A preparation method of yellow light silica gel with both light emitting and encapsulating functions and its application in white light LED

A yellow light and silica gel technology, applied in chemical instruments and methods, luminescent materials, energy-saving lighting, etc., can solve problems such as affecting the luminous performance of LEDs, and achieve the effects of improving uneven dispersion, good optical uniformity, and improving luminous efficiency.

Active Publication Date: 2018-11-16
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the density of phosphor powder is much higher than that of silica gel, the concentration stratification of phosphor powder in the phosphor powder glue will occur due to slow sedimentation, which will affect the luminous performance of LEDs.

Method used

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  • A preparation method of yellow light silica gel with both light emitting and encapsulating functions and its application in white light LED
  • A preparation method of yellow light silica gel with both light emitting and encapsulating functions and its application in white light LED
  • A preparation method of yellow light silica gel with both light emitting and encapsulating functions and its application in white light LED

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Preparation of surface-modified yellow hydrotalcite

[0049] (1.1) Preparation of 2-p-biphenyl-8-hydroxyquinoline

[0050] Dissolve 3g of 4-bromobiphenyl in 15mL of anhydrous ether, under the protection of argon, add 0.1g of lithium metal, stir rapidly for 10 min, dissolve 0.8g of 8-hydroxyquinoline in 10mL of anhydrous ether, add In the above reaction system, stir rapidly, wait for 30 min to react, and the reaction ends. The product was poured into ice water to crystallize, filtered, washed and dried to obtain the crude product. The crude product was purified by chromatographic column to obtain 2-p-biphenyl-8-hydroxyquinoline.

[0051] (1.2) will contain 0.01mol ZnCl 2 , 0.1mol MgCl 2 and 0.024mol AlCl 3 The aqueous solution is prepared as a ternary mixed solution A, in which Al 3+ The concentration is 0.4M;

[0052] (1.3) Pre-mix 5 g of 2-p-biphenyl-8-hydroxyquinoline prepared in step 1 (1.1) in 30 mL of 1M sodium dodecylbenzenesulfonate aqueous solution to...

Embodiment 2

[0073] 1. Preparation of surface-modified yellow hydrotalcite

[0074] (1.1) Preparation of 2-p-biphenyl-8-hydroxyquinoline

[0075] Dissolve 5g of 4-bromobiphenyl in 20mL of anhydrous ether, under the protection of argon, add 0.3g of lithium metal, stir rapidly for 20 min, dissolve 0.5g of 8-hydroxyquinoline in 10mL of anhydrous ether, add In the above reaction system, stir rapidly, wait for 20 min to react, and the reaction ends. The product was poured into ice water to crystallize, filtered, washed and dried to obtain the crude product. The crude product was purified by chromatographic column to obtain 2-p-biphenyl-8-hydroxyquinoline.

[0076] (1.2) will contain 0.05mol ZnCl 2 , 0.3mol Ni(NO 3 ) 2 and 0.09mol Fe(NO 3 ) 2 The aqueous solution is prepared as a ternary mixed solution A, in which Fe 3+ The concentration is 0.9M;

[0077] (1.3) Pre-mix 4 g of 2-p-biphenyl-8-hydroxyquinoline prepared in step (1.1) with 27 mL of 2M sodium stearate aqueous solution to pr...

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Abstract

The invention belongs to the field of semiconductors and particularly relates to a preparation method of yellow-light silica gel with light emitting and packaging functions. The prepared yellow-light silica gel can be applied to white-light LED. The preparation method comprises the steps of carrying out supramolecular assembly on hydrotalcite and a metal organic complex 2-p-biphenyl-8-hydroxyquinoline zinc capable of emitting yellow light at the normal temperature so as to synthesize an organic / inorganic fluorescent material capable of emitting yellow light, respectively introducing the fluorescent material into methyl phenyl vinyl silicone resin and hydrogen-containing methyl phenyl silicone resin in peel-assembly methods so as to prepare yellow-light methyl phenyl vinyl silicone resin and yellow-light hydrogen-containing methyl phenyl silicone resin, and carrying out hydrosilylation, so as to prepare the yellow-light silica gel with the packaging function. By virtue of the yellow-light silica gel prepared by virtue of the preparation method, the preparation and packaging processes can be greatly simplified, and the light emitting and packaging functions can be integrated.

Description

technical field [0001] The invention belongs to the field of semiconductors, and in particular relates to a method for preparing yellow light silica gel which has functions of light emitting and packaging. The prepared yellow light silica gel can be applied to white light LEDs. technical background [0002] LED is a new generation of green light source in the 21st century. It is known as "the technology that illuminates the future", and its economic and social significance is huge. It has the advantages of long life (up to 100,000 hours), pure light color, high efficiency, low energy consumption (the same light source only needs one tenth of the original energy consumption), no pollution, low working voltage and all solid state. At present, there are three main ways to realize white light LED: white light is obtained by mixing red, green and blue (RGB) three primary color chips, white light is obtained by exciting red, green and blue three primary color phosphors by ultravio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/05C08K9/06C08K3/26C08K5/3437C09K11/64C09K11/06H01L33/50
CPCC08L83/04C08L2203/206C08L2205/025C08L2205/03C09K11/06C09K11/64C09K2211/1029C09K2211/188H01L33/501C08K9/06C08K3/26C08K5/3437Y02B20/00
Inventor 陈鸿凌启淡章文贡赵璇邱家斌
Owner FUJIAN NORMAL UNIV
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