LED packaging device based on quantum dot particles and preparation method thereof
A technology of LED packaging and quantum dots, which is applied in the field of lighting, can solve the problem of maintaining a large difference in luminous flux performance, and achieve the effects of bright colors, improved brightness and energy efficiency, and improved light efficiency
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Embodiment 1
[0041] For the preparation of quantum dot particles, the following three methods can be used to realize quantum dot embedding in mesoporous materials, but not limited to the following methods:
[0042] 1. Use physical methods to embed quantum dots into mesoporous materials through physical swelling and solvent volatilization;
[0043] 2. In-situ growth of quantum dots, that is, in-situ growth of quantum dots in mesoporous materials;
[0044] 3. In-situ growth of mesoporous materials, that is, in-situ growth of mesoporous materials in quantum dot solutions.
[0045] In this example, quantum dot particles are prepared by physical methods, and quantum dots are embedded in mesoporous materials through physical swelling and solvent volatilization. The specific steps are as follows:
[0046] 1. Take the mesoporous material, the mesoporous material is mesoporous silica, the particle size is 30~60μm, the mesopore diameter is 7~8nm, take 1g of mesoporous silica material and disperse i...
Embodiment 2
[0055] The preparation of quantum dot particles containing metal nanoparticles, the specific steps are:
[0056] 1. Disperse 1g of mesoporous titanium dioxide and 1mL of triangular gold nanoparticles in 100mL of n-hexane, soak and activate the surface of mesoporous titanium dioxide, then heat to reflux, keep warm for 10h, add an inert atmosphere to protect, remove the reflux system, let the solvent evaporate, and get White metal-mesoporous titanium dioxide composite particle powder;
[0057] 2. Calcinate the obtained composite particle powder at 200°C under the protection of an inert atmosphere, and then redisperse it in 50mL of toluene;
[0058] 3. Take 10 mg of CdSe / ZnS quantum dots with an emission wavelength of 530 nm and disperse them into 10 mL of toluene, then disperse the quantum dot solution into the metal-mesoporous titanium dioxide in step 2, and stir rapidly for 2 hours to allow the quantum dots to enter the mesoporous silica; Then remove the reflux equipment, blo...
Embodiment 3
[0065] Using the preparation method of quantum dot particles as described in Example 2, using mesoporous zinc dioxide material as the mesoporous material, using nano-silver as the metal nanoparticle, and polystyrene as the water and oxygen blocking material, the prepared quantum dots Point particles, including quantum dots, metal nanoparticles, mesoporous materials and water and oxygen blocking materials, the quantum dots and the metal nanoparticles are distributed in the mesoporous material, and the quantum dots and the mesoporous The gap between the materials is filled with the water and oxygen blocking material.
[0066] Preparation of LED packaging devices: the blue LED chip is installed in the bowl of the carrier, first use silver glue, white glue, etc. to solidify the crystal, the carrier is a copper substrate, bake, and then weld the wire; then use the dispensing process to glue the phosphor and The mixed material of the transparent gel material is coated on the blue LE...
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