1118 results about "Phosphorescence" patented technology

The invention discloses a high-temperature airflow two-dimensional temperature field and velocity field synchronous measurement system and method based on laser-induced phosphorescence, and the system comprises phosphorescence particles, a low-frequency double-pulse laser, an image collection device, a synchronous controller, and an image processing device. The image processing device analyzes the gray intensity ratio of different wave band images acquired by the two PIV cameras at the same time, and combines a temperature response function calibrated by an experiment to realize inversion of a temperature field; meanwhile, a double-frame time-resolved image acquired by any PIV camera is subjected to cross-correlation calculation, particle displacement is extracted, and then a velocity field is reconstructed. According to the invention, synchronous acquisition of temperature and speed based on the same data source is realized, and the system has the remarkable advantages of simple structure, high measurement precision and wide application environment.

The disclosure relates to a light-emitting device including a first electrode, a second electrode facing the first electrode, and an interlayer disposed between the first electrode and the second electrode and including an emission layer. The interlayer includes a first compound represented by Formula 1 of the specification, a second compound represented by Formula 2 of the specification, and a third compound, which is a blue phosphorescent compound. The disclosure also relates to an electronic apparatus including the light-emitting device.

The invention relates to the technical field of polymer room-temperature phosphorescent materials, in particular to a self-repairing room-temperature phosphorescent elastomer based on waterborne polyurethane and a preparation method and application thereof, and the specific preparation steps include: 1) synthesis of self-repairing waterborne polyurethane and 2) preparation of a self-repairing room-temperature phosphorescent waterborne polyurethane elastomer material. A self-repairing waterborne polyurethane elastomer material is taken as a polymer matrix for constructing a rigid network, and is combined with various micromolecular organic light-emitting units through physical doping, so that the self-repairing room-temperature phosphorescent waterborne polyurethane elastomer material with strong self-healing capability, excellent optical performance and good mechanical tensile property is obtained.

The invention discloses a long-life phosphorescent sulfur quantum dot, a multicolor long-life phosphorescent sulfur quantum dot composition and a preparation method and application thereof, and belongs to the technical field of phosphorescent materials and information encryption. The preparation method comprises the following steps: carrying out solvothermal reaction on a sulfur source and ethylenediamine to obtain sulfur quantum dots, and adding a sulfur quantum dot aqueous solution into a boric acid matrix to react to prepare long-life phosphorescent sulfur quantum dots (SQDs-MA); the long-life phosphorescent sulfur quantum dots and a rhodamine B aqueous solution are blended and dried to prepare the multicolor long-life phosphorescent sulfur quantum dot composition (RhB / SQDs-MA). When excited by ultraviolet light, the SQDs-MA shows a wide absorption range of 200 to 700 nm. When excitation is carried out at 362 nm, the SQDs-MA shows a blue fluorescence emission peak at 436 nm. The SQDs-MA powder emits bright green phosphorescence after the irradiation of an ultraviolet lamp is turned off, and under the optimal excitation of 373 nm, the maximum phosphorescence emission value is displayed at 526 nm. Under the irradiation of ultraviolet light, the RhB / SQDs-MA can emit yellow, orange and red phosphorescence at the wavelength of 584 nm, 600 nm and 620 nm.

A phosphor plate including: a complex containing an α-sialon phosphor and a sintered body containing spinel represented by a general formula M2xAl4-4xO6-4x (where M represents at least one of Mg, Mn, and Zn, and 0.2<x<0.6). In addition, there is provided a light emitting device including: a group III nitride semiconductor light emitting element; and the phosphor plate provided on one surface of the group III nitride semiconductor light emitting element. Further, there is provided a method for manufacturing the phosphor plate.

The invention relates to a long-life room-temperature phosphorescent material and a preparation method and application thereof.According to the phosphorescent material, epoxy resin is doped with an epoxy prepolymer containing a fluorine-containing chain segment to serve as a host matrix, F-pi and pi-pi non-covalent synergistic interaction is formed between the host matrix and aromatic fluorescent guest molecules, the energy level difference of the excited state is adjusted, and the phosphorescent material is obtained. Intersystem crossing (ISC) and radiative transition rates are optimized, so that the phosphorescence lifetime and environmental adaptability are improved; a fluorine-containing chain segment introduced into a polymer system can be enriched on the surface of a material to form a needle-shaped structure, so that the surface energy of the material is remarkably reduced, the antifouling property is excellent, and additional functions of lyophobicity, transparency, chemical stability and the like are also realized while ultra-long room-temperature phosphorescence is realized; and cooperative enhancement and multifunctional integration of optical performance and surface performance are realized.

The invention belongs to the technical field of organic electroluminescent materials, and provides an iridium-containing heterocyclic phosphorescent doping material and an organic electroluminescent device.The doping material has a compound general formula shown in the formula I. Quinoline and a naphthalene ring are connected through silane or germane, and a silicon or germanium six-membered heterocyclic structure is formed. And reacting with iridium metal and a diketone monomer to obtain the iridium metal heterocyclic phosphorescent organic light-emitting material. The heteroatom silicon or germanium in the material can adjust molecular orbital HOMO and LUMO energy levels, and the polarity effect of heteroatoms promotes electron migration, reduces interface potential barriers and electron injection barriers, reduces carrier injection loss and improves carrier mobility, so that driving voltage is reduced, and the external quantum efficiency of a device is improved. In addition, the silicon or germanium heterocyclic ring has better rigidity, so that the overall stability of the structure is enhanced, and the rigid structure can prolong the service life of the device.

The invention discloses a laser-phosphorescence coupling type optical path system for a two-dimensional phosphorescence temperature measurement optical fiber probe, and relates to the field of non-contact solid surface temperature measurement, and the laser-phosphorescence coupling type optical path system is characterized in that an object to be measured is coated with a phosphorescence material coating; the laser light source generates laser capable of exciting the phosphorescent material coating; the laser transmission module is located on a light path of laser emitted by the laser light source; the light splitting module is positioned on a laser emergent light path of the laser transmission module and is also positioned on a phosphorescence emergent light path of the coupling transmission module; the coupling transmission module is positioned on a laser emergent light path which is turned back by the light splitting module and is also positioned on a phosphorescence emergent light path of the object to be measured; the image decomposition module is located on a phosphorescence emergent light path of the light splitting module; the image receiving module is located on a phosphorescence emergent light path of the image decomposition module. On the basis of realizing two-dimensional phosphorescence image acquisition, the laser and phosphorescence transmission efficiency is improved, the size of the probe is reduced, and the problem of high-efficiency transmission of two-dimensional phosphorescence signals in a narrow space is solved.

An object of one embodiment of the present invention is to provide a multicolor light-emitting element that utilizes fluorescence and phosphorescence and is advantageous for practical application. The light-emitting element has a stacked-layer structure of a first light-emitting layer containing a host material and a fluorescent substance, a separation layer containing a substance having a hole-transport property and a substance having an electron-transport property, and a second light-emitting layer containing two kinds of organic compounds that form an exciplex and a substance that can convert triplet excitation energy into luminescence. Note that a light-emitting element in which light emitted from the first light-emitting layer has an emission spectrum peak on the shorter wavelength side than an emission spectrum peak of the second light-emitting layer is more effective.

The invention provides a cholesteric liquid crystal elastomer-based circular polarization room-temperature phosphorescence dynamic regulation and control method, which belongs to the technical field of optical materials, and comprises the following steps: 1, dissolving a liquid crystal monomer, a chiral agent, a cross-linking agent, a chain extender, a photoinitiator, a catalyst and a room-temperature phosphorescence polymer in a solvent dichloromethane to obtain a liquid crystal polymer solution; evaporating the solvent to obtain a red cholesteric liquid crystal elastomer room-temperature phosphorescent oligomer; 2, carrying out ultraviolet light polymerization on the cholesteric liquid crystal elastomer room temperature phosphorescent oligomer at room temperature to obtain a CLCE-RTP film; and step 3, regulating and controlling the circular polarization phosphorescence asymmetry factor by controlling the tensile deformation degree of the CLCE-RTP thin film. According to the invention, P1, P2 or P3 is doped with the cholesteric liquid crystal elastomer, so that the dynamic reversible regulation of the circular polarization room temperature phosphorescence asymmetry factor between 0.8 and 0.15 is realized.

The invention provides a protonated product of a pyridine derivative, a compound of the protonated product, a preparation method and application, and belongs to the technical field of photoelectric materials. Phosphorescence enhancement is realized through protonation of pyridine and derivatives thereof, the protonation product of pyridine and derivatives thereof is further doped with a polymer to prepare a phosphorescent compound film, and the polymer and the protonation product of pyridine and derivatives thereof are utilized to form a hydrogen bond, so that the phosphorescent compound film is obtained. A rigid structure formed through hydrogen-bond interaction limits the non-radiative relaxation of the compound and improves the room-temperature phosphorescence performance. The preparation method is simple, the raw materials are easy to obtain, low in cost and environmentally friendly, and the prepared phosphorescent compound has excellent phosphorescent performance, has the foldable cutting characteristic and can be applied to the aspects of flexible display, colorful phosphorescent object construction, information encryption, anti-counterfeiting and the like.

The invention belongs to the technical field of organic photoelectric materials, and discloses a phosphorescent host material, a preparation method and an organic electroluminescent device.The phosphorescent host material compound is subjected to carbazolyl and triazine group substitution at the first position and the second position of a dibenzoheterocycle, and a phenyl mother nucleus structure is introduced to the substituted same-side aromatic ring of the dibenzoheterocycle, so that the phosphorescent host material is obtained. Structural molecules conforming to the general formula (1) or the general formula (2) are low in symmetry, relatively high in structural rigidity and large in steric hindrance, so that the triplet state energy can be improved, the phenomenon of energy return can be avoided, and meanwhile, the energy loss in the molecules can be reduced, so that the overall performance of the device is more excellent; in addition, the structure conforming to the general formula is more beneficial to charge transfer, so that the driving voltage is reduced, and the luminous efficiency is enhanced.

The invention relates to a fluid temperature and velocity co-measurement method and system based on iterative optimization phosphorescent particle tracking. The method comprises the following steps: dispersing phosphorescent tracer particles in fluid, and carrying out preprocessing operation on an acquired image to obtain a particle phosphorescent signal image; and deeply analyzing the processed image based on a spherical particle light spot integral discretization light intensity function, and determining the position of the tracer particle and phosphorescence intensity information. Meanwhile, the cross-frame matching technology is used for tracking the particles, and a particle motion trail and a phosphorescence intensity attenuation curve are obtained. And calculating the speed of each particle according to the particle motion trail, and processing the phosphorescence intensity attenuation curve according to the temperature response characteristic of the phosphorescence lifetime to obtain the temperature of each particle. And finally, performing post-processing on the speed and temperature data of each particle to realize synchronous measurement of the speed and temperature of the fluid so as to obtain fluid speed-temperature field data. High-precision measurement can be realized in a large-scale unsteady flow field, and a fluid flow and heat transfer coupling mechanism can be deeply explored in an assisted manner.

The invention provides a speed field and temperature field synchronous measurement method based on temperature-sensitive phosphorescent particles, and relates to the technical field of flow field observation.The method comprises the steps that the service life of the temperature-sensitive phosphorescent particles is measured, and a service life-temperature curve is obtained; obtaining a time sequence image of the temperature-sensitive phosphorescent particles; performing three-view separation processing on the time sequence image to obtain a processed image; performing three-dimensional reconstruction and trajectory fitting operation on the processed image to obtain a three-dimensional velocity field; acquiring a red total-resolution image of the temperature-sensitive phosphorescent particles irradiated by the light source; calculating the temperature-sensitive phosphorescent particle intensity of the red full-resolution image, and obtaining the self-luminous lifetime through the temperature-sensitive phosphorescent particle intensity; a three-dimensional temperature field is obtained through the service life-temperature curve and the self-luminous service life; and fusing the three-dimensional velocity field and the three-dimensional temperature field to obtain a three-dimensional velocity-temperature field. According to the method, the stability of reconstructing the three-dimensional velocity field and the precision of temperature measurement are improved through the three-color mask single-color camera and the service life method of the temperature-sensitive phosphorescent particles.

The application discloses a kind of full-color organic ion gel based on anion-induced phase separation strategy of high ionic conductivity, stretchability and long phosphorescence lifetime and application thereof, which comprises: introducing anions in a polymer ion solution containing a large number of hydroxyl groups, inducing molecular chain rearrangement by freeze-thaw and low-temperature drying, and constructing an ion liquid enrichment zone and a polymer enrichment zone, wherein the highly solvated ion liquid enrichment zone is a soft phase, which bears elastic deformation and ion transport function, and the polymer enrichment zone is a hard phase, which bears mechanical load and induces phosphorescence emission.The application solves the problems of poor mechanical properties, non-stretchability and short phosphorescence lifetime of existing phosphorescent materials, and synergistically improves the mechanical properties and phosphorescent properties of ion gel.The prepared ion gel has excellent environmental tolerance, recyclability and responsiveness;using its multicolor phosphorescent display and responsive electrical signals, it can be used to construct soft robots and information encryption devices with dual-channel information interaction.

The invention relates to a silicon-based OLED assembly and a manufacturing method thereof. The manufacturing method of the silicon-based OLED assembly comprises the following steps: providing a substrate; forming a plurality of metal anode units spaced by a preset distance on the substrate and pixel isolation layers located between the adjacent metal anode units; evaporating a blue phosphorescent layer on the substrate; wherein the blue phosphorescent layer covers the metal anode unit and the pixel isolation layer; sputtering a transparent cathode layer on the blue phosphor layer; depositing a first inorganic film packaging layer on the transparent cathode layer; forming a quantum dot color conversion layer on the first inorganic film encapsulation layer, wherein the quantum dot color conversion layer does not comprise a blue color conversion layer; compared with a white light OLED, the blue phosphorescent layer is used for emitting light, so that the OLED is simpler in structure, thinner in film layer and higher in light emitting efficiency; in addition, a traditional blue color green light film is removed from the quantum dot color conversion layer, and blue light brightness attenuation and luminous efficiency loss caused by the fact that a light source penetrates through a color filter film are avoided.

The invention relates to the technical field of aeroengine turbine blade thermodynamic performance testing, in particular to a two-dimensional multi-mode turbine blade heat-flow double-field synchronous testing method and system.The method comprises the steps that phosphorescent particles are evenly scattered in an experimental flow field of a target turbine blade, and after the phosphorescent particles are excited through double lasers, the target turbine blade is subjected to heat-flow double-field synchronous testing; collecting a flow field image; inverting a temperature field by using a phosphorescence intensity ratio method based on the flow field image, and calculating a velocity field through an improved PIV algorithm; and after time-space registration is carried out on the temperature field data and the velocity field data, fusion is carried out to generate a composite heat-flow field, dynamic coupling characteristics are analyzed through a vortex center tracking algorithm, and the heat-flow double-field synchronous test of the target turbine blade is completed. Through ultraviolet / PIV dual-laser excitation, multispectral separation acquisition and high-precision data fusion, time-space synchronous measurement of the temperature field and the velocity field of the boundary layer of the turbine blade is realized.

Disclosed is a mixture, comprising: at least one first compound H1 represented by formula (I) and at least one second compound H2, the second compound H2 being preferentially selected from bicarbazole derivatives. An organic compound or mixture of the present invention, when used as a phosphorescent light-emitting host material, can improve the efficiency of devices and the service life of devices. In particular, an organic mixture can strike a good balance between electron holes and electron transport speed, and achieve low efficiency roll-off and a long service life of OLED devices at high brightness. Moreover, the material provided by the invention has a relatively simple synthesis process and is low cost, so that the material has huge application potential and application range. The invention further relates to a composition and an organic electronic device, and in particular relates to an organic electroluminescent device.

The invention discloses a method and a device for measuring the proportional oxygen concentration of a wood-based composite oxygen sensing material, and relates to the field of oxygen measurement. The technical problems that how to utilize wood to be compounded with metalloporphyrin, overcome the influence of excitation light source power on a test result and improve the anti-interference capability and stability of a sensor and the oxygen concentration test range in the prior art are solved. According to the invention, balsa wood is taken as a wood-based material, and metalloporphyrin Gd-HMME is embedded into the balsa wood, so that under the excitation of an ultraviolet laser, the ratio of a fluorescence signal to a phosphorescence signal of the wood-based composite material is taken as an optical parameter, and the oxygen concentration test is realized. The method is also suitable for the field of sensor preparation.

Provided in the present application are an organic light-emitting diode and a display apparatus. The organic light-emitting diode includes at least one light-emitting layer, which includes at least one phosphorescence sensitized light-emitting layer, wherein the phosphorescence sensitized light-emitting layer includes a host material, a phosphorescent sensitizer and a narrow-spectrum fluorescent material, and the full width at half maximum of the narrow-spectrum fluorescent material is less than 50 nm. The present application can improve the performance, such as the efficiency, of an organic light-emitting diode.

The invention discloses a self-classification driven supramolecular dimer as well as a preparation method and application thereof. According to the supermolecule composite material, cucurbit [8] uril serves as a subject, a phenylpyridinium derivative G serves as an object, and a small-size supermolecule dimer with red / near-infrared delayed emission is formed through subject-object inclusion interaction and a self-classification strategy. The supramolecular dimer structure inhibits distorted intramolecular charge transfer (TICT) and promotes space charge transfer (TSCT), enabling red thermally activated delayed fluorescence (in some embodiments, 620 nm) and near infrared phosphorescence (in some embodiments, 740 nm) of simple organic small molecules. The proposed synergistic supramolecular strategy provides a new way for realizing simple red / near-infrared delayed emission of small organic molecules in a water phase, and has potential application value in the fields of biological materials and the like.

A dual-band phosphor-converted light emitting diode (PC-LED) is provided. The dual-band PC-LED includes a blue LED configured to generate blue light, a first phosphor-based light filter configured to output visible light based on the blue light; and a second phosphor-based light filter configured to output near-infrared light based on the visible light.

The invention relates to a transparent phosphorescence-containing cured flame-retardant coating as well as a preparation method and application thereof. The transparent phosphorescence-containing cured flame-retardant coating comprises the following components: phosphorus-containing polyurethane acrylate, polyurethane acrylate, a double-bond-containing polyurethane organosilicon prepolymer, a nitrogen-containing acrylic monomer, a phosphorus-based flame retardant A, a phosphorus-based flame retardant B, silica sol, a reactive diluent B, a silane coupling agent and other auxiliaries. The coating disclosed by the invention has adhesive force, flame retardance and weather resistance, and can be directly cured on a light flexible photovoltaic module panel and a back plate through UV to achieve transparent, fireproof, flame-retardant and weather-resistant effects.

The invention provides an organic circularly-polarized room-temperature phosphorescent material and application thereof. The chiral phosphorescent material with a D-A structure is formed by taking axial chiral binaphthalene as a chiral donor unit (D) and introducing a proper potential phosphorescent acceptor unit (A) into the chiral donor unit (D). On one hand, binaphthalene serving as a chiral donor unit has large steric hindrance, large torsion of molecules is facilitated to reduce the aggregation quenching effect of the molecules, an intersystem crossing process is activated to realize room-temperature phosphorescence emission, and the radiation efficiency of triplet excitons is improved; on the other hand, a rigid eight-membered ring formed by axial chiral binaphthalene and a phosphorescent unit can enable the chiral organic light-emitting material to have a circularly polarized light-emitting property, and an eight-membered ring lock can ensure the stability of chirality and inhibit a racemization process.

A LED filament (2,20) configured to provide LED filament light. The LED filament comprising an elongated carrier (7) extending in a lengthwise direction, said elongated carrier comprising a first major surface (7a). The LED filament further comprises a plurality of LEDs (8) arranged on said first major surface and configured to emit LED light, a first layer (9) free from a luminescent material encapsulating or covering said plurality of LEDs and at least partly encapsulating or covering said first major surface, said first elongated translucent layer having a width, W1, transverse to said lengthwise direction, and a second layer (10) comprising a luminescent material configured to partly convert said LED light, the second layer is arranged on an outer surface (9a) of said first layer, such that the second layer is contained within the width, W1, of the first layer.

An inventive luminescent material suitable for use as a phosphor for an LED includes a nitridophosphate material having a general formula AEy-xLi10-2yP4N10:Eux, wherein (i) AE includes one or more of Ca, Sr, or Ba, and (ii) y≥x>0. In some instances, y can equal 2 and x can be between 0 and 0.1. In some instances, AE can include only Ca; in some other instances, AE can include a majority amount of Ca and lesser amounts of Sr or Ba. In some instances, the luminescent material can exhibit a peak emission wavelength greater than 600 nm.

The invention discloses a preparation method of carbon dots for double-channel detection of pesticide carbendazim, which comprises the following steps: mixing a carbon source with acid water or aqueous alkali for reaction to obtain fluorescent carbon dots; and mixing the fluorescent carbon dots with a matrix for reaction to obtain the room-temperature phosphorescent carbon dots. The invention also discloses an application of the room-temperature phosphorescent carbon dot in two-channel detection of pesticide carbendazim. The room-temperature phosphorescent carbon dots prepared by the invention can interact with carbendazim in the presence of carbendazim, so that the distance between the room-temperature phosphorescent carbon dots and the carbendazim is short, and energy transfer or electron transfer between molecules can occur. The fluorescence intensity, the fluorescence wavelength, the phosphorescence intensity, the phosphorescence wavelength and the phosphorescence service life of the room-temperature phosphorescence carbon dots are changed, and the purpose of quantitatively detecting carbendazim through fluorescence and phosphorescence double channels is achieved. According to the method, the fluorescence and phosphorescence dual-channel sensing technology is used for ultrasensitively detecting the residual content of carbendazim in food and water environment for the first time, and compared with a traditional carbendazim detection method, the method has the advantages that the visualization effect is good, the accuracy and sensitivity are high, and the selectivity is good. And the requirements of batch preparation in industrial production are met, so that the method is extremely easy to practically popularize and apply.

A source of light energy such as a source of violet light energy is coupled to a structure configured to contact the eye. The light source and structure are arranged to provide therapeutic amounts of violet light energy to the eye in order to inhibit the progression of refractive error such as myopia. The light source can be configured in many ways and may comprise a radioisotope and a phosphorescent material. The structure configured to contact the eye may comprise a contact lens or an implant.

The invention belongs to the technical field of light-emitting devices, and particularly relates to a perovskite light-emitting device and a preparation method and application thereof. The perovskite light-emitting device comprises a substrate, an anode, a hole transport-phosphorescence sensitization layer, a perovskite light-emitting layer, a phosphorescence ultrathin layer, an electron transport layer, an electron injection layer and a cathode which are stacked in sequence. According to the perovskite light-emitting device, the hole transport-phosphorescence sensitization layer and the phosphorescence ultra-thin layer are combined, efficient charge transport and energy transfer are achieved by reasonably regulating and controlling the concentration of a doped material in the sensitization layer and the thickness of the ultra-thin layer, and the performance of the perovskite light-emitting device is remarkably improved; according to the structural design, the synergistic effect of the sensitization layer and the ultrathin layer is fully utilized, and a new thought is provided for development of an efficient perovskite light-emitting device.

The invention provides a light generating system (1000) comprising (i) a plurality of light sources (110,120, . . .), (ii) a first luminescent material (210), and (iii) a second luminescent material (220), wherein: (a) a first light source (110) is configured to generate first light source light (111) having one or more wavelengths in the blue wavelength range and having a first centroid wavelength (λC1), wherein the first light source (110) is a laser; (b) the first luminescent material (210) is configured to convert at least part of the first light source light (111) into first luminescent material light (211) having one or more wavelengths in the green and / or yellow wavelength range; (c) a second light source (120) is configured to generate second light source light (121) having one or more wavelengths in the yellow and / or orange wavelength range and having a second centroid wavelength (λC2), wherein λC2>λC1; wherein the second light source (120) is a superluminescent diode; (d) the second luminescent material (220) is configured to convert at least part of the second light source light (121) into second luminescent material light (221) having one or more wavelengths in the orange and / or red wavelength range; and (e) in an operational mode the light generating system (1000) is configured to generate system light (1001) comprising the first luminescent material light (211) and the second luminescent material light (221).