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Multiple antimonate luminescent materials for white light LED and preparation thereof

A fluorescent material, antimonate technology, applied in the field of fluorescent materials, can solve the problem of low conversion efficiency of fluorescent powder

Active Publication Date: 2009-07-08
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method also has the problem of low phosphor conversion efficiency.

Method used

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  • Multiple antimonate luminescent materials for white light LED and preparation thereof
  • Multiple antimonate luminescent materials for white light LED and preparation thereof
  • Multiple antimonate luminescent materials for white light LED and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Raw material CaCO 3 、Eu 2 o 3 , Sb 2 o 3 According to Ca 2 EuSbO 6 The stoichiometric ratio was weighed, mixed evenly in a mortar, put into a corundum crucible with a cover and pre-fired at 625°C for 24h. The obtained powder is fully ground and then fired at 1000°C, 1200°C and 1400°C for 24 hours respectively. Made into pure Ca 2 EuSbO 6 fluorescent material. see test results figure 1 .

Embodiment 2

[0046] The raw material Ca(NO 3 ) 2 4H 2 O, Y 2 o 3 , Sb 2 o 3 According to Ca 2 wxya 6 The stoichiometric ratio was weighed, mixed evenly in a mortar, put into a corundum crucible with a cover and pre-fired at 625°C for 24h. The obtained powder is fully ground and then fired at 1000°C, 1200°C and 1350°C for 24 hours respectively. Made into pure Ca 2 wxya 6 . The resulting Ca 2 wxya 6 Powder and MnO by Ca 2 wxya 6 :Mn x (x=0-0.3) was ground evenly, and then placed in a vacuumized fused-sealed quartz tube at 950° C. for 24 hours for subsequent doping. get Ca 2 wxya 6 : Mn fluorescent material. see test results figure 2 .

Embodiment 3

[0048] Raw material CaCO 3 , La(NO 3 ) 3 ·6H 2 O, Sb 2 o 3 According to Ca 2 CaO 6 The stoichiometric ratio was weighed, mixed evenly in a mortar, put into a corundum crucible with a cover and pre-fired at 625°C for 24h. The obtained powder is fully ground and then fired at 1000°C, 1200°C and 1350°C for 24 hours respectively. Made into pure Ca 2 CaO 6 . The resulting Ca 2 CaO 6 Powder and MnO by Ca 2 CaO 6 :Mn x (x=0-0.3) was ground evenly, and then placed in a vacuumized fused-sealed quartz tube at 950° C. for 24 hours for subsequent doping. get Ca 2 CaO 6 : Mn fluorescent material. see test results image 3 .

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Abstract

The invention relates to various antimonate luminescent materials which can convert ultraviolet light, near ultraviolet light or blue light of a luminescent element into high-strength visible light and can be used in a white light LED, and a method for preparing the same. The series of the luminescent materials comprise an undoped quaternionic antimonate material, a transition metal doped antimonate material, and a T1 like ion doped antimonate material with an S2 configuration, wherein a rare earth element doped antimonate material and the T1 like ion are similar to a rare earth ion codoped antimonate material. The luminescent materials can be used in the white light LED and relevant display and illuminating devices. The luminescent material has the advantages of unique design, cheap and easily obtained raw materials, simple preparation process, and stable chemical properties of the raw materials and excellent luminescent performance, thus the antimonate luminescent materials are ideal fluorescent powder candidate materials for the white light LED.

Description

technical field [0001] The invention relates to a variety of antimonate fluorescent powder materials that can be used in white light LEDs (light emitting diodes) and a preparation method thereof. Said material is an electro-optical lighting material, which belongs to the field of fluorescent materials. Background technique [0002] Solid State Lighting (Solid State Lighting, SSL) refers to a technology that uses a semiconductor light emitting diode (Light Emitting Diode, LED) to generate white light as a general lighting source. Different from vacuum tube incandescent lamps and mercury-filled fluorescent lamps, it is a brand-new lighting method with the advantages of low calorific value, low power consumption, long life, fast response, small size and flat packaging, etc. A new light source of value. It has a broad market and application prospects, and countries all over the world have formulated development plans one after another. [0003] At present, there are mainly tw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/00H01L33/00
Inventor 黄富强夏玉娟
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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