35results about How to "High color rendering index" patented technology

The invention provides a europium ion doped titanate compound as well as a preparation method and application thereof, and relates to the technical field of rare earth luminescent materials. The chemical formula of the titanate compound provided by the invention is K2Ti6O13: xEu < 3 + >, the titanate compound is in a monoclinic system. A proper amount of Eu < 3 + > ions are doped in K2Ti6O13, so that the prepared rare earth fluorescent powder has higher color rendering index and quantum yield, and the luminescent property of a white light LED can be greatly improved; as K2Ti6O13 has good electrochemical performance and relatively high conductivity, the rare earth fluorescent powder provided by the invention can also be used in the fields of illumination, display, photocatalysis and energy storage. And on the other hand, the preparation method provided by the invention is simple in process, mild in condition, convenient for large-scale production and wide in development and application space.

The invention relates to zirconium silicate fluorescent powder capable of being excited by purple light to emit red light and a preparation method and application of the zirconium silicate fluorescent powder. The prepared fluorescent powder has excellent purple light excitation luminescence performance, can be excited by purple light of 380-450 nm to achieve excellent red light emission, has high thermal stability, high temperature resistance and high humidity resistance, and is suitable for the field of full-spectrum green illumination.

The invention discloses a high-color-rendering-index and high-thermal-conductivity composite fluorescent ceramic for solid-state illumination and a preparation method thereof. The composition of the composite fluorescent ceramic is xLu2.94 Al5O12: 0.02 Ce < 3 + >-K1. 98SiF6: 0.02 Mn < 4 + >, x refers to the mass fraction of LuAG in KSF, and x is greater than or equal to 1wt% and less than or equal to 10wt%. The preparation method comprises the following steps: preparing Lu2.94 Al5O12: 0.02 Ce < 3 + > green fluorescent powder by adopting a solid-phase reaction method, preparing K1. 98SiF6: 0.02 Mn < 4 + > nanoscale fluoride powder by adopting a hydrothermal synthesis method, respectively weighing the two kinds of fluorescent powder according to a chemical formula xLu2.94 Al5O12: 0.02 Ce < 3 + >-K1. 98SiF6: 0.02 Mn < 4 + >, loading into a graphite mold, carrying out vacuum sintering, carrying out air annealing, and then carrying out double-sided polishing to obtain the composite fluorescent ceramic. The color rendering index of the ceramic is obviously improved and reaches up to 90 or above under the excitation of a blue light LED chip with the wavelength of 450 nm. By adding LuAG, the heat conductivity and luminous efficiency of the KSF can be effectively improved, and meanwhile, the method is easy to realize industrial production.

The invention discloses a white light emitting layer material and a white light organic electroluminescent device, and belongs to the technical field of organic electroluminescent devices. The white light emitting layer material is composed of a red light emitting layer, a green light emitting layer and a blue light emitting layer in sequence or composed of a yellow light emitting layer and a blue light emitting layer in sequence. The red light-emitting layer is composed of a TADF host material and a red phosphorescent light-emitting material; the green light-emitting layer is composed of a TADF host material and a green phosphorescent light-emitting material; the blue light-emitting layer is composed of a host material containing phosphorus-oxygen double bonds and a blue TADF light-emitting material; the yellow light-emitting layer is composed of a TADF host material and a yellow phosphorescent light-emitting material. The white light emitting layer material has spectrum coverage with the emission wavelength of 400-780 nm, and when the white light emitting layer material is applied to a white light organic electroluminescent device, the device has the advantages of low turn-on voltage, low color temperature, low efficiency roll-off, high efficiency, high color rendering index and excellent color stability.

The utility model provides a laser flash lamp comprising a housing member, the housing member comprises a first housing and a second housing, and the second housing is rotatably connected to the first housing; the circuit board is electrically connected with the driving power supply, and the driving power supply is electrically connected with the red laser source, the green laser source and the blue laser source. The driving power supply adjusts the three light sources in the laser module into different light emitting powers, and adjusts the brightness ratio of the colors of the light sources to combine and generate different flash color temperatures; the driving power supply controls energization of one of the three light sources in the laser module or controls energization of two of the three light sources or controls energization of three of the three light sources in the laser module, and the laser module can be controlled to generate monochromatic light or double-color fusion light or three-color fusion light to generate different flash colors; the current provided by the driving power supply to the three light sources in the laser module is increased or decreased to the same value at the same time, and the brightness of the light generated by fusion of the laser module can be controlled and adjusted; and the second shell is pulled to rotate on the first shell, so that the flash angle is adjusted.

The invention discloses double-perovskite tungstate red fluorescent powder as well as a preparation method and application thereof, and relates to the field of red fluorescent powder. The chemical formula of the red fluorescent powder is NaGd (MagZnz) 1-2xZrxWO6: Eu < 3 + >, and x is more than 0 and less than 0.5. According to the invention, NaGd (MgZn) WO6 is taken as a matrix material, Zr < 4 + > is introduced for doping, and the NaGd (MgZnz) 1-2x ZrxWO6: Eu < 3 + > double perovskite red fluorescent material with excellent thermal stability is obtained.

This utility model relates to the field of lighting display technology, and more particularly to a stage lighting system. The stage lighting system includes: a stage light and a driving structure; the stage light includes a light source, a reflector, a color temperature mixing component, and an imaging component; the driving structure is mechanically connected to the color temperature mixing component; the reflector, color temperature mixing component, and imaging component are arranged sequentially along the light path transmission direction of the light source; the color temperature mixing component includes a first filter, a second filter, a third filter, and a color temperature adjustment filter, which are arranged in a staggered manner along the light path transmission direction; two filter halves of each filter are arranged opposite each other on both sides of the light path transmission direction; two color temperature adjustment halves of the color temperature adjustment filter are also arranged opposite each other on both sides of the light path transmission direction. This utility model's technical solution can achieve a color rendering index (CRI) of over 70 for stage lights under low color temperature and low brightness conditions.

The present invention discloses a high color rendering index PoCs phosphor and a preparation method and application thereof. The phosphor is composed of Y3Al5O 12 The YAG (YAG) matrix fluorescent ceramic is the substrate, and the substrate is coated with red fluorescent powder or green fluorescent powder. The present invention coats the fluorescent ceramic substrate with fluorescent powder (such as fluorescent red powder or fluorescent green powder), thereby avoiding the problems of direct blue light and low utilization rate caused by excessively high transmittance of the fluorescent ceramic, and reflects the blue light that directly penetrates the fluorescent ceramic back to the fluorescent ceramic, and is excited again by the activated ions, thereby improving the utilization efficiency of the blue light.

The invention discloses a reflection mode fluorescence conversion white light source for communication and illumination, and belongs to the field of visible light communication and solid-state illumination. The divergence angle, the modulation bandwidth, the color rendering index, the angle color uniformity and the thermal stability of the white light source are remarkably improved, and the overall performance of a visible light communication and solid-state lighting system is enhanced. The specific implementation method comprises the following steps: 1, adjusting parameters such as fluorescence conversion material concentration and glass cavity thickness according to light source performance requirements; the cesium lead bromide and the cadmium selenide / zinc sulfide are respectively excited by 450nm laser to radiate 521nm light and 632nm light. And 2, fixing the fluorescence conversion material on the reflecting surface of the reflecting mirror so as to improve the transmitting power of the light source. Backward radiated 521nm and 632nm light and unconverted residual 450nm light are reflected by the reflecting mirror and are combined with forward radiated light to generate a white light beam. Thirdly, a radiator is assembled on the back face of the reflector, and the thermal stability of the system is improved. The method is not only suitable for the fields of visible light communication and solid-state illumination, but also provides important technical support for various related applications such as intelligent illumination and indoor wireless communication.

The embodiment of the utility model provides a light source module and a lighting device, the light source module comprises a red LED light source, a green LED light source, a blue LED light source and a cyan LED light source, the red LED light source is used for emitting red light with the dominant wavelength ranging from 610 nm to 650 nm; the green LED light source is used for emitting green light with the dominant wavelength ranging from 510 nm to 540 nm. The blue LED light source is used for emitting blue light with the dominant wavelength ranging from 440 nm to 470 nm. The blue-green LED light source is used for emitting blue-green light with the peak wavelength ranging from 490 nm to 532 nm, and the radiation intensity of the blue-green light at 480 nm and the radiation intensity of the blue-green light at 550 nm are both larger than or equal to 0.5 times of the radiation intensity of the peak wavelength of the blue-green light. Thus, the cyan LED light source not only helps to improve the utilization efficiency of light energy of the light source module, but also helps to expand the spectral range of the light source module and improve the color rendering index, thereby enhancing the authenticity and accuracy of color rendition, and helping to meet the requirement of professional fields for high color fidelity.

The invention relates to the field of organic light-emitting materials, and discloses a color conversion composition, a blue light-driven LED and a preparation method thereof, organic boron heteropolycyclic aromatic hydrocarbon organic light-emitting materials (BODIPY and BN) in the color conversion composition are utilized, the molar extinction coefficient is large, the emission spectrum half-peak width is very narrow (10-50 nm), the quantum yield is high, and the thermal stability and chemical stability are good. Compared with the prior art, the color conversion film provided by the invention has the characteristics of simple structure and diverse structure, can realize complete coverage from the whole visible light area to the near-infrared light area, and has excellent compatibility with a base material (such as binder resin), so that the color conversion film with excellent performance is formed, and green light and red light with high luminous efficiency and high color purity can be obtained when the color conversion film is applied to an LED driven by blue light, so that the color rendering index of the LED is improved.

The invention discloses a high-color-rendering-index white light device and a preparation method and application thereof, yellow YAG and wide-band red and green nitride fluorescent powder improve the color rendering index of an LED, a flexible polymer is used as a packaging material, and the high-color-rendering-index white light LED device applied to a lighting source is prepared; red fluorescent powder and green fluorescent powder are added on the basis of yellow fluorescent powder, and a white light LED device with the color rendering index of 96.9 is obtained. The color rendering index is high, meanwhile, the mass ratio of the 6901A silica gel to the 6901B silica gel is adjusted, the fluorescent powder is packaged, and the flexible fluorescent powder composite light-emitting film with the maximum deformation displacement and the optimal fracture stress is obtained and used for device preparation. The color rendering index of the device can be effectively improved, and the adopted packaging film can still show excellent mechanical properties when subjected to stretching and cyclic physical deformation. Wide application prospects are realized in the fields of high-performance white light LED lighting devices, wearable equipment and flexible display.

The invention belongs to the technical field of LED luminescent materials, and relates to a preparation method of red fluorescent powder, the general formula of the red fluorescent powder is M2SiF6: Mn < 4 + >, M is K or Na, and the preparation method comprises the following steps: S1, reacting to generate potassium fluoromanganate, washing and drying; s2, crushing the dried potassium fluoromanganate; s3, adding a hydrofluoric acid solution into the autoclave, then adding potassium fluosilicate or sodium fluosilicate, and fully stirring and dissolving; s4, adding the potassium fluoromanganate crushed in the step S2 into the solution obtained in the step S3 to serve as a seed crystal; s5, adding a crystal form control agent, heating, pressurizing, stirring and reacting, and then cooling, decompressing and recrystallizing; and S6, filtering the recrystallization liquid to obtain a pink product, cleaning, drying and sieving to obtain the product. The red fluorescent powder disclosed by the invention is large in granularity, good in dispersity, high in crystallinity, high in brightness and good in aging resistance; the absorption peak requirement of the light conversion material based on the LED is completely met, the cost is low, and the process is simple.

The present invention relates to a spectral dimming packaging structure containing a violet or near-ultraviolet chip, and also to a manufacturing method of the packaging structure, which is characterized by comprising a first wavelength blue light chip, a second wavelength blue light chip, a violet or near-ultraviolet chip and a packaging layer, a long wavelength phosphor glue layer is arranged on the surface of the first wavelength blue light chip to form a long wavelength package, a short wavelength phosphor glue layer is arranged on the surface of the violet or near-ultraviolet chip to form a short wavelength package, and the packaging layer is used to encapsulate each short wavelength package, the second wavelength blue light chip and the long wavelength package as a whole. The advantages of the present invention are: using multiple chips with different wavelengths for excitation can take into account the excitation wavelengths of different phosphors, and can avoid the short wavelength fluorescence generated by the short wavelength phosphor from exciting the long wavelength phosphor again and being reabsorbed; the optimal excitation wavelength achieves the highest quantum efficiency and improves the light efficiency of the light source at the same time.

The present invention relates to the technical field of CSP light sources, and in particular to a dual-color temperature CSP light source and a preparation method and application thereof, comprising a high color temperature CSP light source and a low color temperature CSP light source, wherein the color temperature of the high color temperature CSP light source is 6000-7000K, and the color temperature of the low color temperature CSP light source is 2000-3000K; the high color temperature CSP light source and the low color temperature CSP light source are both composed of an internal blue light chip and a fluorescent layer wrapping the exposed surface of the chip, wherein the blue light chip comprises at least three blue light chips with different wavelengths within a wavelength range of 400-500nm, and when used in COB, no additional layer of fluorescent glue is required, so that the preparation method of COB is simpler, and the dual-color temperature CSP in the full-spectrum COB not only has excellent aging performance and good stability, but also has a high color rendering index and high brightness.

This invention discloses a fluorophosphate-based red fluorescent material, its preparation method, and its application. The fluorophosphate-based red fluorescent material has the chemical composition shown in formula (1): K 2+2x Ca 1‑y‑ x Eu y PO4F(1), where 2+2x represents the mole fraction of K, y represents the mole fraction of Eu, 1-y-x represents the mole fraction of Ca, 0≤x≤0.2, 0.005≤y≤0.02. This fluorophosphate-based red fluorescent material emits red fluorescence with a strongest emission peak at a wavelength of 660nm when excited by light in the 300–470nm wavelength range.

The invention belongs to the technical field of fluorescent materials, and discloses fluorescent powder as well as a preparation method and application thereof. The chemical formula of the fluorescent powder is Ba < 2.92 > Mg < 0.08 > BP3O12: 12% Eu < 2 + > / Eu < 3 + >. The fluorescent powder not only can be applied to the field of optical temperature measurement, but also can be applied to the field of white light LED illumination. When being applied to optical temperature measurement, the optical temperature sensor has the advantages of quick effect, high resolution, high sensitivity, high temperature resistance, no need of direct contact with an object and the like, and can still ensure high discrimination degree of signals while performing high-sensitivity test. The fluorescent powder can be used as a white light LED device after being mixed with commercial fluorescent powder, white light emitted by the prepared LED device is high in color rendering index and high in luminous efficiency, and the light color does not change along with the change of current and temperature and is stable.

The light-emitting device provided by the present invention includes a first light source, a second light source, a dichroic mirror, a wavelength conversion device, a first optical path adjustment device or a second optical path adjustment device, and a first scattering optical system. In the present invention, the light mixing effect of the emitted light can be improved by using the first scattering optical system. The color temperature of the emitted light of the light-emitting device can be freely adjusted by adjusting the power of the first light source and the second light source separately. A laser that can emit light of different main wavelengths can also be used in the second light source to improve the color rendering index of the emitted light of the light-emitting device. The light emitted by the first light source in the present invention is all used to excite the wavelength conversion device. Compared with the prior art solution, the light-emitting device provided in the present invention can achieve a higher luminous flux output without increasing the optical extension. If a polarization selection element is used in the first light source, the luminous flux output of the light-emitting device can be further improved.

The utility model discloses a lighting device, which comprises a light source assembly, a main light source assembly and an auxiliary light source assembly, and is characterized in that the main light source assembly is used for generating main light; the auxiliary light source assembly is used for generating auxiliary light and comprises a second auxiliary light source assembly, and the auxiliary light emitted by the second auxiliary light source assembly is used for compensating the main light; the light condensing assembly is arranged on an emergent light path of the light source assembly and used for condensing the main light and the auxiliary light to obtain projection light; auxiliary light emitted by the second auxiliary light source assembly at least comprises a first peak wavelength and a second peak wavelength, the first peak wavelength is larger than 580 nm, and the second peak wavelength is smaller than 550 nm; the Duv color deviation of the auxiliary light emitted by the second auxiliary light source assembly on a chromaticity diagram is smaller than or equal to 0.02. In this way, the color cast phenomenon and the color temperature change can be improved, and the color rendering index can be adjusted.

The present invention relates to a high-rendering index and high-light-efficiency package, comprising a support member, on which a first LED chip and a second LED chip are arranged; a red phosphor colloid layer is arranged on at least the top surface of the surface of the second LED chip to form a package A; a short-wavelength phosphor colloid layer that does not contain red phosphor is arranged outside the first LED chip and the package A to form an overall package. The advantages of the present invention are that the high-rendering index and high-light-efficiency package of the present invention can take into account the excitation wavelengths of different phosphors by using multiple chips with different wavelengths for excitation.

The application belongs to the technical field of RGB mixed light, and provides a light emitting device, a light mixing method, a light mixing device, a terminal device and a storage medium. B = 0.1474 ± 0.100, y B = 0.0330 ± 0.100; a green light source with a peak wavelength of 536nm ± 10nm and a half wave width greater than 100nm, color coordinates on a CIExyY chromaticity diagram are x G = 0.3899 ± 0.100, y G = 0.5381 ± 0.100; and a red light source with a peak wavelength of 630nm ± 10nm and a half wave width greater than 75nm, color coordinates on a CIExyY chromaticity diagram are x R = 0.6358 ± 0.100, y R = 0.3192 ± 0.100. The light emitting device provided by the application has high color rendering index and light efficiency of mixed white light.

The application provides a full-spectrum complex-phase fluorescent ceramic and a preparation method and application thereof. 1‑x‑y Sr y AlSiN3:xEu (0 1‑x‑a‑b Y a Gd b )3(Al 1‑c Ga c )5O 12 :xCe (0 12 The short-time ceramic sintering and the faster temperature rising and falling rate in the application effectively slow down the grain growth in the ceramic sintering process, and in the short-time sintering process, the nitride powder forms the oxide phase in situ without causing large decomposition or sintering so as to make it invalid. In short, through the short-time high-temperature pulse sintering, the sintering densification of the complex-phase ceramic is promoted, and the nitride phase is avoided from being oxidized in the long-time high-temperature process to cause the sharp drop of the luminous efficiency.

This application provides an LED lamp bead and an LED light source, belonging to the field of LED technology. It includes: a substrate; at least one blue LED chip located on the substrate; and a phosphor layer located on the substrate and the blue LED chip. The phosphor layer contains a first nitride red phosphor, a second nitride red phosphor, a fluoride red phosphor, a green phosphor, and a yellow-green phosphor. The peak wavelength of the fluoride red phosphor is greater than the peak wavelength of the first nitride red phosphor and less than the peak wavelength of the second nitride red phosphor. This allows the LED lamp bead to achieve both a high color rendering index and good luminous efficiency.

The present invention relates to an illumination device, characterized in that it comprises a first light source, a second light source, a first light path adjustment device, a second light path adjustment device or a third light path adjustment device, a wavelength conversion device, and a first scattering optical system. In the present invention, at least part of the light emitted by the first light source is used to excite the wavelength conversion device, and part of the light emitted by the second light source is also used to excite the wavelength conversion device. Therefore, compared with the prior art solution, the illumination device provided in the present invention can achieve a higher luminous flux output without increasing the optical etendue.

The invention discloses a fluorescent glass film as well as a preparation method and application thereof. The fluorescent glass film comprises a glass substrate and a fluorescent film coated on the glass substrate, the fluorescent film comprises fluorescent powder and glass powder, and the fluorescent powder is formed by mixing cyan emitting fluorescent powder and red emitting fluorescent powder according to the weight ratio of (5-20): 1; the chemical composition of the cyan emitting fluorescent powder is Ba < 1.93 > Mg < 1-x > CaxSi2O7: 0.07 Eu < 2 + >, x is the molar coefficient of Ca, and x is more than or equal to 0.1 and less than or equal to 0.9; the chemical composition of the red emitting fluorescent powder is (Ca, Sr) AlSiN3: Eu < 2 + >. The fluorescent glass film can generate warm white light with high color rendering index and low color temperature under excitation of purple light; and meanwhile, better light quality can be obtained.

The invention relates to the technical field of nano synthetic materials, and discloses a synthesis method of matrix-free blue-green double-color solid-state fluorescent carbon dots and application of the matrix-free blue-green double-color solid-state fluorescent carbon dots in LED and fingerprint detection.The blue-light seed carbon dots (S-CDs) are synthesized through 1, 2, 4-benzene tricarboxylic acid and urea, and the blue-light seed carbon dots (S-CDs) are obtained through H2O2 oxidation and NaOH treatment; green light (G-CDs) and strong blue light carbon dots (B-CDs) with quantum yields respectively increased by 35 times and 75 times are successfully prepared. Research reveals regulation and control effects of quantum size effect and surface state change on fluorescence color and quantum yield, and hydrogen peroxide and sodium hydroxide treatment improves photoluminescence performance of CDs by changing surface groups and destroying hydrogen bonds. The synthesized G-CDs and B-CDs have the advantages of strong fluorescence, light bleaching resistance, good light stability, low cost, simplicity and convenience in synthesis and the like, can be combined with commercial red fluorescent powder to prepare a white light LED (light-emitting diode) with high color rendering index and proper color temperature, and is suitable for indoor illumination. In addition, B-CDs and G-CDs are used as fluorescent markers, so that the accuracy and reliability of potential fingerprint detection can be effectively improved.

The invention discloses an optical fiber conduction laser system for indoor illumination, and relates to the technical field of laser illumination. The system comprises a blue laser module, a first optical fiber group, a second optical fiber group, a red laser module, a fluorescence conversion element group, an optical shaping element group and an illumination terminal group, the blue laser module serves as an outdoor emission source to be connected with the first optical fiber set. The first optical fiber set serves as a light transmission medium to be connected to the fluorescence conversion element set. The red laser module as an outdoor supplementary emission source is connected with the second optical fiber group; the second optical fiber group as an optical transmission medium is connected to the fluorescence conversion element group; the fluorescence conversion element group is connected to the optical shaping element group, and both are connected to the lighting terminal group as fluorescence conversion devices. The laser light source and the fluorescence conversion material are separated, the size is smaller, and the heat management difficulty is lower; the blue laser module and the red laser module are introduced, so that the integration level is higher, and the color rendering index is better; the optical fiber conduction wiring cost is lower, and the method is suitable for industrial application.

The invention discloses an LED oven lamp and an assembling method thereof, and relates to the technical field of oven accessories, the key points of the technical scheme are as follows: the LED oven lamp comprises a glass cover, a metal shell, a radiator, a lens, a ceramic bracket and a PCB (Printed Circuit Board) provided with LED lamp beads, and two ends of the ceramic bracket are respectively connected and fixed between the radiator and the metal shell; the glass cover is in threaded connection with the end, away from the heat dissipation body, of the metal shell, the ceramic support is provided with an inner cavity, the PCB is fixed to the portion, located in the inner cavity, of the heat dissipation body, the lens is pressed on the PCB through the ceramic support, the lens is suitable for converging light beams of the LED lamp beads and guiding the light beams to the glass cover, and the metal shell is provided with an installation part capable of being installed in a groove in the wall of an oven chamber. And a heat insulation distance is formed between the LED lamp bead and the mounting part. The invention can provide the illumination effect of cold white light in the oven, and has the advantages of high color rendering index, low energy consumption and long service life.

The invention discloses a gallium aluminate green fluorescent material, a preparation method and a white light LED light-emitting device. The general chemical formula of the luminescent material is Y2-xLuAl4GaO12: xCe < 3 + > (x is greater than or equal to 0.003 and less than or equal to 0.08), the luminescent material has strong absorption in an excitation region of 300-500nm, can be effectively excited by blue light and emits green light with the dominant wavelength of about 530nm, and the green light fluorescent material has the advantages of high luminescent intensity, good thermal stability and good chemical stability, and can be widely applied to the field of luminescent materials. And the warm white LED luminescent device manufactured by combining the red fluorescent material with the existing commercial red fluorescent material has the advantages of high brightness, good color rendering performance, high energy conversion rate, good color stability and wide application potential. The preparation method of the green fluorescent material is simple, easy to operate, low in raw material cost, low in equipment cost, free of pollution and suitable for industrial production, and products are easy to collect.

The invention discloses a double-ligand lanthanide series metal-organic framework material and a preparation method thereof. The double-ligand lanthanide series metal-organic framework material is applied to emission of red light, green light and white light. The preparation method comprises the following steps: dissolving lanthanide metal ion salt, 5-(4-carboxyl-phenoxy) isophthalic acid and 1, 10-phenanthroline in a proper amount of deionized water, dropwise adding dilute nitric acid to adjust the pH value, transferring the mixed solution into a closed hydrothermal reaction kettle, and putting the hydrothermal reaction kettle into a constant-temperature blast drying oven for hydrothermal reaction; and centrifuging, washing and drying the collected product to finally obtain the Ln-MOFs luminescent material. The prepared emission material capable of emitting red light and green light has high quantum efficiency, and the white light emission material realizes white light emission under excitation of the wavelength of 365 nm; the fluorescent powder prepared from the material and organic silica gel are combined and coated on an LED chip of 365 nm, and white light with high color rendering index and low color temperature can be obtained.