Ce:YAG microcrystalline glass used for white light LED and preparation method of Ce:YAG microcrystalline glass

A glass-ceramic and glass technology, applied in the field of solid luminescent materials, can solve the problems of unreasonable design of material components, poor optical properties, etc., and achieve the effects of high transparency, excellent luminescent properties, and unique material components

Active Publication Date: 2013-07-03
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
View PDF6 Cites 58 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In short, there have been some invention patents for glass-ceramics used in white LEDs published at home and abroad

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ce:YAG microcrystalline glass used for white light LED and preparation method of Ce:YAG microcrystalline glass
  • Ce:YAG microcrystalline glass used for white light LED and preparation method of Ce:YAG microcrystalline glass
  • Ce:YAG microcrystalline glass used for white light LED and preparation method of Ce:YAG microcrystalline glass

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0096] Example 1:

[0097] Will analyze pure SiO 2 , GeO 2 , TeO 2 , B 2 O 3 , K 2 CO 3 , ZnO and Sb 2 O 3 Powder, press 10SiO 2 : 10GeO 2 : 24TeO 2 : 16B 2 O 3 :15K 2 CO 3 : 20ZnO: 5Sb 2 O 3 The ratio of (molar ratio) is accurately weighed and placed in an agate mortar, mixed in the agate mortar and ground evenly, placed in a platinum crucible, placed in a resistance furnace, heated to 800°C and kept for 2 hours to melt Then, take out the glass melt and quickly pour it into a mold to form a block precursor glass; break the obtained precursor glass, grind it evenly in an agate mortar, and add 5wt% Ce:YAG phosphor for further After grinding for 2 hours, place it in a crucible, then put it in a resistance furnace and heat it to 700℃ and keep it for 1 hour to melt it. Then, the glass melt is taken out and quickly poured into the mold to form a block glass ceramic (such as figure 1 Shown); Finally, the obtained glass-ceramics are annealed at 300 ℃ in a resistance furnace to eliminate ...

Example Embodiment

[0099] Example 2:

[0100] Will analyze pure SiO 2 , GeO 2 , TeO 2 , B 2 O 3 , K 2 CO 3 , ZnO and Sb 2 O 3 Powder, press 10SiO 2 : 10GeO 2 : 24TeO 2 :16B 2 O 3 :15K 2 CO 3 : 20ZnO: 5Sb 2 O 3 After accurately weighing the ratio, place it in an agate mortar, mix and grind in the agate mortar, place it in a platinum crucible, put it in a resistance furnace, heat it to 800°C, keep it for 2 hours to melt it, and then The glass melt is taken out and quickly poured into a mold to form a block precursor glass; the obtained precursor glass is broken, and after grind uniformly in an agate mortar, 1wt% Ce:YAG phosphor is added and further ground for 2 hours Place it in a crucible, then heat it in a resistance furnace to 680°C and keep it for 1 hour to melt it. Then, take out the glass melt and quickly pour it into a mold to form a block glass ceramic (such as Figure 7 Shown); Finally, the obtained glass-ceramic is annealed at 300 ℃ in a resistance furnace to eliminate internal stress. Coup...

Example Embodiment

[0101] Example 3:

[0102] Will analyze pure SiO 2 , GeO 2 , TeO 2 , B 2 O 3 , K 2 CO 3 , ZnO and Sb 2 O 3 Powder, press 10SiO 2 : 10GeO 2 : 24TeO 2 : 16B 2 O 3 :15K 2 CO 3 : 20ZnO: 5Sb 2 O 3 The ratio of (molar ratio) is accurately weighed and placed in an agate mortar, mixed in the agate mortar and ground evenly, placed in a platinum crucible, placed in a resistance furnace, heated to 800°C and kept for 2 hours to melt Then, take out the glass melt and quickly pour it into the mold to form a block precursor glass; break the obtained precursor glass, grind it evenly in an agate mortar, and add 15wt% Ce:YAG phosphor to further After grinding for 2 hours, place it in a crucible, then put it in a resistance furnace and heat it to 650°C and keep it for 1 hour to melt it. Then, the glass melt is taken out and quickly poured into a mold to form a block glass-ceramic; The obtained glass-ceramics were annealed at 300°C in a resistance furnace to eliminate internal stress. Coupling the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides Ce:YAG microcrystalline glass capable of achieving yellow luminescence under the condition of blue light excitation and a preparation method of the Ce:YAG microcrystalline glass, and Ce:YAG fluorescence microcrystals are inlaid uniformly in an oxide glass matrix of the microcrystalline glass. The microcrystalline glass comprises glass components in percentage by mole as follows: 0-10 mol% of SiO2, 0-40 mol% of GeO2, 20-60 mol% of TeO2, 0-25 mol% of B2O3, 0-15 mol% of P2O5, 0-10 mol% of Al2O3, 0-20 mol% of Ae2O, 0-20 mol% of ZnO, 0-15 mol% of BaO, 0-20 mol% of Sb2O3, 0-20 mol% of La2O3 and 0-10 mol% of Bi2O3, wherein Ae is selected from Li, Na or K; and the content of Ce:YAG microcrystals is 1-15 wt% of the oxide glass matrix. The invention further provides a preparation method for the microcrystalline glass. The microcrystalline glass provided by the invention can emit yellow light under the excitation of blue light, the yellow light and the blue light are combined to generate intense white light, and accordingly, the microcrystalline glass and the method can be used for development and application of construction of the white light LED which is excited by a blue light chip.

Description

technical field [0001] The invention relates to the field of solid luminescent materials, in particular to a Ce:YAG glass-ceramic that can be used for white light LEDs and a preparation method thereof. technical background [0002] In recent years, white light-emitting diode (LED) lighting, which has unique advantages such as energy saving and durability, has attracted great attention. At present, it has gradually become a trend to replace traditional incandescent and fluorescent lamps with white LEDs. Common commercial white LEDs are made of blue InGaN chips and Ce-doped 3+ It is made of yttrium aluminum garnet (YAG) phosphor packaged together, and the phosphor is mixed in epoxy resin and coated on the chip. Part of the blue light emitted by the InGaN LED chip is absorbed by the phosphor, causing it to be excited to emit yellow light, and the unabsorbed blue light is mixed with the yellow light emitted by the phosphor to obtain white light. However, due to the poor therm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C03C10/02C03C4/12
Inventor 王元生陈大钦张瑞
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap