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A phosphor material with adjustable luminous color and preparation method thereof

A technology of fluorescent materials and luminescent colors, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of high color temperature and low color rendering of white LEDs

Inactive Publication Date: 2015-10-07
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a phosphor material with adjustable luminous color, which solves the problem of high color temperature and low color rendering of white LEDs caused by the addition of yellow phosphor powder to blue light chips

Method used

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  • A phosphor material with adjustable luminous color and preparation method thereof
  • A phosphor material with adjustable luminous color and preparation method thereof
  • A phosphor material with adjustable luminous color and preparation method thereof

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preparation example Construction

[0023] Another object of the present invention is to provide a method for preparing phosphor materials with tunable emission colors, but the present invention is not limited thereto. The method includes the following steps:

[0024] (1) According to the expression MLn 2 Si 3 o 10 :mBi 3+ , nEu 3+ The stoichiometric ratio of each substance in the formula is taken by weighing the elemental substances, oxides, halides and corresponding salts of Zn, Mg, Ca, Sr, Ba, La, Y, Si, Eu, Bi and corresponding salts respectively, where 0≤m ≤0.1,0≤m≤0.22.

[0025] The M is one or more of Zn, Mg, Ca, Sr and Ba, and Ln is one or more of Y and La;

[0026] (2) Mix the above-mentioned raw materials, and after fully grinding and mixing them in an agate mortar, put them into a corundum crucible, cover them, and wait for a high-temperature solid-phase reaction;

[0027] (3) Sintering the corundum crucible filled with mixed raw materials in a high-temperature muffle furnace at a sintering temp...

Embodiment 1

[0032] (1) According to the expression MLn 2 Si 3 o 10 :mBi 3+ , nEu 3+ , take M=Mg, Ln=Y, m=0.02, n=0.14, weigh MgO0.2015 grams, Y 2 o 3 1.1290 g, SiO 2 0.9012 g, Bi 2 o 3 0.0233, Eu 2 o 3 0.1232g, put it into an agate mortar and grind it thoroughly, put it into a corundum crucible, cover it, place it in a high-temperature furnace, heat it to 1250°C, keep the temperature constant for 6 hours, cool it naturally, take it out and grind it to get white MgY 2 Si 3 o 10 :0.02Bi 3+ ,0.14Eu 3+ phosphor material.

[0033] (2) combine figure 1 To illustrate embodiment 1, figure 1 It is the X-ray color atlas of the color-tunable phosphor material of Example 1 of the present invention, by figure 1 It can be seen that the diffraction peak position of the fluorescent material of the present invention is consistent with ISCD240470 in the crystallographic database, indicating the same structure.

[0034] (3) combine figure 2 To illustrate embodiment 1, figure 2 is the e...

Embodiment 2

[0036] (1) According to the expression MLn 2 Si 3 o 10 :mBi 3+ , nEu 3+ , take M=Ba, Ln=Y, m=0, n=0.06, weigh 0.2015 grams of MgO, Y 2 o 3 1.1290 g, SiO 2 0.9012 g, Eu 2 o 30.0528g, put it into an agate mortar and grind it thoroughly, put it into a corundum crucible, cover it, place it in a high-temperature furnace, heat it to 1350°C, keep the temperature constant for 8 hours, cool it naturally, take it out and grind it to get white BaY 2 Si 3 o 10 :0.06Eu 3+ phosphor material.

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Abstract

The invention discloses a fluorescent powder material with an adjustable emitting color and a preparation method thereof. The technical scheme adopted by the invention is as follows: the expression of the fluorescent material is MLn2Si3O10:mBi<3+>, nEu<3+>. The fluorescent powder material has the beneficial effects that the fluorescent powder material with the adjustable emitting color can be effectively stimulated by an ultraviolet light of 330-410nm. The emission spectrum of the fluorescent powder material can be effectively controlled by controlling the concentration of the Bi<3+> emitted by a doped blue light broadband and the Eu<3+> emitted by a red light sharp line, and red, blue and green contrast regulation of the emission spectrum is achieved, so as to adjust light of the emitting color of the fluorescent powder material from a blue light area to a red light area by virtue of a white light area.

Description

technical field [0001] The invention relates to a phosphor material with adjustable luminescent color and a preparation method thereof, belonging to the technical field of luminescent materials. Background technique [0002] Compared with traditional lighting sources, white LEDs are considered the fourth generation of light sources due to their advantages of energy saving, environmental protection, safety, long life, zero noise, no radiation, low voltage start-up, easy installation, low power consumption, high brightness, and easy shockproof maintenance. . [0003] There are two main ways to achieve white LED lighting: the first is to combine red, green, and blue LED chips to produce white light; the second is to combine LED chip light with other light conversion materials such as phosphors to produce white light. The landscape decoration industry mostly adopts the first method, and the lighting industry mostly uses phosphor powder conversion technology. At present, the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/79
Inventor 金叶周虹鹏蒋明松
Owner CHONGQING UNIV OF TECH
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