Nitrogen oxides luminescent material and preparation method and application thereof

A technology of nitrogen oxide compounds and luminescent materials, which is applied in the direction of luminescent materials, chemical instruments and methods, and the use of gas discharge lamps. It can solve the problems that the luminous intensity of phosphor powder needs to be further improved, and achieve wide excitation spectrum range and good excitation effect. , High color rendering index effect

Active Publication Date: 2010-03-17
BEIJING YUJI SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the luminous intensity of the phosphor needs to be further improved

Method used

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  • Nitrogen oxides luminescent material and preparation method and application thereof
  • Nitrogen oxides luminescent material and preparation method and application thereof
  • Nitrogen oxides luminescent material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 2-7

[0054] Weigh the corresponding raw materials according to the chemical formula and stoichiometry listed in each embodiment in Table 1. The preparation process is the same as that in Example 1. The reaction flux used is the chloride of A, and the luminous intensity of the luminescent material obtained is shown in Table 1.

[0055] Table 1 Chemical formulas and luminescence characteristics of Examples 1-7 (excitation wavelength is 450nm)

[0056] Example

Embodiment 12

[0057] Example 12: Sr 0.86 Ca 0.06 Si 1.96 Al 0.04 O 2.04 N 1.96 :Eu 0.04 , Mn 0.04 Preparation examples of luminescent materials

Embodiment 23

[0060] Example 23: Ca 0.90 Zn 0.06 Si 1.96 Al 0.04 O 2.04 N 1.96 :Eu 0.04 Preparation examples of luminescent materials

[0061] Weigh CaCO according to the above composition 3 (43.72g), ZnO (2.36g), Si 3 N 4 (35.23g), SiO 2 (14.28g), Al 2 O 3 (0.99 g) and Eu 2 O 3 (3.42g), add n-hexane or absolute ethanol and mix evenly, put it into a boron nitride crucible and roast in an air pressure furnace, and pass 8 N at atmospheric pressure 2 , Heat preservation at 1500°C for 2 hours, and the obtained luminescent material is crushed, pickled to remove impurities, and dried to obtain 100 g of the green luminescent material of the present invention. The X-ray diffraction pattern shows that the powder mainly contains CaSi 2 O 2 N 2 Crystal phase with consistent diffraction pattern (greater than 95wt%). See the emission spectrum and excitation spectrum Figure 5 . From 5, it can be found that the emission spectrum of the luminescent material is relatively wide, the half-height width of the sp...

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Abstract

The invention relates to a nitrogen oxides luminescent material and a preparation method and an application thereof, belongs to the semiconductor field. The chemical formula of the nitrogen oxides luminescent material is AxByOzN(2/3x+4/3y-2/3z):R, wherein A is one or more of Be, Mg, Ca, Sr, Ba, Zn, Li and Na, and B is one or more of Si, Ge, Zr, Ti, B, Al, Ga and In and contains at least Si. The luminescent material has stable chemical property and excellent luminescent performance, can be used as the blue/green-to-red nitrogen oxides luminescent material of white-light LED which can be excited by ultraviolet LED or blue light LED; the excitation wavelength is 300-500nm, the luminescent wavelength is 470-700nm, and the luminescent material can be used to prepare white light LED lighting sources or display sources by combining the blue light LED or ultraviolet or near-ultraviolet LED.

Description

[0001] This application is a divisional application with patent application number "2007101181998", the application date of July 2, 2007, and the title of the invention "a nitroxide luminescent material, its preparation method and its application". Technical field [0002] The present invention relates to the field of semiconductors, in particular to oxynitride luminescent materials, preparation methods thereof, and applications in lighting. Background technique [0003] GaN-based light-emitting diode LED (Light-Emitting Diode) is a new type of light-emitting device known as 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, low maintenance, etc. , Can be widely used in various lighting facilities, including indoor lighting, traffic signals / indicators, car taillights / headlights, outdoor super large screens, display screens and advertising screens, etc., replacing all kind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/80H01L33/00
CPCY02B20/181Y02B20/00
Inventor 张小玲王海嵩蔺向阳鲍鹏
Owner BEIJING YUJI SCI & TECH
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