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Fluorescent powder material for light-emitting diode (LED) lighting and preparation method thereof

A technology for LED lighting and phosphors, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of high production cost, harsh reaction conditions, unsatisfactory process repeatability and product performance stability, etc., to reduce the reaction intensity, The effect of promoting sufficiency and preventing agglomeration effect

Active Publication Date: 2018-09-04
SHANDONG YICHANG LIGHTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these existing synthesis methods have harsh reaction conditions, and need to use a special pressure sintering furnace for long-term heat treatment under high temperature and high pressure conditions. The production cost is high, and the process repeatability and product performance stability are not ideal.

Method used

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  • Fluorescent powder material for light-emitting diode (LED) lighting and preparation method thereof
  • Fluorescent powder material for light-emitting diode (LED) lighting and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of phosphor material for LED lighting, comprising the following steps:

[0030] (1) Si 3 N 4 One-stage combustion preparation step of raw material powder, taking silicon powder, Si 3 N 4 , NaN 3 Powder is used as raw material, wherein the mass percentage of silicon powder in the raw material is 62.5wt%, Si 3 N 4 The mass percentage of powder in the raw material is 13wt%, NaN 3 The mass percent of powder in raw material is 15.5wt%; Wherein, described silicon powder, NaN 3 、Si 3 N 4 The purity of the powder is greater than or equal to 98%, Si 3 N 4 α-Si3N in powder 4 accounted for all Si 3 N 4 The mass percentage of the powder is greater than or equal to 94.6wt%, and the rest is β-Si 3 N 4 And a small amount of free Si; the above raw materials are fully mixed and added to a vacuum high-pressure burner, and nitrogen with a purity greater than or equal to 99% is introduced after vacuuming, preferably with a nitrogen purity of 99.99%, and ...

Embodiment 2

[0036] A preparation method of phosphor material for LED lighting, comprising the following steps:

[0037] (1) Si 3 N 4 One-stage combustion preparation steps of raw material powder: take silicon powder, Si 3 N 4 , NaN 3 Powder is used as raw material, wherein the mass percentage of silicon powder in the raw material is 68.5wt%, Si 3 N 4 The mass percentage of powder in the raw material is 22wt%, NaN 3 The mass percent of powder in raw material is 9.5wt%; Wherein, described silicon powder, NaN 3 、Si 3 N 4 The purity of the powder is greater than or equal to 98%, Si 3 N 4 α-Si3N in powder 4 accounted for all Si 3 N 4 The mass percentage of the powder is greater than or equal to 94.6wt%; the above-mentioned raw materials are fully mixed and added to a vacuum high-pressure burner, and nitrogen with a purity greater than or equal to 99% is introduced after vacuuming, and the inflation pressure is greater than or equal to 2.0MPa and less than or equal to 2.5MPa. Ti p...

Embodiment 3

[0041] A preparation method of phosphor material for LED lighting, comprising the following steps:

[0042] (1) Si 3 N 4 One-stage combustion preparation steps of raw material powder: take silicon powder, Si 3 N 4 , NaN 3 Powder is used as raw material, wherein the mass percentage of silicon powder in the raw material is 65.5wt%, Si 3 N 4 The mass percentage of powder in the raw material is 17.5wt%, NaN 3 The mass percentage of the powder in the raw material is 17wt%. Among them, the silicon powder, NaN 3 、Si 3 N 4 The purity of the powder is greater than or equal to 98%, Si 3 N 4 α-Si3N in powder 4 accounted for all Si 3 N 4 The mass percentage of the powder is greater than or equal to 94.6wt%; the above-mentioned raw materials are fully mixed and added to a vacuum high-pressure burner, and nitrogen with a purity greater than or equal to 99% is introduced after vacuuming, and the inflation pressure is greater than or equal to 2.0MPa and less than or equal to 2.5...

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Abstract

The invention relates to a fluorescent powder material for light-emitting diode (LED) lighting and a preparation method thereof. A two-stage burning synthesis new technology is adopted for nitride andnitric oxide fluorescent powder for LED, so that two types of high-quality raw material powder, i.e., Si3N4 and AlN are prepared, and the nitride and nitric oxide fluorescent powder is further prepared. According to the fluorescent powder material for LED lighting and the preparation method provided by the invention, the influence rule of formula and process parameters on ingredients, structuresand performance of the prepared raw material powder and the fluorescent powder is systematically researched, and on the basis, through the process optimization, the Si3N4 and AlN raw material powder with low oxygen content and high activity, and the nitride and nitric oxide fluorescent powder with a complete crystal form and excellent light-emitting performance are prepared.

Description

technical field [0001] The invention relates to the field of energy-saving and environment-friendly new materials, in particular to a phosphor material for LED lighting and a preparation method thereof. Background technique [0002] Compared with traditional incandescent bulbs and fluorescent tubes, LED light sources have the advantages of energy saving, environmental protection, small size, and long life. They are considered to be a promising new generation of lighting technology. In today's context where global warming control, energy conservation and emission reduction are the primary themes of technological development, LED lighting technology contains huge room for innovation, and is a growth point of strategic emerging industries with high growth and high driving force. [0003] From the perspective of national strategic needs, white light LED semiconductor solid-state lighting is a high-tech industry focused on development in my country, which is of great significance...

Claims

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Application Information

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IPC IPC(8): C09K11/64
CPCC09K11/7731
Inventor 李培信杨传仕杨杰刘天凯姚晨赵德强
Owner SHANDONG YICHANG LIGHTING TECH
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