Single-phase whitelight fluorescent powder for ultraviolet light excitation

A technology of ultraviolet light and phosphor powder, applied in the field of light-emitting, can solve the problems of unsatisfactory light-emitting performance and lack of white light phosphor powder, etc.

Inactive Publication Date: 2006-10-25
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is a shortage of white light phosphors that match the near-ultraviolet light tube core, and the luminous per

Method used

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  • Single-phase whitelight fluorescent powder for ultraviolet light excitation

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Embodiment 1

[0010] Embodiment 1: Preparation of Eu xy Sr y-xy MgSi z o 2z+y+1 , where x=0.01; y=2; z=0.5, the specific expression is: Eu 0.02 Sr 1.98 MgSi 0.5 o 4 . Calculate and weigh raw materials according to x=0.01; y=2; z=0.5, weigh 3.52g Eu 2 o 3 , 292.2 g SrCO 3 , 40.3g MgO and 30g SiO 2 , to mix them. After fully grinding and mixing the above raw materials, put them into a high-purity corundum crucible or a platinum crucible, and put them into a high-temperature furnace; heat them for 3-5 hours at a temperature of 1100°C-1400°C under carbon or hydrogen reduction conditions, and then take them out Obtain a single-phase white phosphor: Eu 0.02 Sr 1.98 MgSi 0.5 o 4 .

Embodiment 2

[0011] Embodiment 2: Preparation of Eu xy Sr y-xy MgSi z o 2z+y+1 , where x=0.05, y=2, z=0.5, the specific expression is: Eu 0.1 Sr 2-0.1 MgSi 0.5 o 4 . Calculate and weigh raw materials according to x=0.05, y=2, z=0.5, weigh 17.6g Eu 2 o 3 , 280.44 g SrCO 3 , 40.3g MgO and 30g SiO 2 , to mix them. After fully grinding and mixing the above raw materials, put them into a high-purity corundum crucible or a platinum crucible, and put them into a high-temperature furnace; heat them for 3-5 hours at a temperature of 1100°C-1400°C under carbon or hydrogen reduction conditions, and then take them out Obtain a single-phase white phosphor Eu 0.1 Sr 2-0.1 MgSi 0.5 o 4 .

Embodiment 3

[0012] Embodiment 3: Preparation of Eu xy Sr y-xy MgSi z o 2z+y+1 , where x=0.01, y=2.8, z=0.5, the specific expression is: Eu 0.028 Sr 2.8-0.028 MgSi 0.5 o 4.8 . Calculate and weigh raw materials according to x=0.01, y=2.8, z=0.5, weigh 4.928g Eu 2 o 3 , 409.15 g SrCO 3 , 40.3g MgO and 30g SiO 2 , to mix them. After fully grinding and mixing the above raw materials, put them into a high-purity corundum crucible or a platinum crucible, and put them into a high-temperature furnace; heat them for 3-5 hours at a temperature of 1100°C-1400°C under carbon or hydrogen reduction conditions, and then take them out Obtain a single-phase white phosphor Eu 0.028 Sr 2.8-0.028 MgSi 0.5 o 4.8 .

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Abstract

The invention relates to a singleness phase white light fluorescent dye suitable for ultraviolet light and the manufacture method. It includes the following steps: grinding the raw material, putting into high purity corundum crucible or platinum crucible, putting into high-temperature furnace; under the condition of 1100-1400 degree centigrade and carbon or hydrogen deoxidization, heating 3-5 hours to gain the whit light fluorescent dye. The invention could be used in the new generation white light LED and the current fluorescent lamp.

Description

technical field [0001] The invention belongs to the technical field of light emission, and relates to a single-phase white light phosphor suitable for ultraviolet light (250-450nm) excitation, in particular to a single-phase white light phosphor suitable for ultraviolet light excitation and a preparation method. Background technique [0002] In 1993, Japan's Nichia Chemical Corporation made a technological breakthrough and successfully developed a blue-light GaN light-emitting diode (LED), which brought the dawn of the era of semiconductor solid-state lighting. Compared with incandescent tungsten bulbs and fluorescent lamps, semiconductor lighting has many advantages such as non-toxic, long life (100,000 hours), high efficiency and energy saving, all solid state, low working voltage, good shock resistance and safety, and will become an alternative in the 21st century. A new light source for traditional lighting fixtures. In 1997, Nichia Chemical Corporation used the blue li...

Claims

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Application Information

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IPC IPC(8): C09K11/79
CPCY02B20/00
Inventor 张家骅孙晓园王笑军张霞
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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