Single-matrix white fluorescent powder, manufacturing method thereof and light emitting device manufactured thereby

A manufacturing method and a technology of light-emitting devices, which are applied in the direction of light-emitting materials, semiconductor devices, chemical instruments and methods, etc., can solve the problems of few types of systems, difficulty in obtaining low color temperature, etc., achieve large composition selection and adjustment room, and facilitate large-scale production , the effect of stable performance

Inactive Publication Date: 2010-11-10
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, judging from the types of phosphors that have been released so far, there are few types of systems, it is difficult to obtain low color temperature, and there is room for further improvement of luminous intensity.

Method used

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  • Single-matrix white fluorescent powder, manufacturing method thereof and light emitting device manufactured thereby
  • Single-matrix white fluorescent powder, manufacturing method thereof and light emitting device manufactured thereby
  • Single-matrix white fluorescent powder, manufacturing method thereof and light emitting device manufactured thereby

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

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Abstract

The invention relates to a single-matrix white fluorescent powder, a manufacturing method thereof and a light emitting device manufactured thereby. The chemical formula of the involved fluorescent powder is Ba(3-m-n-a)AaLu2-bRbSi3O12:mEu2+,nMn2+. The method comprises the following steps of: mixing and uniformly grinding all raw materials; roasting the mixture in reducing atmosphere at a high temperature; and performing post-processing to obtain the fluorescent powder. The fluorescent power has the characteristics of high chemical stability, super-wide excitation waveband, adjustable emission wavelength as required, high luminous intensity and the like and has the advantages of simple method, no pollution and low cost. A white LED and a warm tone light source can be manufactured by using ultraviolet light or a ultraviolet LED chip and the fluorescent powder of the invention.

Description

technical field [0001] The invention relates to a single-matrix white-light fluorescent powder suitable for excitation by ultraviolet or violet LEDs, a manufacturing method thereof, and a light-emitting device made therefrom. technical background [0002] As a new type of lighting device, white LED has high efficiency and energy saving (the same lighting effect is more than 80% energy-saving than traditional light sources), long life (up to 50,000 hours), no mercury and no pollution, and many other light sources can be flat packaged. Compared with the advantages, it has been widely used in the fields of indicator lights, signal lights, mobile communication equipment, etc., and is expected to replace incandescent lamps and fluorescent lamps and enter the lighting field. [0003] According to the way of white light generation, white light LED can be divided into three types: phosphor conversion type; multi-chip combination type; single-chip multi-quantum well type. At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/79H01L33/50
CPCY02B20/181Y02B20/00
Inventor 叶信宇廖春发杨幼明聂华平张贵富
Owner JIANGXI UNIV OF SCI & TECH
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