WO2015021699A1 - 白光量子点复合颗粒及其制备方法 - Google Patents
白光量子点复合颗粒及其制备方法 Download PDFInfo
- Publication number
- WO2015021699A1 WO2015021699A1 PCT/CN2013/087165 CN2013087165W WO2015021699A1 WO 2015021699 A1 WO2015021699 A1 WO 2015021699A1 CN 2013087165 W CN2013087165 W CN 2013087165W WO 2015021699 A1 WO2015021699 A1 WO 2015021699A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light quantum
- quantum dot
- quantum dots
- emulsion system
- mass percentage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/811—Bodies having quantum effect structures or superlattices, e.g. tunnel junctions
- H10H20/812—Bodies having quantum effect structures or superlattices, e.g. tunnel junctions within the light-emitting regions, e.g. having quantum confinement structures
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
- C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
- C09K11/88—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
- C09K11/881—Chalcogenides
- C09K11/883—Chalcogenides with zinc or cadmium
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/01—Manufacture or treatment
- H10H20/011—Manufacture or treatment of bodies, e.g. forming semiconductor layers
- H10H20/012—Manufacture or treatment of bodies, e.g. forming semiconductor layers having light-emitting regions comprising only Group II-IV materials
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/813—Bodies having a plurality of light-emitting regions, e.g. multi-junction LEDs or light-emitting devices having photoluminescent regions within the bodies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Definitions
- Embodiments of the present invention relate to a white light quantum dot composite particle and a method of fabricating the same. Background technique
- OLED Organic light-emitting diodes
- WOLED Into white light.
- the presence of impurities can lead to quenching of excitons and increase in device resistance, resulting in low luminous efficiency and short lifetime.
- the purification of organic materials accounts for a considerable proportion of WOLED cost control.
- WOLED adopts small molecular organic materials and is prepared by vacuum evaporation process, which has high process cost and serious waste of raw materials.
- the goal of WOLED is to become a truly low-cost, high-efficiency, long-life flat-panel white light source.
- Quantum dots also known as semiconductor nanocrystals, are a new type of semiconductor nanomaterial with a size of l-10nm. They have unique photoluminescence and electroluminescence properties due to quantum size effects and confinement effects. Compared with traditional organic fluorescent dyes, quantum dots have high quantum yield, high photochemical stability, and are not easy to photolyze, as well as wide excitation, narrow emission, high color purity, and luminescent color can be adjusted by controlling quantum dot size. Optical properties. WOLEDs prepared by replacing quantum organic materials with small molecular organic materials have the advantages of high luminous efficiency, good stability, long life, high brightness and wide color gamut.
- a method of using a quantum dot as a white light source is generally prepared by mixing RGB three-color quantum dots in a certain ratio.
- the disadvantages of this method are: RGB three kinds of quantum dots are easy to agglomerate, resulting in poor stability; the ratio of the three primary colors is difficult to control; the emitted optical language is unstable, the light is uneven and the process is complicated. therefore, The above technical problems need to be solved urgently. Summary of the invention
- Embodiments of the present invention provide a white light quantum dot composite particle with controllable particle size, uniform size, and high stability, to solve the problem of poor stability, unstable emission spectrum, and uneven light distribution of a conventional white light source. And technical problems with complex processes.
- One aspect of the present invention provides a white light quantum dot composite particle comprising a seed particle located at a core, and a first shell layer, a second shell layer, and a third shell layer sequentially coated on the seed particle, wherein the first shell The layer, the second shell layer and the third shell layer are respectively one of a red quantum dot layer, a green quantum dot layer and a blue quantum dot layer, and are different from each other.
- the quantum dot layers of the above three colors may be arbitrarily combined, and the white light quantum dot composite particles of the present invention can be obtained.
- the seed particles may be inorganic nanoparticles, such as silica nanoparticles, A1 2 3 3 nanoparticles or ZnO nanoparticles, and may be silica nanoparticles having a surface modified with a polymerizable double bond. Particles.
- the polymerizable double bond can be introduced by the preparation process of the sol gel, or can be modified later.
- the silica nanoparticles of the examples of the present invention are generally prepared by a sol-gel method and have uniform size.
- the seed particles have a particle diameter of 10 to 500 nm, preferably 20 to 50 nm; and the thickness of the first, second, and third shell layers may optionally be 5 to 50 nm, preferably 10 to 20 nm.
- the thickness of each shell remains the same.
- the ratio of R:G:B quantum dots can be 0.5 ⁇ 0.8:1:1.2 ⁇ 1.5, for example, 0.65 ⁇ 0.74:1:1.25 ⁇ 1.35.
- the red light quantum dot is a CdSe quantum dot having an emission wavelength of 600 to 700 nm; the green light quantum dot is a CdSe quantum dot having an emission wavelength of 490 to 570 nm; and the blue quantum dot is an emission wavelength of 430 ⁇ 460 nm CdSe quantum dots.
- a red light quantum dot is a CdSe quantum dot emitting at a wavelength of 613 nm; a green light quantum dot is a CdSe quantum dot having an emission wavelength of 555 nm; and a blue light quantum dot is a CdSe quantum dot having an emission wavelength of 452 nm.
- the embodiment of the invention can limit the RGB three-color quantum dots in a spherical space, and can solve the problems of poor stability and low quantum efficiency of the current quantum dot materials; at the same time, the individual RGB composite particles can be used as a white light source to synthesize white light. Uniform light emitted by the luminescent layer, WOLED device The preparation process is cylinderized.
- One embodiment of the present invention provides a method for preparing white light quantum dot composite particles, which can rapidly and conveniently batch-produce the white light quantum dot composite particles, thereby improving the scalability of the composite particles.
- Another aspect of the present invention provides a method for preparing a white light quantum dot composite particle, comprising: dispersing a seed particle in water to obtain a seed suspension; and separating a red light quantum dot, a green light quantum dot, and a blue light quantum dot with a monomer, respectively
- the emulsion, the surfactant and the water are mixed and emulsified to obtain three emulsion systems, which are respectively named as emulsion system A, emulsion system B and emulsion system C; the seed suspension is heated to 60-90 ° C, and the emulsion system A is added dropwise thereto.
- the reaction is kept for 2-10 hours; then the emulsion system B is added dropwise to the seed suspension, and after the completion of the dropwise addition, the reaction is kept for 2-10 hours; then the emulsion system C is added dropwise to the seed suspension, and the dropwise addition is finished. Thereafter, the reaction is kept for 2-10 hours to form the first shell layer, the second shell layer and the third shell layer in sequence; after the reaction is finished, the product is washed to obtain the white light quantum dot composite particles.
- the preparation of the emulsion systems A, B, C may be carried out in the same manner or may be adjusted within the limits of the invention.
- the emulsion systems A, B, and C are not limited to a certain quantum dot emulsion system, and those skilled in the art can randomly name emulsion systems containing red light quantum dots, green light quantum dots, and blue quantum dots as emulsion systems A, B, and C. And encapsulating in order to achieve any combination of multi-color quantum dots of the first shell layer, the second shell layer, and the third shell layer.
- the same process parameters such as the dropping rate of each emulsion system, the reaction time, and the like, can also be employed.
- the same or different emulsion system preparation or shell formation methods can be used to obtain the composite particles claimed herein.
- Embodiments of the present invention preferably employ the same process parameters to obtain white light quantum dot composite particles of more uniform quality and controllability.
- the seed particles may have a mass percentage concentration of 5-8%, such as 5.5-7%.
- the seed particles may have a particle diameter of 10 to 500 nm, for example, 20 to 50 nm.
- the monomer is at least one of olefins having a total of 4 to 24 carbon atoms, preferably styrene.
- the monomer may have a mass percentage of 0.1-20%, for example 0.2-10%, in each emulsion system.
- the initiator is at least one of potassium persulfate, ammonium persulfate, sodium persulfate and hydrogen peroxide, preferably potassium persulfate or sodium persulfate.
- the mass percentage of the initiator may range from 0.1% to 8% by mass of the monomer, such as from 0.5% to 4%.
- the surfactant is at least one of sodium dodecylate, sodium dodecyl sulphate or cetyltrimethylammonium bromide, preferably sodium lauryl sulfate or hexadecane. Trimethylammonium bromide.
- the surfactant may be present in an amount of from 0.1% to 10%, such as from 0.5% to 5% by mass, based on the total weight of the emulsion system.
- the mass percentage of the red light quantum dot, the blue light quantum dot and the green light quantum dot in each emulsion system may be 0.08-12%. But it is not limited to this.
- the mass percentage of red light quantum dots, blue quantum dots and green light quantum dots in each emulsion system may be 0.9-2.66%.
- the mass ratio of seed particles to green light quantum dots is 10-12.5:1, as described in the examples, 10:1, 12:1, and 12.5:1.
- the emulsion system may have a dropping rate of 0.01 to 5 ml/min, such as 0.1 to 0.5 ml/min.
- the seed suspension temperature may be 60-90 ° C, for example 75-85 ° C, preferably 80 ° C; the incubation reaction time may be 2-10 hours, such as 4-8 hours.
- the preparation method of the embodiment of the present invention wherein the dispersion of the seed particles and the emulsification process involved in the formation of the emulsion system can be achieved by means of existing auxiliary means to achieve a more desirable and quicker preparation, including but not limited to ultrasonic assist. Any technical means that can accelerate dispersion and emulsification can be applied to the technical solution to realize the present invention.
- the preparation method of one embodiment of the present invention comprises: dispersing the silica nanoparticles in water to obtain a seed suspension, respectively, and sequentially dropping the emulsion system containing red light quantum dots, green light quantum dots and blue light quantum dots in a certain proportion. Adding to the seed suspension for reaction, and layer coating on the surface of the seed ball to obtain the white light quantum dot composite particles; the emulsion system is mixed by quantum dots, monomers, initiators, surfactants and water Emulsified.
- the preparation method is convenient and easy to realize batch production.
- the R:G:B quantum dot selectable ratio can be: 0.5 ⁇ 0.8:1:1.2 ⁇ 1.5, for example 0.65 ⁇ 0.74:1:1.25 ⁇ 1.35.
- the thickness of the formed first, second, and third shell layers may be selected from the range of 5 to 50 nm, for example, 10 to 20 nm. As an ideal technical solution, the thickness of each shell layer remains the same.
- the product in the production method of the examples of the present invention, can be washed by centrifugation with ethanol/water after completion of the reaction.
- Figure 1 is a schematic view showing the structure of a white light quantum dot composite particle of the present invention.
- the white light quantum dot composite particle of the embodiment of the present invention comprises: a seed particle located at a core, and a first shell layer, a second shell layer and a third shell layer sequentially coated on the seed particle, wherein the first shell layer, the second shell layer
- the shell layer and the third shell layer are respectively one of a red (R) photo quantum dot layer, a green (G) photo quantum dot layer, and a blue (B) photo quantum dot layer, and are different from each other.
- the seed particles may be inorganic nanoparticles such as silica nanoparticles, alumina (Al 2 O 3 ) nanoparticles or oxidized (ZnO) nanoparticles.
- the inorganic nanoparticles can be used as ideal seed particles to provide a core for the composite particles to ensure their luminescent properties.
- the seed particles of the composite particles of the examples of the present invention for example, silica nanoparticles whose surface can be modified with a polymerizable double bond.
- the ratio of R:G:B quantum dots can be any combination of R:G:B quantum dots.
- the first, second and third shell layers can be combined into a white light emitting layer to emit uniform light, so that the preparation process of the WOLED device is obtained.
- the particle size of the seed particles may be any suitable particle size.
- first, second, and third shell layers may be any thickness of the first, second, and third shell layers.
- each shell layer can be kept the same.
- the ratio of the amount of the seed particles to the quantum dots of the respective colors can be selected according to the actual situation. Choice and adjustment.
- the thickness of each shell layer in the composite particles can be defined, in order to obtain higher quality composite particles, the inventors preferred the ratio of the two in the actual research and are embodied in the following examples.
- the mass ratio of the seed particles to the green light quantum dots is preferably 10-12.5:1, more preferably 10:1, 12:1 and 12.5:1 as described in the examples.
- the seed particles and the quantum dots of each color can form a stable layered structure better, and ensure its excellent luminescence performance as a white light source.
- the red light quantum dot is a CdSe quantum dot having an emission wavelength of 600 to 700 nm; the green light quantum dot is a CdSe quantum dot having an emission wavelength of 490 to 570 nm; and the blue quantum dot is an emission wavelength of 430 to 460 nm.
- CdSe quantum dots it is more preferable that the red light quantum dot is a CdSe quantum dot having an emission wavelength of 613 nm; the green light quantum dot is a CdSe quantum dot having an emission wavelength of 555 nm; and the blue light quantum dot is a CdSe quantum dot having an emission wavelength of 452 nm.
- the selection range of the emission wavelength of each color quantum dot is screened to further improve the quality of the composite particle, and the ⁇ emission spectrum is more stable and the light is more uniform.
- Another embodiment of the present invention also provides a method of preparing white light quantum dot composite particles, which can be carried out as follows.
- Step 1 Disperse the seed particles in water to obtain a seed suspension.
- Step 2 The red light quantum dots, the green light quantum dots and the blue light quantum dots are separately emulsified with a monomer, an initiator, a surfactant and water to obtain three emulsion systems, which can be named as emulsion system A and emulsion system B, respectively. And emulsion system C.
- Step 3 The seed suspension is heated to 60-90 ° C, and the emulsion system A is added dropwise thereto. After the dropwise addition, the reaction is kept for 2-10 hours; the emulsion system B is continuously added to the seed suspension, and after the dropwise addition is completed, The heat preservation reaction is carried out for 2-10 hours; the emulsion system C is continuously added dropwise to the seed suspension, and after the completion of the dropwise addition, the reaction is kept for 2-10 hours, thereby sequentially forming the first shell layer, the second shell layer and the third shell layer.
- Step 4 The product is washed after the end of the reaction to obtain the white light quantum dot composite particles.
- the product is washed by centrifugation with ethanol/water, the selection of the concentration of the washing liquid, and the specific washing operation are not particularly limited.
- Step 1 Disperse the seed particles in water to obtain a seed suspension having a mass percentage concentration of seed particles of 5-8%, preferably 5.5-7%.
- the seed particles are inorganic nanoparticles such as silica nanoparticles, A1 2 3 3 nanoparticles or ZnO nanoparticles, preferably silica nanoparticles having a surface modified with a polymerizable double bond.
- the monomer of the step 2 may be at least one of olefins having a total of 4 to 24 carbon atoms, preferably styrene.
- the monomer may have a mass percentage of from 0.1 to 20%, for example from 0.2 to 10%, in each emulsion system.
- the initiator may be at least one of potassium persulfate, ammonium persulfate, sodium perchlorate and hydrogen peroxide, preferably potassium persulfate or sodium persulfate.
- the mass percentage of the initiator may range from 0.1% to 8% by mass of the monomer, for example preferably from 0.5% to 4%.
- the surfactant may be at least one of sodium lauryl sulfate, sodium dodecyl sulfate or cetyltrimethylammonium bromide, preferably sodium lauryl sulfate, cetyltrimethyl Ammonium bromide.
- the surfactant may be present in an amount of from 0.1 to 10% by mass, preferably from 0.5 to 5%, by mass per emulsion system.
- the mass percentage of the red light quantum dots, the blue light quantum dots and the green light quantum dots in the emulsion system of the embodiment of the present invention may be, but not limited to, 0.08-12%, for example, preferably 0.9-2.66%.
- the mass percentage of the red light quantum dots in each emulsion system is 0.1-8%, preferably 0.9-1.43%
- the mass percentage of the green light quantum dots in each emulsion system is 0.1-10%, preferably 1.75-1.8%
- the mass percentage of the blue light quantum dots in each emulsion system is 0.08-12%, preferably 2.14-66.6%.
- the inventors found that the combination of the selected (type and amount) of monomers, initiators, and surfactants can optimize the emulsification process and ensure that the emulsion systems A, B, and C have ideal stability. And uniformity, which is conducive to the formation of each shell in step 3, and at the same time makes the whole preparation process easier and more convenient for mass production.
- the mass ratio of the seed particles to the green light quantum dots may be 10-12.5:1, more preferably 10:1, 12:1 and 12.5:1.
- the dropping rate of each emulsion system may be from 0.01 to 5 ml/min, for example, preferably from 0.1 to 0.5 ml/min. At such a drop acceleration, the formation of the shell is more controllable.
- the seed suspension temperature may be from 60 to 90 ° C, for example, preferably from 75 to 85 ° C, more preferably from 80 ° C; and the incubation reaction time may be from 2 to 10 hours, for example, preferably from 4 to 8 hours.
- each shell layer is coated on the surface of the seed particles layer by layer, and finally a white light source with high stability and high quantum efficiency is obtained.
- a white light quantum dot composite particle as shown in Figure 1, the composite particle comprising a seed particle located at the core
- the seed particles were silica nanoparticles having a particle diameter of 30 nm modified with a polymerizable double bond.
- the ratio of the red, green and blue quantum dots is 0.72:1:1.23.
- the red light quantum dots are CdSe quantum dots with an emission wavelength of 613 nm; the green light quantum dots are CdSe quantum dots with an emission wavelength of 555 nm; the blue light quantum dots are CdSe quantum dots with an emission wavelength of 452 nm, and the first and second composite particles are formed.
- the thickness of the third shell layer is about 20 nm.
- the composite particles of the present invention can be prepared by the preparation method of the embodiment of the present invention, and those skilled in the art can foresee the preparation method described in any of the embodiments 6-12, as long as the conventional adjustment of the application document is stated. (If the adjustment of the order of each quantum dot layer, the adjustment of the ratio of the quantum dots to the seed particles, the moderate adjustment of the reaction conditions, etc.), the white light quantum dot composite particles of the embodiment of the present invention can be obtained, and therefore, the present disclosure is no longer - Described separately.
- the difference of this example is only that the seed particles in this embodiment are silica nanoparticles having a surface diameter of 20 nm modified with a polymerizable double bond.
- the first shell layer 2 is a blue quantum dot layer
- the second shell layer 3 is a green light quantum dot layer
- the third shell layer 4 is a red light quantum dot layer.
- the ratio of red, green and blue quantum dots is 0.65:1:1.25
- the thicknesses of the first, second and third shell layers formed are all 10 nm.
- the difference in this embodiment is only that the seed particles in the present embodiment are silica nanoparticles having a surface diameter of 50 nm modified with a polymerizable double bond.
- the first shell layer 2 is a green light quantum dot layer
- the second shell layer 3 is a red light quantum dot layer
- the third shell layer 4 is a blue light quantum dot layer.
- the ratio of the red, green and blue quantum dots is 0.74:1:1.35, and the thicknesses of the first, second and third shells formed are both 50 nm.
- the difference in this embodiment is only that the seed particles in the present embodiment are silica nanoparticles having a particle diameter of 10 nm and having a polymerizable double bond modified on the surface.
- the first shell layer 2 is a green light quantum dot layer
- the second shell layer 3 is a blue quantum dot layer
- the third shell layer 4 is a red light quantum dot layer.
- the ratio of the red, green and blue quantum dots is 0.5: 1:1.2, and the formed 1.
- the thickness of the second and third shell layers are 5 nm, 12 nm, and 20 nm, respectively.
- the seed particles in the present embodiment are silica nanoparticles having a particle diameter of 500 nm and having a polymerizable double bond modified on the surface.
- the first shell layer 2 is a blue quantum dot layer
- the second shell layer 3 is a green light quantum dot layer
- the third shell layer 4 is a red light quantum dot layer.
- the ratio of the red, green and blue quantum dots is 0.8: 1:1.2
- the thicknesses of the formed first, second and third shell layers are 450 nm, 400 nm and 380 nm, respectively.
- An aqueous solution of (KPS) and 5 g of water are mixed and emulsified to obtain an emulsion system A; the mass percentage of the monomer in the emulsion system is 3.6%, the mass percentage of the initiator is 1% by mass of the monomer, and the surfactant is in the emulsion system. The mass percentage is 1.8%, and the mass percentage of the red light quantum dots in the emulsion system is 0.9%;
- O.lg green light quantum dot 0.2g monomer styrene (St), O.lg surfactant sodium dodecyl sulfate (SDS), 0.2g mass percent concentration of 1% as an initiator
- An aqueous solution of potassium sulphate (KPS) and 5 g of water are mixed and emulsified to obtain an emulsion system B; the mass percentage of the monomer in the emulsion system is 3.57%, the mass percentage of the initiator is 1% by mass of the monomer, and the surfactant is in the emulsion.
- the mass percentage in the system is 1.78%, and the mass percentage of the green light quantum dots in the emulsion system is 1.78%;
- blue quantum dots 0.15g of blue quantum dots, 0.2g of monomeric styrene (St), O.lg surfactant sodium dodecyl sulfate (SDS), 0.2g of a mass percent concentration of 1% of persulfate as initiator
- An aqueous solution of potassium (KPS) and 5 g of water are mixed and emulsified to obtain an emulsion system C; the mass percentage of the monomer in the emulsion system is 3.54%, the mass percentage of the initiator is 1% by mass of the monomer, and the surfactant is in the emulsion system.
- the mass percentage in the medium is 1.78%, and the mass percentage of the blue quantum dots in the emulsion system is 2.66%;
- the dropping rate is 0.1 ml / minute, after the end of the dropwise addition, the temperature is kept for 4 hours; then the above emulsion is added dropwise System B, the dropping rate was 0.1 ml/min, and after the completion of the dropwise addition, the temperature was kept for 4 hours; then, the above emulsion system C was added dropwise, and the dropping rate was 0.1 ml/min. After the completion of the dropwise addition, the temperature was kept for 4 hours.
- the mass ratio of seed particles to green light quantum dots is 10:1.
- O.lg green light quantum dot 0.25g monomer styrene (St), O.lg surfactant sodium dodecyl sulfate (SDS), 0.25g mass percent concentration of 1% as an initiator
- An aqueous solution of potassium sulphate (KPS) and 5 g of water are mixed and emulsified to obtain an emulsion system B; the mass percentage of the monomer in the emulsion system is 4.38%, the mass percentage of the initiator is 1% by mass of the monomer, and the surfactant is in the emulsion.
- the mass percentage in the system is 1.75%, and the mass percentage of the green light quantum dots in the emulsion system is 1.75%;
- the mass ratio of seed particles to green light quantum dots is 12:1.
- O.lg green light quantum dot 0.2g monomer methyl methacrylate (PMMA), O.lg surfactant sodium dodecyl sulphate (SDS), 0.2g mass concentration of 1% as a trigger
- An aqueous solution of potassium persulfate (KPS) and 5 g of water are mixed and emulsified to obtain an emulsion system B; the mass percentage of the monomer in the emulsion system is 3.57%, and the mass percentage of the initiator is 1% by mass of the monomer, and the surface activity is The mass percentage of the agent in the emulsion system is 1.79%, and the mass percentage of the green light quantum dot in the emulsion system is 1.79%;
- An aqueous solution of potassium persulfate (KPS) and 5 g of water are mixed and emulsified to obtain an emulsion system C; the mass percentage of the monomer in the emulsion system is 3.56%, and the mass percentage of the initiator is 1% by mass of the monomer, and the surfactant The mass percentage in the emulsion system is 1.78%, and the mass percentage of the blue quantum dots in the emulsion system is 2.14%;
- the dropping rate is 0.1 ml / minute, after the end of the dropwise addition, the temperature is kept for 4 hours; then the above emulsion system B is added dropwise, The acceleration was 0.1 ml/min. After the completion of the dropwise addition, the temperature was kept for 4 hours. Then, the above emulsion system C was added dropwise, and the dropping rate was 0.1 ml/min. After the completion of the dropwise addition, the temperature was kept for 4 hours.
- O.lg green light quantum dot 0.2g methacryloxypropyltrimethylsilane, O.lg surfactant dodecyl sulfate sodium, 0.2g mass percent concentration of 8% as initiator
- An aqueous solution of ammonium persulfate and 0.4 g of water are mixed and emulsified to obtain an emulsion system A; the mass percentage of the monomer in the emulsion system is 20%, the mass percentage of the initiator is 8% by mass of the monomer, and the surfactant is in the emulsion.
- the mass percentage in the system is 10%, and the mass percentage of the green light quantum dots in the emulsion system is 10%;
- the dropping rate is 0.1 ml / minute, after the end of the dropwise addition, the temperature is kept for 8 hours; then the above emulsion system B is dripped, and the dropwise addition The acceleration was 0.1 ml/min. After the completion of the dropwise addition, the temperature was kept for 8 hours. Then, the above emulsion system C was added dropwise, and the dropping rate was 0.1 ml/min. After the completion of the dropwise addition, the temperature was kept for 8 hours.
- the mass ratio of the seed particles to the green light quantum dots is 10:1.
- Example 10 Preparation method of white light quantum dot complex
- O.lg blue quantum dot 0.2g methacryloxypropyltrimethylsilane, O.lg surfactant cetyltrimethylammonium bromide, 0.2g by mass concentration of 4%
- An aqueous solution of sodium persulfate as an initiator and 1.4 g of water were mixed and emulsified to obtain an emulsion system A; the mass percentage of the monomer in the emulsion system was 10%, and the mass percentage of the initiator was 4% by mass of the monomer, and the surface activity was The mass percentage of the agent in the emulsion system is 5%, and the mass percentage of the blue light quantum dot in the emulsion system is 5%;
- the dropping rate is 0.5 ml / minute, after the end of the dropwise addition, the temperature is kept for 2 hours; then the above emulsion system B is added dropwise, The acceleration was 0.5 ml/min. After the completion of the dropwise addition, the temperature was kept for 2 hours. Then, the above emulsion system C was added dropwise, and the dropping rate was 0.5 ml/min. After the completion of the dropwise addition, the temperature was kept for 2 hours.
- the mass ratio of seed particles to green light quantum dots is 12.5:1.
- Example 11 Preparation method of white light quantum dot complex (1) dispersing silica nanoparticles having a surface diameter of 500 nm modified with a polymerizable double bond in 14.2 g of water, and uniformly dispersing the particles using ultrasonic waves to obtain a seed suspension having a mass percentage of 6.6%;
- red light quantum dot O.lg methacryloxypropyltrimethyl silane, O.lg surfactant cetyltrimethylammonium bromide, O.lg mass percent concentration 0.1%
- the hydrogen peroxide solution as an initiator and 99.58 g of water were mixed and emulsified to obtain an emulsion system A; the mass percentage of the monomer in the emulsion system was 0.1%, and the mass percentage of the initiator was 0.1% by mass of the monomer, and the surface activity was The mass percentage of the agent in the emulsion system is 0.1%, and the mass percentage of the red light quantum dot in the emulsion system is 0.12%;
- O.lg blue quantum dot, O.lg methacryloxypropyltrimethylsilane, O.lg surfactant cetyltrimethylammonium bromide, O.lg mass percent concentration is 0.1 % of the hydrogen peroxide solution as an initiator and 99.6 g of water, mixed and emulsified to obtain an emulsion system A; the mass percentage of the monomer in the emulsion system is 0.1%, and the mass percentage of the initiator is 0.1% by mass of the monomer, the surface The mass percentage of the active agent in the emulsion system is 0.1%, and the mass percentage of the blue light quantum dot in the emulsion system is 0.1%;
- the dropping rate is 5 ml / minute, after the end of the dropwise addition, the temperature is kept for 10 hours; then the dropwise addition of the above emulsion system B, the drop acceleration After 5 ml/min, after the end of the dropwise addition, the mixture was kept for 10 hours; then, the above emulsion system C was added dropwise, and the dropping rate was 5 ml/min. After the completion of the dropwise addition, the mixture was kept for 10 hours.
- the mass ratio of seed particles to green light quantum dots is 10:1.
- a silica nanoparticle having a lg diameter of 10 nm modified with a polymerizable double bond The particles were dispersed in 19 g of water, and the particles were uniformly dispersed using ultrasonic waves to obtain a seed suspension having a mass concentration of 5%;
- O.lg red light quantum dot 0.2g methacryloxypropyltrimethylsilane, 0.5g surfactant sodium dodecyl sulfate sodium, O.lg mass concentration of 0.5% as an initiator
- the ammonium persulfate solution and 99.1 g water are mixed and emulsified to obtain the emulsion system A; the mass percentage of the monomer in the emulsion system is 0.2%, the mass percentage of the initiator is 0.5% of the monomer mass, and the surfactant is in the emulsion system.
- the mass percentage in the emulsion is 0.5%, and the mass percentage of the red light quantum dots in the emulsion system is 0.1%;
- O.lg green light quantum dot 0.2g methacryloxypropyltrimethylsilane, 0.5g surfactant sodium dodecyl sulfate sodium, O.lg mass concentration of 0.5% as an initiator
- the ammonium persulfate solution and 99.1 g water are mixed and emulsified to obtain the emulsion system A; the mass percentage of the monomer in the emulsion system is 0.2%, the mass percentage of the initiator is 0.5% of the monomer mass, and the surfactant is in the emulsion system.
- the mass percentage in the emulsion is 0.5%, and the mass percentage of the green light quantum dots in the emulsion system is 0.1%;
- the dropping rate is 0.1 ml / minute, after the end of the dropwise addition, the temperature is kept for 2 hours; then the above emulsion system B is added dropwise, The acceleration was 0.1 ml/min. After the completion of the dropwise addition, the temperature was kept for 2 hours. Then, the above emulsion system C was added dropwise, and the dropping rate was 0.1 ml/min. After the completion of the dropwise addition, the temperature was kept for 2 hours.
- the mass ratio of seed particles to green light quantum dots is 10:1.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Luminescent Compositions (AREA)
- Electroluminescent Light Sources (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/368,159 US9257600B2 (en) | 2013-08-16 | 2013-11-14 | White light quantum dot complex particle and process for preparing same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310359549.5A CN103421513B (zh) | 2013-08-16 | 2013-08-16 | 一种白光量子点复合颗粒及其制备方法 |
| CN201310359549.5 | 2013-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015021699A1 true WO2015021699A1 (zh) | 2015-02-19 |
Family
ID=49646913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2013/087165 Ceased WO2015021699A1 (zh) | 2013-08-16 | 2013-11-14 | 白光量子点复合颗粒及其制备方法 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9257600B2 (zh) |
| CN (1) | CN103421513B (zh) |
| WO (1) | WO2015021699A1 (zh) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525406B (zh) | 2013-10-21 | 2015-08-26 | 京东方科技集团股份有限公司 | 一种复合薄膜及其制作方法、光电元件和光电设备 |
| CN103700785B (zh) * | 2013-12-09 | 2016-01-13 | 京东方科技集团股份有限公司 | 空心的白色复合量子点的制备方法、显示面板和显示装置 |
| DE202013011466U1 (de) * | 2013-12-23 | 2014-03-12 | Christian Stroetmann | Elektronische Anzeige, die auf der nanohalbleiterkristallbasierten beziehungsweise auantenpunktbasierten, lichtemittierenden Diode (kurz QLED) basiert |
| CN103779509A (zh) * | 2014-01-27 | 2014-05-07 | 京东方科技集团股份有限公司 | 发光器件及其制作方法和显示面板 |
| CN103788270B (zh) * | 2014-01-29 | 2016-04-20 | 京东方科技集团股份有限公司 | 一种白光量子点复合颗粒及其制备方法、制备装置 |
| CN103980880B (zh) * | 2014-05-21 | 2015-12-02 | 东南大学 | 一种含水溶性量子点的复合材料的制备方法及其应用 |
| JP6697272B2 (ja) | 2015-01-19 | 2020-05-20 | スタンレー電気株式会社 | コアシェル構造を有する量子ドットとその製造方法 |
| CN104868026B (zh) * | 2015-05-22 | 2019-02-22 | 深圳市华星光电技术有限公司 | 量子点发光元件 |
| CN107541203B (zh) | 2016-06-27 | 2020-04-10 | 上海交通大学 | 金属氧化物/二氧化硅包覆或包裹的量子点及其制备方法 |
| CN106147749B (zh) * | 2016-06-27 | 2018-10-09 | 江门职业技术学院 | 荧光微球组装成光子晶体、及其制备方法和应用 |
| KR102608507B1 (ko) | 2016-08-30 | 2023-12-01 | 삼성디스플레이 주식회사 | 표시장치 및 그 제조방법 |
| TWI632220B (zh) * | 2017-04-26 | 2018-08-11 | 國立清華大學 | 量子點膠體組合溶液及其製造方法 |
| EP3537853B1 (en) | 2018-03-09 | 2021-05-05 | Samsung Electronics Co., Ltd. | Electroluminescent display device |
| US20200373279A1 (en) * | 2019-05-24 | 2020-11-26 | Applied Materials, Inc. | Color Conversion Layers for Light-Emitting Devices |
| CN113554972A (zh) * | 2020-04-08 | 2021-10-26 | 陈学仕 | Qled显示面板的串扰改善方法以及qled显示面板 |
| CN116034117A (zh) | 2020-07-24 | 2023-04-28 | 应用材料公司 | 具有用于uv-led固化的基于硫醇的交联剂的量子点配方 |
| US11646397B2 (en) | 2020-08-28 | 2023-05-09 | Applied Materials, Inc. | Chelating agents for quantum dot precursor materials in color conversion layers for micro-LEDs |
| CN115274758A (zh) * | 2022-07-11 | 2022-11-01 | 深圳市华星光电半导体显示技术有限公司 | 量子点基板及其制备方法、显示装置 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050287691A1 (en) * | 2004-06-24 | 2005-12-29 | Industrial Technology Research Institute | Method for doping quantum dots |
| CN101049631A (zh) * | 2007-05-16 | 2007-10-10 | 华东师范大学 | 一种纳米复合物二氧化硅-金属核壳粒子及其制备 |
| CN102344632A (zh) * | 2011-06-13 | 2012-02-08 | 天津大学 | 制备三层核壳结构无机纳米粒子/二氧化硅/高分子复合微球及方法 |
| CN102618289A (zh) * | 2012-02-29 | 2012-08-01 | 东南大学 | 水相无毒多层核壳结构白光量子的制备方法 |
| CN102925158A (zh) * | 2012-10-18 | 2013-02-13 | 济南大学 | 一种多壳结构的量子点复合颗粒、高荧光亮度的量子点探针及其制备方法 |
| WO2013065956A1 (en) * | 2011-11-01 | 2013-05-10 | Korea Institute Of Science And Technology | Tunable light emitting diode using graphene conjugated metal oxide semiconductor-graphene core-shell quantum dots and its fabrication process thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100901947B1 (ko) * | 2006-07-14 | 2009-06-10 | 삼성전자주식회사 | 반도체 나노결정을 이용하는 백색 발광 다이오드 및 그의제조방법 |
| KR100817853B1 (ko) * | 2006-09-25 | 2008-03-31 | 재단법인서울대학교산학협력재단 | 점진적 농도구배 껍질 구조를 갖는 양자점 및 이의 제조방법 |
| US9181472B2 (en) * | 2007-05-31 | 2015-11-10 | Life Technologies Corporation | Magnesium-based coatings for nanocrystals |
| WO2009011205A1 (ja) * | 2007-07-19 | 2009-01-22 | Sharp Kabushiki Kaisha | 発光装置 |
| KR101462657B1 (ko) * | 2008-12-19 | 2014-11-17 | 삼성전자 주식회사 | 반도체 나노 결정 복합체 |
| US9234129B2 (en) * | 2010-08-14 | 2016-01-12 | Seoul Semiconductor Co., Ltd. | Surface-modified quantum dot luminophores |
| CN102618035B (zh) * | 2011-01-26 | 2013-10-16 | 中国科学院理化技术研究所 | 可发射白色荧光的CdSe量子点硅树脂复合材料及制法 |
-
2013
- 2013-08-16 CN CN201310359549.5A patent/CN103421513B/zh active Active
- 2013-11-14 US US14/368,159 patent/US9257600B2/en active Active
- 2013-11-14 WO PCT/CN2013/087165 patent/WO2015021699A1/zh not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050287691A1 (en) * | 2004-06-24 | 2005-12-29 | Industrial Technology Research Institute | Method for doping quantum dots |
| CN101049631A (zh) * | 2007-05-16 | 2007-10-10 | 华东师范大学 | 一种纳米复合物二氧化硅-金属核壳粒子及其制备 |
| CN102344632A (zh) * | 2011-06-13 | 2012-02-08 | 天津大学 | 制备三层核壳结构无机纳米粒子/二氧化硅/高分子复合微球及方法 |
| WO2013065956A1 (en) * | 2011-11-01 | 2013-05-10 | Korea Institute Of Science And Technology | Tunable light emitting diode using graphene conjugated metal oxide semiconductor-graphene core-shell quantum dots and its fabrication process thereof |
| CN102618289A (zh) * | 2012-02-29 | 2012-08-01 | 东南大学 | 水相无毒多层核壳结构白光量子的制备方法 |
| CN102925158A (zh) * | 2012-10-18 | 2013-02-13 | 济南大学 | 一种多壳结构的量子点复合颗粒、高荧光亮度的量子点探针及其制备方法 |
Non-Patent Citations (3)
| Title |
|---|
| LE, YANG: "Progress of White Light-Emitting Diodes Based on II-VI Semiconductor Quantum Dots", INFRARED, vol. 31, no. 2, February 2010 (2010-02-01), pages 8 - 13 * |
| LI, YANQIN;: "Bright White-Light-Emitting Device from Ternary Nanocrystal Composites", ADVANCED MATERIALS, vol. 18, no. 19, October 2006 (2006-10-01), pages 2545 - 2548 * |
| SAMEER, S.: "Bright White-Light Emission from Semiconductor Nanocrystals: by Chance and by Dsign", ADVANCED MATERIALS, vol. 19, no. 4, 24 January 2007 (2007-01-24), pages 569 - 572 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150083991A1 (en) | 2015-03-26 |
| US9257600B2 (en) | 2016-02-09 |
| CN103421513B (zh) | 2015-01-28 |
| CN103421513A (zh) | 2013-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103421513B (zh) | 一种白光量子点复合颗粒及其制备方法 | |
| CN103911142B (zh) | 蓝色量子点复合颗粒、其制备方法、光电元件和光电设备 | |
| Su et al. | Recent progress in quantum dot based white light-emitting devices | |
| CN108624317B (zh) | 一种核壳型量子点及其制备方法和用途 | |
| CN106867528B (zh) | 一种碳纳米点及其制备方法、碳纳米点复合材料及其制备方法和发光led | |
| CN103700785B (zh) | 空心的白色复合量子点的制备方法、显示面板和显示装置 | |
| WO2015021714A1 (zh) | 一种阵列基板及其制备方法、显示装置 | |
| WO2021103169A1 (zh) | 钙钛矿微球、混色光转换薄膜、以及显示器 | |
| CN103710017A (zh) | 微流体法制备白色荧光量子点复合颗粒的方法 | |
| WO2015113352A1 (zh) | 白光量子点复合颗粒及其制备方法、制备装置 | |
| CN101040397A (zh) | 电致发光光源 | |
| CN107093662A (zh) | 一种新型的全无机钙钛矿量子点硅胶透镜及其制备方法 | |
| CN109004094A (zh) | 一种柔性白光器件 | |
| Yin et al. | Efficient and angle-stable white top-emitting organic light emitting devices with patterned quantum dots down-conversion films | |
| CN102618035A (zh) | 可发射白色荧光的CdSe量子点硅树脂复合材料及制法 | |
| CN110041907A (zh) | 一种ZnS/CdZnS/ZnS蓝光量子点的合成方法 | |
| CN104821367A (zh) | 一种硅量子点白光led及其制造方法 | |
| KR101784085B1 (ko) | 이방성 금속 나노입자-유전체 코어-쉘 나노구조체를 포함하는 광변환 발광소자 | |
| WO2020113618A1 (zh) | 发光器件 | |
| CN110164910B (zh) | 颜色转换层及其制备方法、显示装置 | |
| CN107338042B (zh) | 溶剂调控的全色发射铜簇组装体荧光材料、制备方法及其在白光led器件中的应用 | |
| CN109768151B (zh) | 一种照明和显示用多色led及其制备方法 | |
| CN103923646B (zh) | 一种黄色荧光粉及其制备方法 | |
| CN103694988B (zh) | 一种ii-vi族量子点取代稀土离子的荧光材料的制备方法 | |
| CN105742518B (zh) | 一种电致发光显示器件及其制备方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 14368159 Country of ref document: US |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13891595 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 27-06-2016) |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 13891595 Country of ref document: EP Kind code of ref document: A1 |