Mn<4+>-doped red light-emitting material and preparation method thereof as well as novel lighting source

A technology of red light-emitting and light-emitting materials, applied in the fields of light-emitting materials, chemical instruments and methods, electrical components, etc., can solve the problems that the emission wavelength cannot meet the requirements and the cost of raw materials is high

Active Publication Date: 2014-10-08
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a Mn 4+ Doped red luminescent material, preparation method and new lighting source

Method used

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  • Mn&lt;4+&gt;-doped red light-emitting material and preparation method thereof as well as novel lighting source
  • Mn&lt;4+&gt;-doped red light-emitting material and preparation method thereof as well as novel lighting source
  • Mn&lt;4+&gt;-doped red light-emitting material and preparation method thereof as well as novel lighting source

Examples

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preparation example Construction

[0030] The present invention also provides a kind of Mn 4+ A method for preparing a doped red luminescent material, comprising the steps of:

[0031] Step 1: according to chemical formula A 14-y B 6 C 10-x o 35 :xMn 4+ ,yM 3+ Stoichiometric ratio, weigh the compound containing A, the compound containing B, the compound containing C, the compound containing Mn and the compound containing M, grind and mix uniformly to obtain the mixture;

[0032] Step 2: roasting the mixture obtained in Step 1 to obtain phosphor;

[0033] Step 3: Grinding and dispersing the phosphor powder obtained in Step 2 to obtain Mn 4+ Doped red luminescent material.

[0034] The A-containing compound described in Step 1 of the present invention is preferably an A-containing oxide, nitrate, hydroxide, halide or carbonate; the A-containing oxide is more preferably CaO, SrO or BaO; The nitrate containing A is more preferably Ca(NO 3 ) 2 , Sr(NO 3 ) 2 or Ba(NO 3 ) 2 ; The hydroxide containing A ...

Embodiment 1

[0049] Choose calcium carbonate, aluminum oxide, zinc oxide, and manganese carbonate as starting materials, according to the molar ratio of each element Ca:Zn:Al:Mn=14:6:9.7:0.3, corresponding to x=0.3, y=0, weighed respectively Get four kinds of raw materials, control raw material mixture gross weight to be 20 grams. Carry out thorough grinding and mixing, put it into an alumina crucible, put it into a high-temperature furnace, and bake it in the air at 1200 ° C for 3 hours, take it out when it is cooled to room temperature, and obtain a kind of Mn after grinding and dispersing. 4+ Doped red light material, its composition is Ca 14 Zn 6 al 9.7 mn 0.3 o 35 .

[0050] figure 1 For the Mn obtained by Example 1 of the present invention 4+ The XRD pattern of the doped red light material, as can be seen from the figure, the spectrum is consistent with Ca 14 Zn 6 al 10 o 35 Consistent, proving that the Ca 14 Zn 6 al 9.7 mn 0.3 o 35 . figure 2 For the Mn obtained by...

Embodiment 2

[0052] Select calcium carbonate, aluminum oxide, zinc oxide, and manganese carbonate as starting materials, according to the molar ratio of each element Ca:Zn:Al:Mn=14:6:9:1, corresponding to x=1, y=0, respectively weighed Get four kinds of raw materials, control raw material mixture gross weight to be 20 grams. Carry out thorough grinding and mixing, put it into an alumina crucible, put it into a high-temperature furnace, and bake it in the air at 1150°C for 10 hours, take it out when it is cooled to room temperature, and obtain a kind of Mn after grinding and dispersing. 4+ Doped red light material, its composition is Ca 14 Zn 6 al 9 MnO 35 . The fluorescent spectral properties of the red luminescent material are similar to those in Example 1.

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Abstract

The invention discloses a Mn<4+>-doped red light-emitting material and a preparation method thereof as well as a novel lighting source, and belongs to the field of a preparation method of fluorescent materials. The light-emitting material has a structural formula A[14-y]B6C[10-x]O35:xMn<4+>,yM<3+>, wherein in the formula, A represents one or two of alkaline-earth metal Ca, Sr or Ba; B represents one or two of Zn and Mg; C represents one or more of Al, Ga or In; M<3+> represents Sc, Y, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu; x is greater than or equal to 0.005 and less than or equal to 1; y is greater than or equal to 0 and less than or equal to 2. The invention further provides the preparation method of the Mn<4+>-doped red light-emitting material and the obtained novel lighting source. The Mn<4+>-doped red light-emitting material can be used for emitting red light in a wavelength range within 650nm to 750nm when being excited by excitation light sources such as ultraviolet light, near ultraviolet light or blue light.

Description

technical field [0001] The invention belongs to the field of preparation methods of fluorescent materials, in particular to a Mn 4+ Doped red luminescent material, preparation method and new lighting source. Background technique [0002] Sunlight is the most important natural light source. It shines on the earth and affects the daily life of human beings and the growth and reproduction of animals and plants. In addition to sunlight, there are various other light sources, such as incandescent lamps, fluorescent lamps, and white LEDs used in our daily life. Among them, the new light source white LED has broad application value and huge market prospect due to its advantages of small size, energy saving, long life and no pollution. At present, white LEDs have been used in many fields such as LCD backlight, indicator lights, and general lighting, and will replace various bulbs and fluorescent lamps currently used as a new generation of green lighting sources. However, compared ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64H01L33/50
Inventor 尤洪鹏吕伟
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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