White light-emitting glass and preparation method thereof

A technology of glass and white light, applied in the field of solid luminescent materials, can solve the problems of complex coating process of phosphor powder, different luminous life of phosphor powder and blue light chip, color difference, etc., to overcome the problems of color difference and color rendering, and avoid complicated coating The effect of simple process and preparation process

Active Publication Date: 2015-01-28
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved in the present invention is to disclose a kind of white light-emitting glass and its preparation method that can be excited by long-wave ultraviolet light (346nm~380nm), which solves the problem of color difference caused by the different luminous life of phosphor powder and blue light chip, and avoids Overcome the complex coating process of traditional phosphors

Method used

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  • White light-emitting glass and preparation method thereof
  • White light-emitting glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Using analytically pure SiO 2 、H 3 BO 3 , Mg(CO 3 )·4Mg(OH) 2 ·6H 2 O, ZnO, ZrO 2 , NaCO 3 、Gd 2 o 3 , Sb 2 o 3 、Al 2 o 3 , and 99.99% CeO 2 , Tb 4 o 7 and MnCl 2 As the main raw material, according to 50SiO 2 14B 2 o 3 8MgO 8ZnO 3.5ZrO 2 3Na 2 O 0.4Gd 2 o 3 0.1Sb 2 o 3 10Al 2 o 3 0.8CeO 2 0.8Tb 2 o 3 · 1.5MnO composition Weigh the batch material. After accurate weighing, place it in an agate mortar, grind it for more than half an hour to make it evenly mixed, then put it into a corundum crucible, and reduce the atmosphere in a high-temperature resistance furnace (H 2 :N 2 =5:95) and heated to 1550°C for 3 hours, then quickly pour the molten glass into a copper mold for forming; put the obtained precursor glass into a resistance furnace, anneal at 550°C for 3 hours, then cool with the furnace to Eliminate internal stress. Finally, a colorless and transparent glass is obtained, which emits bright white light under the radiation of 346nm u...

Embodiment 2

[0015] Using analytically pure SiO 2 、H 3 BO 3 , Mg(CO 3 )·4Mg(OH) 2 ·6H 2 O, ZnO, ZrO 2 , NaCO 3 、Gd 2 o 3 , Sb 2 o 3 、Al 2 o 3 , and 99.99% CeO 2 , Tb 4 o 7 and MnCl 2 As the main raw material, according to 48SiO 2 16B 2 o 3 8MgO 8ZnO 3.5ZrO 2 3Na 2 O 0.4Gd 2 o 3 0.1Sb 2 o 3 10Al 2 o 3 0.8CeO 2 1Tb 2 o 3 · 1.5MnO composition Weigh the batch material. After accurate weighing, place it in an agate mortar, grind it for more than half an hour to make it evenly mixed, then put it into a corundum crucible, and reduce the atmosphere in a high-temperature resistance furnace (H 2 :N 2 =7:93) and heated to 1580°C for 2.5 hours, then quickly pour the molten glass into a copper mold for forming; put the obtained precursor glass into a resistance furnace, anneal at 580°C for 2.5 hours, then cool with the furnace to Eliminate internal stress. Finally, a colorless and transparent glass is obtained, which emits bright white light under the irradiation of 365...

Embodiment 3

[0017] Using analytically pure SiO 2 、H 3 BO 3 , Mg(CO 3 )·4Mg(OH) 2 ·6H 2 O, ZnO, ZrO 2 , NaCO 3 、Gd 2 o 3 , Sb 2 o 3 、Al 2 o 3 , and 99.99% CeO 2 , Tb 4 o 7 and MnCl 2 As the main raw material, according to 45SiO 2 19B 2 o 3 8MgO 8ZnO 3.5ZrO 2 3Na 2 O 0.4Gd 2 o 3 0.1Sb 2 o 3 10Al 2 o 3 0.8CeO 2 0.8Tb 2 o 3 · 1.8MnO composition Weigh the batch material. After accurate weighing, place it in an agate mortar, grind it for more than half an hour to make it evenly mixed, then put it into a corundum crucible, and reduce the atmosphere in a high-temperature resistance furnace (H 2 :N 2=2:98) and heated to 1600°C for 2 hours, then quickly pour the molten glass into a copper mold for forming; put the obtained precursor glass into a resistance furnace, anneal at 600°C for 2 hours, then cool with the furnace to Eliminate internal stress. Finally, a colorless and transparent glass is obtained, which emits bright white light under the irradiation of 380nm ...

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Abstract

The invention discloses white light-emitting glass. Ce<3+>\Eu<2+>, Tb<3+> and Mn<2+>\Eu<3+> ions are used as a trichromatic luminescent center to be doped into a multicomponent borosilicate glass matrix to prepare borosilicate light-emitting glass doped with Eu and Tb, Ce, Tb and Mn or Ce, Tb and Eu. The invention also provides a method for preparing the borosilicate light-emitting glass. The borosilicate light-emitting glass can be excited effectively by long-wave ultraviolet light to emit red, green and blue trichromatic light, so that white light is compounded, and the problem of chromatic aberration caused by different luminescent service lives of fluorescent powder and blue-light chips; and simultaneously, the conventional complex process for coating the fluorescent powder is avoided, and the method is expected to be used for manufacturing a novel white light-emitting diode (LED) device based on the excitation of ultraviolet chips.

Description

technical field [0001] The invention relates to the field of solid light-emitting materials, in particular to a white light-emitting glass capable of being excited by long-wave ultraviolet light and a preparation method thereof. Background technique [0002] As the fourth-generation lighting source after incandescent lamps, fluorescent lamps and HID (high-intensity discharge) lamps, white LEDs have great application prospects in the field of lighting and display because of their energy saving, environmental protection, long life, small size and many other advantages. . Currently, common commercial white LEDs are made of blue InGaN chips and doped Ce 3+ It is made of yttrium aluminum garnet (YAG) yellow phosphor powder packaged together, and the phosphor powder is coated on the LED chip and mixed in epoxy resin. Its luminescence principle is: part of the blue light emitted by the InGaN chip and the excited YAG: Ce 3+ The yellow light emitted by the yellow phosphor is mixed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C4/12C03C3/095
Inventor 杨旅云余阳戴能利刘自军李进延蒋作文彭景刚李海清
Owner HUAZHONG UNIV OF SCI & TECH
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