Nitrogen oxide compound fluorescent material and illuminating or displaying light source therefrom

A technology of nitrogen oxides and luminescent materials, applied in luminescent materials, chemical instruments and methods, electrical components, etc., can solve the problems of poor chemical and thermal stability of sulfide phosphors, pollute the environment, exhaust gas, etc., and achieve easy realization Mass production, high energy conversion, and stable performance

Active Publication Date: 2007-09-05
BEIJING ZHONGCUN YUJI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical and thermal stability of sulfide phosphor is very poor, it is easy to react with the moisture in the ai

Method used

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  • Nitrogen oxide compound fluorescent material and illuminating or displaying light source therefrom
  • Nitrogen oxide compound fluorescent material and illuminating or displaying light source therefrom
  • Nitrogen oxide compound fluorescent material and illuminating or displaying light source therefrom

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

Example 1: Sr 0.90 Mg 0.06 Si 2 o 2 N 2 :Eu 0.04 Preparation example of luminescent material

Weigh SrCO3 (53.48 grams), ZnO (1.95 grams), Si3N4 (29.12 grams), SiO2 (11.80 grams), Al2O3 (0.82 grams) and Eu2O3 (2.83 grams) according to the above composition, add n-hexane or absolute ethanol to mix and grind After uniformity, N2 / H2 (95% / 5%) was introduced under normal pressure, the flow rate was 2 liters / minute, and 0.1gSrF2 was used as a flux, and it was kept at 1400°C for 4 hours. The condition is to bake again at high temperature to promote the development of grains. The obtained luminescent material was pulverized, washed with hydrochloric acid to remove impurities, and dried to obtain 100 g of the green luminescent material of the present invention. Its X-ray diffraction pattern is shown in Fig. 2, and it can be seen from the figure that the powder mainly contains a crystal phase (greater than 95wt%) having the same diffraction pattern as SrSi2O2N2. Its emission and ...

Example Embodiment

Example 14: Sr 0.90 Zn 0.06 Si 1.96 al 0.04 o 2.04 N 1.96 :Eu 0.04 Preparation example of luminescent material

Weigh SrCO3 (53.48 grams), ZnO (1.95 grams), Si3N4 (29.12 grams), SiO2 (11.80 grams), Al2O3 (0.82 grams) and Eu2O3 (2.83 grams) according to the above composition, add n-hexane or absolute ethanol to mix and grind After uniformity, N2 / H2 (95% / 5%) was introduced under normal pressure, the flow rate was 2 liters / minute, and 0.1gSrF2 was used as a flux, and it was kept at 1400°C for 4 hours. The condition is to bake again at high temperature to promote the development of grains. The obtained luminescent material was pulverized, washed with hydrochloric acid to remove impurities, and dried to obtain 100 g of the green luminescent material of the present invention. Its X-ray diffraction pattern is shown in Fig. 2, and it can be seen from the figure that the powder mainly contains a crystal phase (greater than 95wt%) having the same diffraction pattern as SrSi2O2N2....

Example Embodiment

Example 2-22:

The corresponding raw materials are weighed according to the chemical formula listed in each embodiment in Table 1-2 and the stoichiometry, the preparation process is the same as in Example 1, wherein the reaction flux used is chloride or fluoride of A, and the obtained The luminous intensity of the luminescent material is shown in Table 1.

The chemical formula and its luminescent characteristics (excitation wavelength is 450nm) of table 1 embodiment 1-18 embodiment chemical formula emission main peak nm relative intensity % 1 Sr 0.90 Mg 0.06 Si 2 o 2 N 2 :Eu 0.04 539 92 2 Sr 0.90 Ca 0.06 Si 2 o 2 N 2 :Eu 0.04 545 98 3 Sr 0.90 Ba 0.06 Si 2 o 2 N 2 :Eu 0.04 540 103 4 Sr 0.90 La 0.04 Si 2 o 2 N 2 :Eu 0.04 542 85 5 Sr 0.90 Gd 0.04 Si 2 o 2 N 2 :Eu 0.04 542 84 6 Sr 0.90 Lu 0.04 Si 2 o 2 N 2 :Eu 0.04 545 95 7 Sr 0.90 Y 0.04 Si 2 o 2 N 2 :Eu 0.04 542 92 8 Sr 0.94 Li 0.04 Si 2 o 2 N 2 :Eu 0...

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Abstract

A nitrogen-oxygen compound luminescent material and its production are disclosed. The material consists of A and B, A is selected from any one of alkali metal alkaline earths and rare earth metal; B is selected from any one of III-V family element containing Si; 0<=x<=1.0; 1.0<=y<=2.0; 1.0<=z<=2.0; 1.0<=w<=3.0. It can give out blue and green, green or yellow light with wavelength 470-570nm while it is excited by ultraviolet, near-ultraviolet or blue light. It's efficient, stable and simple, has wide wavelength range and no environmental pollution. It can be used for ultraviolet, near-ultraviolet or blue-light LED, other luminescent materials and white-light LED light source.

Description

technical field The invention relates to the field of semiconductors, in particular to a nitrogen oxide luminescent material, a preparation method thereof, and an illumination or display light source made thereof. Background technique GaN-based light-emitting diode (Light-Emitting Diode) is a new type of light-emitting device known as the solid-state lighting in the 21st century. It has the advantages of small size, power saving, long life, no mercury that pollutes the environment, high efficiency, and low maintenance. , can be widely used in various lighting facilities, including indoor lighting, traffic signals / indicators, car taillights / headlights, large outdoor screens, display screens and advertising screens, etc., and can replace all kinds of bulbs and Fluorescent trend. This new type of green light source will become a new generation of lighting system, which has extensive and far-reaching significance for energy saving, environmental protection, and improving peopl...

Claims

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Application Information

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IPC IPC(8): C09K11/80H01L33/00
Inventor 张小玲蔺向阳鲍鹏何国书
Owner BEIJING ZHONGCUN YUJI TECH
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