120results about How to "High luminous intensity" patented technology

The invention discloses water-soluble up-conversion nanoparticles and a preparation method thereof. The preparation method includes steps of firstly adopting the high-temperature thermal decomposition method to synthesize up-conversion luminescent nanoparticles (UCNPs), adopting NOBF4 to treat the UCNPs for replacing oleic acid molecules on the surface of the UCNPs, finally subjecting the UCNPs to reaction with hydrophilic hyperbranched polymers to obtain the water-soluble up-conversion nanoparticles. The water-soluble up-conversion nanoparticles are good in water solubility and high in light intensity and provided with active groups such as amino, carboxyl and hydroxyl available for coupling biomacromolecules and have promising application prospect in bioimaging, fluorescent labelling, drug carriers and the like.

A kind of gadolinium aluminate based phosphor powder in garnet sand type and the preparing method. The chemical expression of the phosphor powder is Gd3(1-x)Al5O12:Rex or Gd3Al5(1-x)O12:Rex, among which the RE is rare-earth element such as Eu, Pr, Ce or Tb etc, RE can be one or more of the rare-earth element, x is doping gram molecular weight, 0.01 C09K 11/80 1 3 1 2005/3/21 1664063 2005/9/7 100347267 2007/11/7 2007/11/7 2007/11/7 Nanchang University Jiangxi 330047 Luo Lan Tan Dunqiang Zhou Lang

A light emitting diode (LED) structure including a stacked semiconductor layer, a contact layer and a dielectric reflective layer is provided. The stacked semiconductor layer includes a first type doped layer, a second type doped layer and an active layer disposed between the first type doped layer and the second type doped layer, wherein the first type doped layer, the active layer and the second type doped layer are penetrated by a plurality of recesses. The contact layer is disposed on the second type doped layer. The dielectric reflective layer is disposed on the contact layer and extended into the recesses to connect the contact layer and the first type doped layer with a coverage rate equal to or less than 60% from a top view of the LED structure.

The invention discloses a panchromatic fluorescent anti-counterfeiting ink based on conjugated polymer nano-particles, belonging to the technical field of nano luminescent materials. The panchromatic fluorescent anti-counterfeiting ink consists of 0.001-1% of conjugated polymer nano-particles, 0-20% of additive and water in percentage by mass, wherein the conjugated polymer nano-particles consist of a conjugated polymer and a functional polymer; the functional polymer accounts for 1-20% in percentage by mass of the conjugated polymer nano-particles. A prepared nano-particle aqueous solution with small size and uniform distribution can be used as the fluorescent anti-counterfeiting ink with variety of light-emitting wavelengths such as red, green, blue and the like. The anti-counterfeiting ink can be used for obtaining panchromatic anti-counterfeiting patterns with high illumination brightness, stability and non-toxicity by virtue of technologies such as handwriting, ink-jet printing and silk-screen printing. By adopting the panchromatic fluorescent anti-counterfeiting ink, the application range of conjugated light-emitting polymers can be expanded, and the problems that a conventional anti-counterfeiting ink hardly realizes panchromatic and stable anti-counterfeiting can be solved. The panchromatic fluorescent anti-counterfeiting ink disclosed by the invention has a plurality of characteristics of an ideal anti-counterfeiting ink, and can be used for obtaining polychromatic, stable and high-brightness fluorescent anti-counterfeiting patterns.

The invention relates to oil solubility carbon quantum dots (OCDs), PMMA-coated OOCDs, and a preparation method and an application thereof. The particle size of the oil solubility carbon quantum dots is 1-10 nm, and the surface non-saturated carbon bond contains 20-50%. The oil solubility carbon quantum dots synthesized by the method has good dispersibility and luminescence performance, can be taken as an age-proof probe of PMMA, a composite material obtained by in-situ polymerization of the oil solubility carbon quantum dots and the PMMA has excellent optical transparency (the transmittance can reach as high as more than 85%), the anti-ultraviolet aging performance of the PMMA can be increased by more than 10 times, the method solves the problems that the application of carbon quantum dots is existed in all-solid-state illumination in the prior art, and solves the problem that the PMMA cannot be widely used due to poor aging performance.

The invention discloses a backlight source lamp group, relating to the liquid crystal display devices to solve the problem that the prior art only considers heat dissipation mostly when light emissionof a backlight source of an LED generates heat energy. The backlight source lamp group comprises a circuit board and the LED arranged on the circuit board, wherein one side of the circuit board whichis provided with the LED is provided with a thermoluminescent material layer; the thermoluminescent material layer is provided with a through hole corresponding to the LED; and the LED passes throughthe through hole. The invention is applicable to heat energy treatment generated by light emission of the LED in the LED backlight source.

The invention belongs to the field of a light-emitting material, and discloses metal particle doped indium salt-based phosphor and a preparation method thereof. The general chemical formula of the indium salt-based phosphor is Re'1-xRe''InO3:yM; wherein Re' is one or two of Y, La and Sc; Re'' is one or two of Tm, Tb, Eu, Sm, Gd, Dy and Ce; M is one or two of Ag, Au, Pt and Pd nanoparticles; and x is 0.001-0.2; and y is 5*10-5 to 5*10-2. Metal nanoparticles are introduced into the indium salt-based phosphor, the light-emitting strength is greatly improved by surface plasmon resonance effects produced on metal surfaces, and the degree of improvement can reach 40 percent. Meanwhile, under low-voltage (0.5-3kV) excitation, the phosphor has the advantages of good light-emitting performance, high internal quantum efficiency, high chemical stability, good stability and the like.

The present invention is blue-green phosphor powder of RE aluminate for high color developing property energy saving lamp and its preparation process and use. The RE aluminate hst molecular expression of SrMg2Al14O25:Eu2+, and main emitting peak at 480 nm. It is prepared through one high temperature solid phase process with the materials alumina, strontium carbonate, europia and magnesia in the weight ratio of 0.7 to 0.21 to 0.028 to 0.05. It may be excited with 250-300 nm ultraviolet ray to emit blue and green light at high efficiency. It has simple preparation process suitable for industrial production. It is applied in making fluorescent lamp through cooperation with other phosphor powder.

To provide a sialon-based phosphor capable of forming a thin film by mixing it with a resin, and giving a uniform photoluminescent light with high light emission intensity, and to provide a method for producing a sialon-based phosphor not having excessively large agglomerated particles and a wide particle size distribution, there is provided a method for producing an α-sialon based phosphor represented by the formula:

M_xLn_ySi_12-(m+n)Al_(m+n)O_nN_16-n

wherein M is at least one metal selected from Ca, Mg, Y and Li, Ln is at least one lanthanide metal selected from Eu, Dy, Er, Tb, Yb and Ce, ax+by=m (assuming that the valence of metal M is a and the valence of lanthanide metal Ln is b), 0<x≦1.5, 0.3≦m≦4.5, and 0<n<2.25), wherein the silicon nitride raw material used as the raw material is a silicon nitride raw material powder comprising amorphous silicon nitride and crystalline silicon nitride.

The invention discloses glass ceramic used for semiconductor illumination, which comprises the following components in percentage by mol: 45 to 60 percent of SiO2, 0 to 20 percent of Al2O3, 0 to 15 percent of Na2O, 0 to 20 percent of ZnF2, 12 to 20 percent of CeF3, 1 to 3 percent of DyF3 and 1 to 3 percent of EuF3. The glass ceramic is prepared by adopting a high-temperature melting and thermal treatment process, and the method is simple, pollution-free and low in cost. The glass ceramic of the invention has the characteristics of wide exciting wavelength, high luminous brightness, ultraviolet radiation resistance, and good chemical stability and thermal stability. A novel LED illumination device can be made by matching the glass ceramic with an ultraviolet, purple-light or blue-light LED.

The invention discloses a CdSe/ZnS quantum dot nano-cluster based electrochemiluminescence (ECL) biological sensor, as well as a manufacturing method and application thereof to cancer cell detection. According to the technical scheme of the invention, the ECL biological sensor is manufactured by the steps of modifying a magnetic nano-gold rod on the surface of a gold electrode, connecting a cell aptamer, then assembling a nano-gold-DNA initiating chain and finally fixing a CdSe/ZnS quantum dot nano-cluster ECL signal probe. The sensor provided by the invention is washed and then subjected to oscillation warm bath with 100 uL of PBS solution containing cancer cells with different concentration for 45 to 60 minutes, an ECL test is conducted, and the luminescent intensity and the concentration of to-be-tested samples (the cancer cells) form a linear relationship. An nano-gold amplification effect and a hybrid chain type reaction amplification technology are combined, a large amount of CdSe/ZnS quantum dots are assembled on a nano-line, the ECL signal is greatly amplified, the cancer cells are subjected to high-sensitivity and high-selectivity detection, and the method has huge application potential in early clinical detection of the cancer cells.

The invention discloses difunctional light conversion master batches which comprise difunctional light conversion agents, modifying agents and organic polymer materials. A constituting general formula of the difunctional light conversion master batches is Ca1-xNxF2:Eu, TM, wherein the x is greater than or equal to 0 and is smaller than or equal to 1, the N is one kind or more kinds selected from Ba, Zn, Sr, Mg, Hg and Fe, and the TM is one kind or more kinds selected from Sm, Cu, Pr, Tb, Ce, La, Dy, Mn and Ag. The difunctional light conversion agents are good in stability, high in luminous intensity, adjustable in blue/red orange light intensity, and capable of being used for production of difunctional light conversion master batches and then for production of difunctional light conversion films. The manufactured difunctional light conversion master batches can carry out pre-dispersion for red light conversion agents, dispersity of the red light conversion agents in film base bodies is improved, dust pollution when on-site operation is carried out is reduced, and thus the manufactured light conversion films have a good light conversion effect. The difunctional light conversion films can convert ultraviolet light (300nm-380nm) and green light (520nm-560nm) in sunlight to strong blue light (400nm-500nm) and red orange light (575nm-630nm) which can promote growth of crops simultaneously.

The invention discloses a doped system of silicate green fluorescent powder and a preparation method of the doped system of the silicate green fluorescent powder, and belongs to the technical field of luminescent materials. The chemical formula of the silicate green fluorescent powder is , wherein0<=x<=0.25, 0<y<=0.02 and 0<z<=0.1.. The method includes the specific steps that according to the stoichiometric ratio of all the elements in the chemical formula, barium salt, lithium salt, silica, europium oxide, erbium oxide and a moderate amount of surfactant are weighed; a precipitating agent solution is prepared; the europium oxide and the erbium oxide are dissolved with concentrated acid, and water bath processing is performed after a moderate amount of deionized water is added; then the barium salt, the lithium salt, the silica and the surfactant are added and stirred continuously, the precipitating agent is dripped in, the PH is adjusted to be larger than or equal to 7, and the mixture is continuously stirred for 1-4 hours; drying is directly performed, and a precursor is obtained; the precursor is placed in an atmosphere furnace with reducing atmosphere and calcined at 1000-1300 DEG C for 1-7 hours, and the needed fluorescent powder is obtained. The green fluorescent powder used for LEDs is high in luminescence intensity, good in stability and color rendering performance and applicable to exciting near ultraviolet radiation InGaN tube cores.

The invention discloses a method and device for detecting chlorophyll of a coastal zone water body in situ through a double optical path method. According to the method, the concentration of chlorophyll alpha is detected on line on the basis of a fluorescence method detection principle by directly measuring the fluorescence intensity; the device is composed of a light source module, a measuring module, a reference module and a signal processing module. Under excitation of an LED light source, the intensity of fluorescence emitted by the chlorophyll is measured, and the chlorophyll concentration of the coastal zone water body to be detected is calculated through a linearly dependent coefficient calculated by a system model and a compensation value for correcting yellow matter CDOM. The device can quickly detect the concentration of the chlorophyll in the water body on site in real time in a large area and is small in weight and size, convenient to carry, high in accuracy and sensitivity, easy to operate, low in cost and capable of being applied to multiple detection fields.

According to the brightness distribution of a previous frame, the driving current of the backlight module dynamically varies. When the concentration of the brightness distribution is toward high brightness, the backlight module increases its luminous intensity. On the contrary, when the concentration of the brightness distribution is toward low brightness, the backlight module decreases its luminous intensity. We can set the luminous modulation period of the backlight module to be synchronized with a vertical scanning period or several vertical scanning periods.

The invention relates to fluorescent powder based on ultraviolet light or blue light excitation, a preparation method thereof and application thereof, and relates to a fluorescent material in the technical field of luminescence. By providing the fluorescent powder, the problem of low luminescent efficiency due to reabsorption among different kinds of fluorescent powder in the process of manufacturing white light-emitting diodes (LED) by a process for mixing the fluorescent powder in the prior art is solved. The fluorescent material has a chemical formula (M3-xMnx)(R2-yCey)(Si,GE)3O12, whereinM is at least one of Mg, Ca, Sr, Ba or Zn; R is at least one of Sc, Y, La, Gd or Lu; and x and y are molar fractions, x is more than or equal to 0.01 and less than or equal to 1, and y is more than or equal to 0.0001 and less than or equal to 0.5. After being ground and mixed uniformly, the fluorescent material is put into a crucible and is put into a high-temperature furnace under the condition of reduction atmosphere to obtain the fluorescent powder. The fluorescent powder can be used as single fluorescent powder to manufacture the white LED, and is high in luminous intensity and chemical stability.

The invention relates to a pyridine diimine and cadmium complex of blue-light emitting organic materials and a preparation method thereof, and relates to the light-emitting organic material and the preparation method thereof. The pyridine diimine and cadmium complex solves the problem of lower intensity in light emitting of the existing blue light-emitting organic materials. The molecular formula of the pyridine diimine and cadmium complex is C23H23N3CdCl2, C29H35N3CdCl2 or C27H31N3CdCl2. The preparation method is as follows: 1. a ligand is first prepared; and 2. under the nitrogen protection, the ligand and anhydrous CdCl2 are dissolved in an organic solvent and then blended and refluxed, and finally recrystallized. The product prepared by the preparation method is a single crystal with good shape and the light emitting materials produced can emit blue fluorescence by the test and show better monochromaticity. Additionally, the preparation method is simple in operation and high in yield which can reach more than 83 percent.

Belonging to the technical field of luminescent materials, the invention relates to a multi-rare earth-organic frame material and a preparation method thereof. The multi-rare earth-organic frame material for white light emission adopts 2, 6-pyridinedicarboxylic acid as the organic ligand, takes metal zinc as the matrix, and employs europium and terbium for codoping. The invention groundbreakinglyuses metal zinc as the matrix in the white light-emitting MOFs (metal-organic frameworks) material adopting 2, 6-pyridinedicarboxylic acid as the organic ligand, and employs europium and terbium codoping to prepare the white light-emitting multi-rare earth-organic frame material, the luminous intensity is strengthened, and the stability is better. The invention also successfully adopts the one-step synthesis method to prepare the multi-rare earth-organic frame material. Compared with the existing synthesis of multi-rare earth-organic frame materials, the steps are simpler and the efficiency ishigh, the process equipment for preparation of the material is also simple, and the material synthesis cost is greatly reduced.

The invention relates to nitride fluorescent powder. The nitride fluorescent powder has a chemical structural formula of Ca1-r-tSrtASi1-aPaNb: rR, wherein in the chemical structural formula, a is greater than 0 and less than or equal to 0.1; b is greater than or equal to 2.5 and less than or equal to 3.5; r is greater than or equal to 0.001 and less than or equal to 0.1; t is greater than or equal to 0.6 and less than or equal to 0.9; A represents at least one of B, Al and Ga; R represents at least one of Ce, Eu, Gd, Ho, Er, Tm, Yb and Lu; and Eu is necessary. The invention also relates to a preparation method of the nitride fluorescent powder. The preparation method utilizes Sr to replace Ca so that a crystalline field environment is changed; a main emission peak of the nitride fluorescent powder can be adjusted; and fluorescent powder luminescent intensity is greatly improved. The preparation method adopts P so that fluorescent powder luminescent intensity is improved.

The invention provides an aluminate phosphor with high luminous intensity. Aluminate phosphors are characterized in that they are composed of strontium aluminate containing an activating element, a plurality of primary particles are aggregated into a spherical shape, and no gaps between the primary particles are observed on the surface when observed with an electron microscope at a magnification of 3000 times. Grain composition of surface states at grain boundaries. The aluminate phosphor is suitably manufactured as follows: prepare a mixed slurry obtained by mixing an activated element source, a strontium source, an aluminum source, and a dispersion medium, wet-mix the raw material mixed slurry through a media mill, and use a spray drying method The obtained homogeneously mixed slurry is formed into a dry powder, and the dry powder is fired once at 1000° C. or higher to obtain a primary fired body, and then the primary fired body is subjected to secondary firing.

The invention relates to a dual-functionalized graphene oxide composite material as well as a preparation method and application thereof. The dual-functionalized graphene oxide composite material comprises graphene oxide, a light emitting fragment derived from a luminal chemiluminescent reagent shown as a formula (I) (in the Specification) and a light emission enhancing fragment derived from a biological substance containing a ferrous protoporphyrin active center, wherein the light emitting fragment derived from the luminal chemiluminescent reagent shown as the formula (I) and the light emission enhancing fragment derived from the biological substance containing the ferrous protoporphyrin active center are bound on the surface of the graphene oxide. The dual-functionalized graphene oxide composite material has an excellent light-emitting property.

The invention discloses a quantum dot light-emitting compound used for 3D printing and a preparation method thereof, and belongs to the technical field of nanometer light-emitting materials. The quantum dot light-emitting compound is prepared from, by mass, 85-120 parts of polymer colloid, 10-80 parts of inorganic matter, 1-3 parts of cross-linking agent and 20-80 parts of oil-soluble quantum dots. Compared with the prior art, the oil-soluble quantum dots, the polymer colloid, the cross-linking agent and the inorganic matter (nanometer titanium dioxide or nanometer silicon dioxide) are mixed; the sizes, at the three dimensions, of the oil-soluble quantum dots are generally smaller than 10 nm; compared with fluorescent powder, scattering generated by the oil-soluble quantum dots is very small, no agglomeration happens to the quantum dots in a printed light-emitting body after the quantum dot light-emitting compound is used for printing, and therefore the oil-soluble quantum dots do not deposit in the polymer colloid.

The invention relates to a directional emission scintillator controlled by a surface Plasmon, comprising a base layer, a metal periodic array structure arranged on the base layer, and a plastic scintillator arranged on the metal periodic array structure. Compared with the prior art, the directional emission scintillator can be applied to thicker samples (with the maximum thickness up to 3 microns), which is beneficial to significant increase in the luminous intensity; and the directional emission scintillator can achieve higher sensitivity and signal-to-noise ratio in system application, and is of great significance to radiation detection application.

The invention relates to blue florescent powder for a white-light LED, belonging to the technical field of rare earth luminescent materials. The blue florescent powder has a chemical formula of: Ca<1-x>SiO3:xEu2+, wherein x is more than 0 and less than 0.2. The preparation method comprises the following steps of: respectively weighing calcium salts, silicic acid, europium nitrate and an appropriate amount of surfactant and fluxing agent according to the stoichiometric ratio in the chemical formula; fully mixing the weighed reactant, the surfactant and an appropriate amount of ligands and then ball-milling, and adding a lubricating agent when in ball-milling; filtering, washing and drying to obtain a precursor; evenly mixing the precursor with the fluxing agent, and then calcining under the reducing atmosphere to obtain the required florescent powder. In the invention, the blue florescent powder for the LED is prepared by adopting a mechanical force solid-phase chemical reaction method, the specific surface area of the reactant is increased by utilizing the shearing force and the impact force generated in the ball-milling process, the contact face and the diffusion speed of the reactant are improved, and the required time in the chemical reaction is shortened. The prepared fluorescent powder has high luminescent strength as well as good color rendering property and stability, and is suitable for LEDs excited by ultraviolet and near ultraviolet.

The invention relates to blue fluorescent powder for a near ultraviolet LED and belongs to technology for preparing rare-earth fluorescent powder; the blue fluorescent powder has a chemical formula of Ca1-xMgSi2O6:xEu<2+>, x is more than 0 and less than 0.2; the technology comprises the following specific steps: according to the stoichiometric ratio of the chemical formula, calcium salt, magnesium salt, silicic acid, europia and proper amount of precipitator, surfactant and fluxing agent are weighed; the europia is dissolved through concentrated acid, is added with proper amount of deionized water, is subjected to water bath treatment, is added with the calcium salt, the magnesium salt and the surfactant, is stirred and is added with the precipitator for several times; the PH value of the solution is regulated to be more than or equal to 7 through ammonia; the solution is continuously stirred for 0.5 to 4 hours, is kept stand or is subjected to centrifugal precipitation, suction filtering, washing and drying to obtain a precursor; and the precursor and the weighed fluxing agent are evenly mixed, are positioned in a muffle furnace with the protection of reducing atmosphere and are calcined to obtain the needed fluorescent powder. The fluorescent powder completes adulteration and once calcination synthesis when the precursor is subjected to thermal decomposition, has good luminous intensity, stability, color rendering and granularity and is applicable to being used as the blue fluorescent powder of LED activated by InGaN tube core of near infrared radiation (350-410nm).

The invention discloses a multi-quantum well layer which is formed by x InGaN quantum well layers and (x+1) GaN quantum barrier layers which are alternately laminated, wherein X>=1. The molar ratio ofthe In component of the InGaN quantum well layers is 10-20%. The silicon doping concentration of the first GaN quantum barrier layer is 5x10<17>-1x10<19>cm<-3>. The silicon doping concentration of the second GaN quantum barrier layer is y times of the silicon doping concentration of the first GaN quantum barrier layer. The silicon doping concentration of the ith GaN quantum barrier layer is y<i-1> times of the silicon doping concentration of the first GaN quantum barrier layer, wherein 0.5<y<1 and 1<i<=x. The silicon doping concentration of the (x+1)th GaN quantum barrier layer is zero. The invention also discloses an LED epitaxial structure and a preparation method thereof. The multi-quantum well layer has gradient silicon doped quantum barriers so that the electron concentration in thequantum well can be increased and the light-emitting region in the quantum well can be regulated and controlled without further deterioration of the material quality, and thus the luminous intensity of the LED can be enhanced and the luminous wavelength uniformity can be improved.

The invention discloses a method for improving luminosity of europium-doped yttrium oxide red fluorescent powder. In the method, yttrium nitrate, europium nitrate and sodium hydroxide are used as reactants, a two-steps hydrothermal method is carries out in cooperation with subsequent thermal treatment. The method specifically comprises the steps of: firstly, synthesizing Y(OH)3:Eu<3+> at 220 DEG C hydrothermally, then, cladding the Y(OH)3 onto the surface of the Y(OH)3:Eu<3+> under the hydrothermal condition, and finally carrying out thermal treatment on the obtained product at 1000 DEG C to obtain the fluorescent powder of a Y2O3:Eu<3+>/Y2O3 nuclear-shell structure, wherein the molar ratio of the nuclear of Y2O3:Eu<3+> to the shell of Y2O3 is (3:1)-(10:1). By means of the homogeneous cladding, the surface defects of the Y2O3:Eu<3+> nano light-emitting particles can be effectively reduced, and the luminosity of the Y2O3:Eu<3+> nano light-emitting particles can be improved by 5-28% in comparison with that of like products without cladding. By means of the method, the luminosity of the homogeneous cladding product is obviously improved, the advantages of simple process, mild reaction conditions and convenience in operation are achieved, and the method is suitable for large-scale industrialized production.

The invention is suitable for the field of a quantum dot light-emitting diode and provides a QLED having an optical microcavity structure and a preparation method thereof. The QLED having the optical microcavity structure comprises a first electrode, a quantum dot light-emitting layer and a second electrode, which are in stack arrangement in sequence, wherein the first electrode and the second electrode are positive pole and negative pole respectively, or the first electrode and the second electrode are negative pole and positive pole respectively. The QLED further comprises the optical microcavity structure which is arranged at the side, away from the quantum dot light-emitting layer, of the first electrode. The optical microcavity structure is formed by one interference unit or a plurality of interference units in stack arrangement. Each interference unit comprises a first refractive index layer and a second refractive index layer stacked on the first refractive index layer, wherein refractive index of the first refractive index layer is larger than that of the second refractive index layer, and the first electrode is stacked on the second refractive index layer.

The invention belongs to the field of luminescent materials, and discloses a manganese zinc aluminate luminescent material and a preparation method thereof. The luminescent material has molecular formula of Zn1-xAl2O4:Mn<2+>x, My. M represents the doped metal nanoparticles and is at least one of Ag, Au, Pt, Pd and Cu metal nanoparticles, x is in the value range of: 0. The manganese zinc aluminate luminescent material provided by the invention uses alumina aerogel to adsorb metal nanoparticles, in order to obtain the Al2O3 alumina aerogel containing metal nanoparticles; and then the Al2O3 alumina aerogel containing metal nanoparticles is used as a raw material to prepare the luminescent material. By doping metal nanoparticles, luminous intensity of the luminescent material is enhanced.

The invention provides a quartz-based Si-V light-emitting single-particle-layer nano-diamond thin film. A preparation method of the quartz-based Si-V light-emitting single-particle-layer nano-diamond thin film includes the steps that a nano-diamond solution is used for performing sonic oscillation pretreatment on a quartz substrate; a hot filament chemical vapor deposition method is adopted, and preparation is conducted on the pretreated quartz substrate so that a nano-diamond thin film can be obtained; and then the nano-diamond thin film is placed into the air of 500-650 DEG C for heat preservation of 10-50min, and accordingly the quartz-based Si-V light-emitting single-particle-layer nano-diamond thin film is obtained. The preparation method is simple and easy to implement and operate. Binding force of the prepared high Si-V light-emitting single-particle-layer nano-diamond thin film and the quartz substrate is weak, a good foundation is laid for obtaining Si-V light-emitting nano-diamond crystalline grains by means of stripping, and therefore the quartz-based Si-V light-emitting single-particle-layer nano-diamond thin film and the preparation method thereof are of great important scientific significance and engineering value to application of nano-diamond in the fields of biomarkers, single-photon sources and the like.