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Yttrium aluminum garnet fluorescent glass, manufacturing method thereof and use thereof

A technology of yttrium aluminum garnet and fluorescent glass is applied in lighting and heating equipment, optical elements for changing the spectral characteristics of emitted light, lighting devices, etc. Consistency and product yield, stable performance, easy to process and shape

Inactive Publication Date: 2010-04-21
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These and similar patents do not relate to methods for uniformly distributing YAG phosphors in specific glass

Method used

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  • Yttrium aluminum garnet fluorescent glass, manufacturing method thereof and use thereof
  • Yttrium aluminum garnet fluorescent glass, manufacturing method thereof and use thereof
  • Yttrium aluminum garnet fluorescent glass, manufacturing method thereof and use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] According to the formula of the initial material of the glass matrix, weigh the required drug powder, namely BaCO 3 (1g), Na 2 CO 3 (0.4g), H 3 BO 3 (0.9g), SiO 2 (0.3g), Al 2 o 3 (0.56g), YAG (0.83g), the weighed glass matrix initial material was ground with a mortar to make it evenly mixed. Put the ground mixed material into the corundum crucible, add the crucible cover, and put it into the atmosphere protection resistance furnace. Calcined at 1300°C for 4 hours, annealed at 500°C after casting, cut, polished, and polished into YAG fluorescent glass flakes, the glass matrix is: BaO-Na 2 O-B 2 o 3 -SiO 2 -Al 2 o 3 , for white LED packaging.

Embodiment 2

[0027] According to the formula of the initial material of the glass matrix, weigh the required drug powder, namely BaCO 3 (1g), Na 2 CO 3 (0.4g), H 3 BO 3 (0.9g), SiO 2 (0.3g), Al 2 o 3 (0.56g), Y 3-X Ge X Al 5 o 12 : Ce (0.83g), the weighed glass matrix initial material is ground with a mortar to make it evenly mixed. Put the ground mixed material into the corundum crucible, add the crucible cover, and put it into the atmosphere protection resistance furnace. Calcined at 1300°C for 4 hours, annealed at 500°C after casting, cut, polished, and polished into YAG fluorescent glass flakes, the glass matrix is: BaO-Na 2 O-B 2 o 3 -SiO 2 -Al 2 o 3 , for low color temperature white LED packaging.

Embodiment 3

[0029] According to the formula of the initial material of the glass matrix, weigh the required drug powder, namely BaCO 3 (1g), Na 2 CO 3 (0.4g), H 3 BO 3 (0.8g), SiO 2 (0.3g), Al 2 o 3 (0.65g), YAG (0.83g), grind the weighed glass matrix initial material with a mortar and mix it evenly. Put the ground mixed material into the corundum crucible and put it into a high temperature resistance furnace. Calcined at 1400°C for 4 hours, annealed at 500°C after casting, cut, polished, and polished into YAG fluorescent glass flakes, the glass matrix is: BaO-Na 2 O-B 2 o 3 -SiO 2 -Al 2 o 3 , for white LED packaging.

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Abstract

The invention discloses yttrium aluminum garnet fluorescent glass, a manufacturing method thereof and use thereof. The yttrium aluminum garnet fluorescent glass comprises a glass matrix of BaO-Na2O-B2O3-SiO2-Al2O3 and a yttrium aluminum garnet fluorescent powder component. The yttrium aluminum garnet fluorescent glass is manufactured by mixing initial components and yttrium aluminum garnet fluorescent powder, calcining the mixture and casting. The method has the advantages of simple preparation process, easy processing and forming, cheap raw material and large-scale industrial production. The YAG fluorescent powder is well matched with a blue InGaN chip, has the advantages of high luminescent efficiency, stable performance and the like and is the preferred yellow fluorescent material for packaging white LEDs. Indeed, the YAG fluorescent powder glass manufactured by sintering the YAG fluorescent powder in glass is a novel fluorescent material with high performance, low cost and wide application range.

Description

Technical field: [0001] The invention relates to a yttrium aluminum garnet fluorescent glass excited by a blue light chip, a manufacturing method and application thereof. Background technique: [0002] Light-emitting diodes (LEDs) are widely used in indicator lights, signal lights, display screens and other fields due to their inherent advantages, such as power saving, long life, vibration resistance, fast response speed, and environmental protection, and are beginning to enter the field of lighting sources. At present, blue indium gallium nitride (InGaN) LED chips and yellow cerium-doped (Ce 3+ ) activated yttrium aluminum garnet (Cerium-doped Yttrium Aluminum Garnet, referred to as YAG:Ce 3+ ) Phosphor powder occupies a dominant position in the scheme of realizing white light LED. For this method of realizing white light LED, at this stage, the domestic mainly adopts the phosphor powder mixed glue process, that is, directly coats the phosphor powder and organic resin or ...

Claims

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Application Information

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IPC IPC(8): C03C4/12C03C3/064F21V9/10F21V9/40
Inventor 宋国华缪建文方靖淮纪宪明徐淑武
Owner NANTONG UNIVERSITY
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