1207 results about "Electroluminescence" patented technology

The invention relates to the technical field of power supply or power distribution circuit systems, in particular to a photovoltaic module fault monitoring system and method, and the system comprises an acquisition module, a power supply dynamic compensation module, a control optimization module, a power supply module and a digital twin module. The acquisition module acquires multi-source data through the infrared thermal imaging sensor, the electroluminescent detection unit and the current and voltage characteristic curve acquisition module, the power supply dynamic compensation module dynamically adjusts wavelet basis function parameters based on an improved whale optimization algorithm, and the power supply module fuses hot spot distribution, current and voltage abnormity and aging trend data. And driving the dynamic adjustment of the protection threshold. And the digital twin module synchronizes real and virtual system data through transfer learning, rehearses a fault path to generate a maintenance instruction and feeds back the maintenance instruction to an optimization prediction model, so that a monitoring, protection and self-optimization closed-loop system is formed, and the fault diagnosis precision and the system reliability in a complex environment are improved.

The invention relates to the technical field of photovoltaic module detection, in particular to a hot spot detection system and method for a photovoltaic module. Comprises: a multispectral imaging module configured to synchronously collect image data of a photovoltaic module in a visible light band, a near-infrared band and a long-wave infrared band; the electroluminescence analysis module is in signal connection with the multispectral imaging module and is used for acquiring carrier recombination radiation data of the photovoltaic module in a reverse bias state; the dynamic threshold value processing module is configured to establish a dynamic correlation model of the environment parameters and the hot spot characteristic parameters; the three-dimensional reconstruction module is configured to perform spatial registration on the multispectral imaging data and the electroluminescence data and construct three-dimensional temperature field distribution of the photovoltaic module; the defect positioning module is configured to determine the accurate position of a hot spot according to temperature field distribution and carrier recombination characteristics; according to the scheme, a novel detection system architecture with multi-mode collaboration, high dynamic adaptability and three-dimensional analysis capability is constructed.

The invention provides a photovoltaic module maintenance method, medium and system, and belongs to the technical field of photovoltaic module maintenance, and the method comprises the steps: obtaining the multi-dimensional data of a module through infrared thermal image scanning, IV curve testing, electroluminescent imaging, PID attenuation measurement, mechanical load testing and other technologies, and predicting the performance attenuation trend through a deep learning degradation prediction model. The core innovation lies in that a PVDefectNet model is utilized to carry out automatic defect identification on an electroluminescent image, traditional manual interpretation is replaced, health indexes are calculated and health levels are divided through an MPEvalue multi-parameter comprehensive evaluation function, a differentiated overhaul scheme is made based on an objective evaluation result, a repair effect is verified through an MPPT algorithm, and the repair efficiency is improved. The technical problem that the accuracy is not high enough due to the fact that photovoltaic module defect detection often depends on artificial experience is solved.

The invention discloses an unmanned aerial vehicle inspection system and method for a super-large-scale photovoltaic power station, and relates to the technical field of substation inspection, and the system comprises a multi-rotor unmanned aerial vehicle group deployment module, a honeycomb scanning network construction and three-dimensional radiation thermograph generation module, an inspection path dynamic planning module, and a photovoltaic panel inclination angle optimization path optimization module. The fault probability analysis module is used for collecting data through electroluminescence and infrared thermal imaging and generating a fault distribution diagram by fusing a historical defect feature library, the hidden fault recognition module is used for dynamically recognizing fault types in combination with multi-source data and flight instructions, and the intelligent charging docking module is used for carrying out intelligent charging. And adjusting a return flight threshold according to the fault level and battery attenuation and triggering a charging mechanism. The technical problems that in the prior art, a large-scale photovoltaic power station is low in inspection efficiency, insufficient in fault detection precision and poor in environmental adaptability are solved, and the technical effects of improving the inspection efficiency, the fault detection precision and the environmental adaptability through cooperative inspection of the unmanned aerial vehicle group are achieved.

Disclosed is a luminescent material with a polycyclic ligand. The luminescent material is a metal complex with a polycyclic ligand, which can be used as a luminescent material in an electroluminescent device. These novel metal complexes can better adjust the luminescent color of the device while maintaining a very narrow half-peak width, reduce the driving voltage of the device or maintain a low voltage level, improve the device efficiency, greatly increase the device life, and provide better device performance. Also disclosed is an electroluminescent device and a compound combination.

The embodiment of the invention provides a light-emitting diode chip set, a backlight module of a display and an illumination module, and relates to the technical field of semiconductors, the light-emitting diode chip set generates white light and comprises at least one multi-wavelength chip, the multi-wavelength chip comprises an N-type semiconductor layer, a P-type semiconductor layer, a first light-emitting layer and a second light-emitting layer, wherein the first light-emitting layer and the second light-emitting layer are arranged between the N-type semiconductor layer and the P-type semiconductor layer and are stacked. The first light-emitting layer generates light of a first wave band through electroluminescence and excites the second light-emitting layer to generate light of a second wave band, the number of wavelengths contained in the light of the first wave band and the number of wavelengths contained in the light of the second wave band are both larger than or equal to 1 and smaller than or equal to 10, and a hole isolation area exists between the first light-emitting layer and the second light-emitting layer. The multi-wavelength chip has higher external quantum efficiency, the limitation of a traditional white light scheme (blue chip + yellow fluorescent powder or blue chip + green fluorescent powder + red fluorescent powder) can be broken through, the reliability is improved, and the service life is prolonged.

The embodiment of the invention provides an electroluminescent element integrated packaging method and system, and belongs to the field of electroluminescent element integrated packaging, and the method comprises the steps: obtaining integrated packaging demand data, and obtaining a parameterized initial integrated packaging frame model; selecting an electroluminescent primitive combination in combination with the macro model library and establishing an electroluminescent primitive group model; constructing an initial full-parameterization integrated packaging model and setting engineering constraint conditions; light spatial spectrum distribution data are output, light color performance analysis is carried out based on the light spatial spectrum distribution data, and a final full-parameterized integrated packaging model is generated through a collaborative optimization mechanism; and carrying out electroluminescent element integrated packaging according to the integrated packaging engineering package. Through combination of parametric modeling, multi-physics field coupling simulation and a collaborative optimization mechanism, quantitative evaluation and dynamic optimization of light and color performance are realized, and the problems of uneven light and color distribution and insufficient multi-physics field collaboration in the prior art are solved.

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 present application relates to a display panel, an electronic device and a display panel manufacturing method. The display panel includes a planarization layer, a sub-anode layer, a pixel define layer, an electroluminescent layer and a cathode layer. The sub-anode layer is configured to control light emission conditions of sub-pixels, and is above the planarization layer. The sub-anode layer has a plurality of separate sub-anodes. The sub-anode has a via hole penetrating therethrough. In the above structure, water vapor can be evaporated outwards through via holes on the sub anodes, so as to avoid the water vapor from being blocked between the planarization layer and the sub anode layer, and further avoid the situation existing in the sub anode layer in which the water vapor rises upwards and forms a protrusion and / or an opening. With the above configuration, it is beneficial to ensure the display effect of the display panel.

The invention discloses a method for improving the electrode resistance uniformity of an AC electroluminescent device, and the preparation method of a complete ACEL device comprises the following steps: uniformly spraying a metal nanowire electrode material on the surface of a substrate to form a bottom electrode with uniform resistance and excellent conductivity; a bottom electrode is sequentially covered with a dielectric layer material and a light-emitting layer material through the screen printing technology, the surface of the light-emitting layer is further sprayed with a layer of metal nanowire electrode material to construct an upper electrode, finally, the upper electrode is covered with a packaging material through screen printing to protect a device, the whole process is simple in technology, high in repeatability and reliability, and the manufacturing cost is low. Wherein the surface roughness of the light-emitting layer affects the electrical performance of a metal nanowire electrode, the long-term stability of the electrode is reduced due to high roughness, and the service life of the electrode is further shortened, so that the surface roughness of the light-emitting layer is controlled by adjusting the solid content of the fluorescent powder in the light-emitting layer, which is very important for improving the performance and the stability of a device.

The invention relates to the technical field of electroluminescent photoelectric devices, in particular to a photoelectric device based on electro-circular polarization luminescence of a single chiral rare earth complex molecule and a preparation method of the photoelectric device. A spin Hall effect detection layer of the photoelectric device comprises a platinum film and a non-magnetic metal detection electrode; the non-magnetic metal detection electrode is arranged on the side edge of the platinum film in the length direction; the graphene point electrode is arranged on the side edge of the upper surface of the insulating layer in the width direction, the two ends of the molecular heterojunction are connected with the graphene point electrode through amido bonds to form a graphene point electrode-molecular heterojunction array, and the magnetic metal electrode is arranged on the outer side edge of the upper surface of the graphene point electrode in the width direction. According to the photoelectric device, the excellent photoelectric property of the rare earth complex is combined with the molecular electronics technology, the detection sensitivity of the photoelectric device on the single molecule level is improved, the preparation method is mild in reaction condition and easy to operate, and application and popularization of the photoelectric device are facilitated.

The invention relates to a matrix light source having a plurality of elementary light sources with electroluminescent semiconductor elements, and a common substrate in contact with an integrated circuit. The integrated circuit is configured to delay the illumination of the elementary sources for a pre-determined duration following receipt of an illumination command.

The invention discloses a power distribution network insulation defect detection method and system based on an electroluminescent composite material, and relates to the technical field of electrical equipment insulation detection.The method comprises the steps that an electroluminescent gradient doping coating material is prepared and sprayed to the surface of a pretreated detected insulating part; acquiring an electroluminescent signal of the detected insulating part and real-time data of environment temperature and humidity, and performing preprocessing, inputting the preprocessed electroluminescent signal into a pre-constructed light-electric field nonlinear mapping model, performing basic electric field inversion, and performing local correction on a three-combination-point area through a weight factor; global environment compensation is carried out through a pre-trained BP neural network, and a corrected electric field inversion result is obtained; and on the basis of a preset dimensionless electric field index dynamic threshold value, labeling coordinates of an abnormal region in a corrected electric field inversion result in real time, evaluating a defect risk level in combination with weighted D-S evidence, and realizing remote display and early warning of a thermodynamic diagram through a cloud protocol.

The invention relates to the technical field of preparation of organic photoelectric materials, in particular to an organic light-emitting device and a display or lighting device comprising the organic light-emitting device. A hole transport layer compound of the device is obtained by taking a phenyl and alkyl fixed substituted fluorenyl structure as a core fragment and taking a benzo five-membered ring and a limited substituted benzene ring as two side chains of amido, and is matched with a limiting material of a light-emitting auxiliary layer to manufacture an OLED (Organic Light Emitting Diode) element; the light-emitting efficiency and the working life of the organic light-emitting device are effectively improved, and the application prospect is very good.

A user support for motor vehicles includes a flexible cover having a flexible light comprising electroluminescent material that emits light when electrical power is supplied to the electroluminescent material. The user support may include a resilient porous lattice matrix formed by an additive process and may include electroluminescent material disposed on links of the lattice matrix.

The invention discloses a method for testing short-circuit current of a solar cell. The method comprises the following steps: acquiring a first corresponding relation between the photoluminescence intensity of a standard cell under standard illumination intensity and the electroluminescence intensity of the standard cell under open-circuit voltage; providing a battery piece to be tested; irradiating partial areas of the first surface of the to-be-measured battery piece through a plurality of light sources with different wavelengths, and measuring to obtain bright area luminous intensity of a light receiving area and dark area luminous intensity of a non-light receiving area under the irradiation of the light sources with different wavelengths; according to the first corresponding relation and the luminous intensity of each bright area, obtaining basic electroluminescence intensity corresponding to the luminous intensity of each bright area; obtaining the equivalent external quantum efficiency under the irradiation of each wavelength light source according to the basic electroluminescence intensity and the dark space luminescence intensity corresponding to each wavelength light source; constructing a wavelength-equivalent external quantum efficiency curve; carrying out integral calculation on the wavelength-equivalent external quantum efficiency curve to obtain short-circuit current density, and calculating the short-circuit current of the battery piece to be measured according to the area of the first surface.

The invention discloses a high-color-purity near ultraviolet heat exciton compound with circular polarization property and application thereof in preparation of a circular polarization organic electroluminescent device, and belongs to the technical field of organic photoelectric materials. The electroluminescent material disclosed by the invention is a high-color-purity near ultraviolet heat exciton compound with circular polarization property, and two pairs of near ultraviolet enantiomers are successfully designed and synthesized by combining a chiral group binaphthol, a weak donor dibenzothiophene, dibenzofuran and an acceptor cyanophenyl; the compounds show obvious circular polarization luminescence property and high fluorescence quantum yield. The electroluminescent devices prepared based on the enantiomers all show near ultraviolet emission, CIE coordinates are respectively (0.168, 0.040) and (0.166, 0.040), and the external quantum efficiencies are respectively 4.3% and 3.4%. According to the near ultraviolet heat exciton material, a new visual angle is provided for developing the near ultraviolet heat exciton material with circular polarization luminescence and high color purity at the same time, and 3D and wide color gamut display can be directly achieved in the future.

A vapor deposition system comprising an array of depositors in fluid communication with an ambient inert gas that are held in proximity to substrate carried on a heated conveyance such that the substrate and depositors move relative to each other during deposition. Here, each depositor has one or more delivery apertures that ejects a gas jet including a vapor precursor that chemically reacts with the substrate surface to form a single-molecule thick layer of electroluminescent compound on the substrate. Further, each depositor has one or more exhaust apertures that cumulatively withdraw a greater molar flow of gas than is cumulatively ejected by the delivery apertures in the same depositor.

The invention relates to the technical field of electroluminescent light sources, and provides a self-adaptive LED illumination regulation and control method based on multi-modal environment perception, which comprises the following steps: acquiring multi-modal environment perception data, user feedback data, blue light risk level and user physiological rhythm data; performing space-time alignment on the multi-modal environment sensing data and the user feedback data, performing data enhancement, and extracting a fusion feature vector in an enhanced data set; performing dynamic weighting on the fused feature vector, generating an initial illumination parameter in combination with the weighted feature vector and the user physiological rhythm data, and performing energy-saving optimization on the initial illumination parameter to obtain a target illumination parameter; mapping the target illumination parameter into a pulse width modulation parameter, and determining the phase delay of the micro-lens array according to the personnel distribution characteristics in the fusion characteristics; driving constant-current circuit data according to the pulse width modulation parameters, performing micro-lens beam deflection according to the phase delay of the micro-lens array, and adjusting the optical filter according to the blue light risk level.

The invention discloses a mixed A-site cation chiral perovskite diode and a preparation method thereof, and relates to the field of electroluminescent technology and manufacturing. The device mainly comprises a cathode, a light-emitting layer, an anode, an electron transport layer and a hole transport layer. A chiral factor is introduced into a traditional perovskite LED device in a mixed A-bit mode, and the LED device capable of directly emitting polarized light is prepared. Compared with an existing commercial CP-LED indirect polarized light emission mode, the efficiency can be better improved, the structure can be better simplified through a direct mode, the characteristic can still be kept after part of chiral cations are introduced, the luminous efficiency of the CP-LED is improved, the color purity is high, and the adjustable luminous wavelength can be achieved by adjusting and controlling the proportion of doped chiral cations.

The invention provides a high-flexibility stretchable transparent electrode and a preparation method and application thereof, and belongs to the technical field of flexible electrodes. The method comprises the following steps: spin-coating a metal nanowire dispersion liquid on the surface of a glass substrate to form a conductive film; spin-coating a polyrotaxane solution containing double bonds to form a PRA film; coating the elastomer precursor solution to form an elastic substrate; and after curing, stripping the elastic substrate from the glass substrate to prepare the high-flexibility stretchable transparent electrode. The method can be used for an electroluminescent device, a flexible touch screen and wearable flexible electronic equipment for detecting physiological electric signals of a human body. According to the invention, the metal nanowire is used as a conductive material, and isocyanate-modified polyrotaxane PRA is used as a cross-linking agent to be introduced into the nanowire and a transparent elastic substrate; when the electrode is stretched, cyclodextrin in the PRA can freely move on a polyethylene glycol long chain, and the stress concentration problem is effectively relieved, so that the fracture of the nanowire is reduced, the working range of the transparent electrode is widened, and the change rate of resistance is reduced.

The invention provides a light-emitting substrate, a lighting device and a display device, and relates to the technical field of display. The anode layer is arranged on one side of the substrate; the electroluminescent layer is arranged on one side, far away from the substrate, of the anode layer; the cathode layer is arranged on one side, far away from the substrate, of the electroluminescent layer; the first covering layer is arranged on one side, far away from the substrate, of the cathode layer; the second covering layer is arranged on one side, far away from the substrate, of the first covering layer; the refractive index of the second covering layer is greater than that of the first covering layer; the packaging structure layer comprises a first inorganic packaging layer and is arranged on one side, far away from the substrate, of the second covering layer; the first covering layer can improve the coupling efficiency between the light-emitting microcavity and the packaging structure layer, and the light-emitting efficiency of the light-emitting substrate is effectively improved.

The invention discloses a photovoltaic panel defect detection and classification method based on a thermal infrared image, and relates to the technical field of photovoltaic panel thermal infrared detection.The method comprises the steps that S1, a thermal infrared camera carried by an unmanned aerial vehicle is used for obtaining thermal infrared photos of a photovoltaic power station with the longitude, the latitude and the attitude angle; the unmanned aerial vehicle is used for carrying a thermal infrared camera to obtain pictures with longitude, latitude and attitude angle information, and photogrammetry software is combined to generate an image, so that the dependence of electroluminescence detection on special illumination and an external power supply is eliminated, detection work can be carried out in a conventional environment, a photovoltaic panel can be accurately positioned, and the detection efficiency is improved. The problem of difficult positioning caused by a large number of panels and repeated textures is solved, meanwhile, a deep learning algorithm is applied, multiple fault types can be accurately recognized, key information output of fault panels is integrated, detailed basis is provided for operation and maintenance personnel, maintenance work is effectively guided, the overall efficiency and accuracy of operation and maintenance of the photovoltaic power station are improved, and the working efficiency of the photovoltaic power station is improved. And safe and efficient operation of the photovoltaic power station is ensured.

A method for producing a semiconductor nanoparticle, a semiconductor nanoparticle, an electroluminescent device including the semiconductor nanoparticle, and a display device. In an embodiment, the method of an embodiment includes preparing a first semiconductor nanocrystal including zinc, tellurium, and selenium, wherein the preparing of the first semiconductor nanocrystal includes heating a first solution including a first zinc precursor, a first selenium precursor and a tellurium precursor in a first organic solvent at a reaction temperature to form a heated solution; and adding an additive to the heated first solution to produce the first semiconductor nanocrystal, wherein the additive includes a second selenium precursor and the additive does not include tellurium, and the semiconductor nanoparticle is configured to emit blue light.

The invention belongs to the field of novel display material quantum dot materials, and discloses a carbon dot with a dark blue light emission characteristic, and a preparation method and application thereof. The preparation method comprises the following steps: (1) weighing perylene and PTCDA or perylene and propylene diamine as reaction precursors according to a molar ratio of perylene to PTCDA / propylene diamine of (1-5): 1; (2) adding an ethanol-sulfuric acid solution or DMF (Dimethyl Formamide) into the reaction precursor, and carrying out solvothermal reaction in a hydrothermal reaction kettle; and (3) after the solvothermal reaction is completed, filtering, centrifuging and dialyzing the reaction solution, and finally drying to obtain the carbon dots. The carbon dot with the dark blue light emission characteristic is applied to a dark blue light electroluminescent diode. The carbon dots developed by the invention have a dark blue light emission characteristic (the emission peak value is less than or equal to 465 nm), can be applied to dark blue light-emitting diodes, have a wide application prospect, are simple in preparation process and low in cost, and are a convenient and environment-friendly method for synthesizing the carbon dots on a large scale.

The invention belongs to the technical field of computer vision detection, and discloses a light-weight and high-precision photovoltaic cell electroluminescent image defect detection model which is obtained through training by the following steps: accurately labeling photovoltaic cell electroluminescent defect images through labeling software to construct a high-quality data set; an RDS-YOLO detection model is constructed; and training an RDS-YOLO detection model by using sample data in the data set to obtain a detection model capable of accurately identifying defects according to the electroluminescent image of the photovoltaic cell. According to the method, the RECBConv module, the DySample module, the C2fCG module and the SCAMHead module are introduced, and the calculation complexity is remarkably reduced while high precision is ensured through the lightweight design, so that an efficient and reliable solution is provided for photovoltaic cell electroluminescent image defect detection.

The invention discloses a BC solar cell electroluminescence defect and power detection integrated system comprising a bearing mechanism used for fixing a BC solar cell; a PCB probe board on the probe module is electrically connected with a source meter, and the PCB probe board is used for being connected with a BC solar cell and forming a closed loop with the source meter; the system further comprises an infrared imaging unit, a lighting source and a central processing unit, and the central processing unit is used for switching an EL defect detection mode and an I-V detection mode and processing and analyzing EL images and I-V data. According to the BC solar cell electroluminescence defect and power detection integrated system, the multi-point elastic PCB probe board suitable for the BC solar cell is designed, and EL defect detection and I-V detection (test) functions are integrated on the same probe-source table hardware system, so that the two discrete functions are integrated into one system; the detection efficiency is improved; and the hardware cost is reduced.

This disclosure relates to magnetic microgel beads, and in particular to magnetic microgel beads for biofunctionalization and methods of making and uses thereof, for example, in biosensing assays. In an embodiment, a magnetic microparticle comprising a magnetic nanoparticle encapsulated by a polymer hydrogel. In another embodiment, an assay for detecting the presence of a target analyte in a sample comprising a) the magnetic microparticle disclosed herein, wherein the biorecognition agent further comprises a reporter moiety; b) an electrochemical chip comprising a working electrode, a counter electrode and a reference electrode; and c) a capture probe functionalized on the working electrode; wherein binding of the biorecognition agent to the target analyte results in production of an electrochemical, electroluminescent or photoelectrochemical signal.

The application belongs to the technical field of intelligent electronic devices, and particularly relates to a high-color-purity multi-color electroluminescent fiber and a preparation method and application thereof. The fiber is prepared by the following steps: preparing lead halide perovskite type nano quantum dots as light conversion particles by a hot injection method, a room temperature supersaturation recrystallization method and the like; grafting and modifying the lead halide perovskite type nano quantum dots on the surface of metal sulfide type electroluminescent particles through a surface ligand to obtain high-color-purity multi-color electroluminescent active material; compounding the light conversion particle modified electroluminescent active material and a transparent thermoplastic elastomer polymer to obtain active slurry, and coating the active slurry on the surface of a conductive fiber through a continuous limited coating process; loading an external electrode on the conductive fiber to obtain the high-color-purity multi-color electroluminescent fiber. The multi-color electroluminescent fiber prepared by the application has various colors and high color purity, and meets the color gamut range required by the luminescent fiber and display fabric.

The invention discloses a photovoltaic cell panel invisible defect detection device based on multispectral imaging. The photovoltaic cell panel invisible defect detection device comprises a photovoltaic cell panel to be detected; the excitation module is configured to enable the photovoltaic cell panel to be detected to generate a short-wave infrared band under the irradiation of an excitation light source; the excitation light source comprises a near-infrared light-induced excitation light source and / or an electroluminescent driving power supply; the spectrum acquisition module comprises a multispectral imaging system composed of a variable optical filter and an area-array camera, the variable optical filter adopts a wavelength programmable narrow-band filtering assembly, and the transmission wavelength of the variable optical filter covers a 1050-1250 nm characteristic spectrum band; and the image acquisition and processing system is configured to control switching of spectrum channels of the variable optical filter, control the area-array camera to shoot multispectral images in sequence and process the images. The device overcomes the adverse effect of the sunlight environment on photoluminescence imaging or electroluminescence imaging of the photovoltaic cell panel, so that the imaging level of invisible defects of the photovoltaic cell panel is improved.