LED excitation + local shielding + carrier lateral diffusion" is provided; the method blocks the excitation light by using a shielding filter, and only transmits the electroluminescence signal of the shielding area; the EL power of each wavelength is extracted through phase-locked amplification and deep learning denoising, the continuous EQE curve is calculated by using the calibrated incident photon flux ratio, and the ISC is obtained by convolution of the AM1.5 spectrum.