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Rare earth activated white light luminescent glass material as well as preparation method and application thereof

A fluorescent glass and white light technology, applied in the field of rare earth-activated white fluorescent glass materials and their preparation, can solve the problems of intensified academic, technical and commercial competition, insufficient efficiency, stability, chromaticity, and packaging, and reduce the preparation cost. , the effect of simplifying the packaging process and the preparation process

Active Publication Date: 2013-02-20
艾柯谷生态农业发展(河北)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of developing high-power, high-brightness and high-color-rendering light sources for general lighting and display backlight applications, the existing phosphor / epoxy resin white light mode has limitations in efficiency, stability, chromaticity, packaging, etc. Serious shortage, the corresponding academic, technical and commercial competition is increasingly intensified

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Molar percentage 20SrO-xB 2 o 3 -yP 2 o 5 , x / y=0.8, 1.0, 1.2, 1.4, 1.6, x+y=80; Eu 2 o 3 , the added amount is 0.5mol% of SrO, Tb 4 o 7 Accurately weigh the borophosphate glass composition at a ratio of 0.5mol% of SrO, the total weight of the glass composition is 5g, wherein strontium carbonate (SrCO 3 ), boron oxide (B 2 o 3 ) and ammonium dihydrogen phosphate (NH 4 h 2 PO 4 ) is analytically pure and rare earth gold oxide europium oxide (Eu 2 o 3 ) and terbium oxide (Tb 4 o 7 ) has a purity of 99.99%; the mixture is put into a mortar and added with 5ml of dehydrated ethanol, ground for 30 minutes, put into a drying oven, and dried at 60 for 1 hour to obtain a powdery mixture.

[0018] 2) Put the above powder mixture in a corundum crucible for glass melting, the melting temperature is 1300°C, keep it warm for 1 hour, then pour it into a preheated copper mold in the molten state, and anneal at 400°C for 2 hours , to obtain a transparent fluorescent g...

Embodiment 2

[0023] 1) Molar percentage 25SrO-45B 2 o 3 -30P 2 O5 ratio glass component, added Eu 2 o 3 , 0.5mol% of SrO, Tb 4 o 7 The proportion of 0.25, 0.375mol% of SrO is accurately weighed borophosphate glass matrix components, the total weight of the glass components is 5g, wherein strontium carbonate (SrCO 3 ), boron oxide (B 2 o 3 ) and ammonium dihydrogen phosphate (NH 4 h 2 PO 4 ) is analytically pure and rare earth gold oxide europium oxide (Eu 2 o 3 ) and terbium oxide (Tb 4 o 7 ) has a purity of 99.99%; the mixture is put into a mortar and added with 5ml of dehydrated ethanol, ground for 30 minutes, put into a drying oven, and dried at 60 for 1 hour to obtain a powdery mixture.

[0024]2) Put the above powder mixture in a corundum crucible for glass melting, the melting temperature is 1300°C, keep it warm for 1 hour, then pour it into a preheated copper mold in the molten state, and anneal at 400°C for 2 hours , to obtain a transparent fluorescent glass with a d...

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Abstract

The invention discloses a rare earth activated white light luminescent glass material, which is composed of borophosphate glass and rare earth dopant, wherein the borophosphate glass comprises strontium oxide, boron oxide and phosphorus oxide; the rare earth dopant comprises europium oxide and terbium oxide, and doping quantity is not more than 5% of mole number of strontium oxide. The preparation method of the luminescent glass comprises the following steps: adding absolute ethyl alcohol in a solid raw material, grinding and drying to obtain powder mixture; then putting the powder mixture into a crucible for melting glass, and pouring into a copper mould for shaping; combining the obtained transparent luminescent glass with a gallium nitride-based chip excitation source; and packaging into a white light lighting device. The invention has the advantages that the rare earth activated borophosphate luminescent glass has simple preparation procedures, Eu2<+>can be obtained without reducing atmosphere, and thus preparation cost is lowered. The luminescent glass and the gallium nitride-based semiconductor chip are directly assembled into a white light device, and the packaging procedure of a light emitting diode is simplified.

Description

【Technical field】 [0001] The invention relates to the field of optoelectronic material technology and semiconductor technology, in particular to a rare earth-activated white light fluorescent glass material and its preparation method and application. 【Background technique】 [0002] The white light diode of solid-state lighting technology adopts phosphor powder conversion to realize white light point light source, mainly including red, blue and green three-chip, blue light or near-ultraviolet light single-chip excitation phosphor powder. Among them, the GaN-based chip and trivalent cerium ion-doped yttrium aluminum garnet phosphor / epoxy resin conversion synthetic white light mode has a simple structure and is currently the mainstream white light mode. According to this technology, it is widely used in the world A huge industrial chain has been formed. From the perspective of developing high-power, high-brightness and high-color-rendering light sources for general lighting an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/19C03C4/12
Inventor 王达健徐所成田华郑玺吕天帅仇坤王鹏陆启飞蔡毅费沁妮毛智勇于文惠
Owner 艾柯谷生态农业发展(河北)有限公司
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