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Photoluminescent material

A technology of photoluminescent materials and phosphors, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of uneven mixing of phosphors, uneven light mixing, and reduced uniformity of light output, and achieve enhanced white light color temperature and Color rendering, uniform light mixing effect, and high light uniformity

Inactive Publication Date: 2018-12-07
江苏中曦半导体有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the particle size of the phosphor powder used in general is relatively large, and various phosphors are mixed unevenly, it is easy to have uneven light mixing, and it is impossible to obtain a white LED with the required color temperature and color rendering.
In addition, due to the irregular shape of the phosphor powder, the uniformity of the light emitted by the phosphor powder after excitation will be reduced.

Method used

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  • Photoluminescent material

Examples

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Effect test

Embodiment 1

[0036] First, formulate the mix with Y 2 o 3 : La 3+ , YAG: La 3+ , and phosphor powder mixed aqueous solution of CdSe / ZnS quantum dots, wherein, Y 2 o 3 : La 3+ Yellow light can be emitted after being irradiated by blue light-emitting diodes, YAG: La 3+ After being irradiated by a blue light-emitting diode, it can emit yellow light, while CdSe / ZnS quantum dots can absorb UV light to emit positive white light. After detection by an integrating sphere, the ratio of each phosphor powder is adjusted to obtain a phosphor powder mixed solution with a predetermined color temperature and color rendering property. In this embodiment, the obtained fluorescent powder mixed solution emits white light (color temperature=5500K) after being irradiated by a blue light-emitting diode.

[0037] Next, ammonia water (NH 4 OH), ethanol, and water were mixed and stirred for 5 minutes. Then, tetraethylorthosilicate (TEOS) was added as an initiator, and stirred at constant temperature for 4...

Embodiment 2

[0040] First, formulate Y 2 o 3 : Eu 3+ , Y 2 o 3 : Yb 3+ , Y 2 o 3 : Ce 3+ , and YAG: Ce 3+ Phosphor powder mixed aqueous solution, wherein, Y 2 o 3 : Eu 3+ After being irradiated by a blue light-emitting diode, it can emit red light, Y 2 o 3 : Yb 3+ Can emit green light, Y 2 o 3 : Ce 3+ Can emit blue light, and YAG: Ce 3+ May emit yellow light. After being detected by the integrating sphere, the ratio of each phosphor powder is adjusted to obtain a phosphor powder mixed solution with a predetermined color temperature and color rendering property. In this embodiment, the obtained fluorescent powder mixed solution can emit white light (color temperature=5500K) after being irradiated by a blue light emitting diode.

[0041] Next, ammonia water (NH 4 OH), ethanol and water were mixed and stirred for 5 minutes. Then, TEOS was added as an initiator and stirred at constant temperature for 4 hours. In SiO 2 When the core carrier is about to be condensed and fo...

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Abstract

Provided is a photoluminescent material. The photoluminescent material comprises a core carrier and a phosphor mixture, wherein the phosphor mixture is contained inside the core carrier, and comprisesat least two kinds of phosphor bodies. The phosphor bodies in the photoluminescent material is mixed inside the core carrier, and uniform mixed light can be emitted on the surface of the photoluminescent material.

Description

technical field [0001] The present invention relates to a photoluminescent material, in particular to a photoluminescent material coated with a fluorescent layer on the surface. Mix on the surface of the photoluminescent material to emit a mixed light. Background technique [0002] In recent years, due to the advantages of high luminous efficiency, low power consumption, long service life, and small component size, light-emitting diodes (LEDs) have been widely used in various light-emitting devices and replaced several types of lighting equipment. [0003] However, it is difficult for LEDs to be used in the livelihood lighting market. In addition to the problems of heat dissipation, insufficient brightness, and brightness reduction, LEDs also have the problem of not being able to directly stimulate white light. Therefore, many studies have attempted to develop high-efficiency white LEDs to replace existing lighting equipment. [0004] The current mainstream white light LED...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/78C09K11/80C09K11/88
CPCC09K11/025C09K11/7701C09K11/7706C09K11/883
Inventor 李崇华
Owner 江苏中曦半导体有限公司
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