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A kind of mn4+ doped red luminescent material, preparation method and new lighting source

A technology of red luminescent and luminescent materials, which is applied in the direction of luminescent materials, chemical instruments and methods, electrical components, etc., and can solve the problems of insufficient emission wavelength and high cost of raw materials

Active Publication Date: 2015-10-21
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of mn4+ doped red luminescent material, preparation method and new lighting source
  • A kind of mn4+ doped red luminescent material, preparation method and new lighting source
  • A kind of mn4+ doped red luminescent material, preparation method and new lighting source

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preparation example Construction

[0030] The invention also provides a Mn 4+ The preparation method of doped red luminescent material includes the following steps:

[0031] Step 1: According to chemical formula A 14-y B 6 C 10-x O 35 :xMn 4+ ,yM 3+ Weigh the compound containing A, the compound containing B, the compound containing C, the compound containing Mn and the compound containing M, and the mixture is evenly ground and mixed to obtain a mixture;

[0032] Step 2: calcining the mixture obtained in step 1 to obtain phosphors;

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

[0034] The A-containing compound described in step one 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 is more preferably Ca(OH) 2 , Sr(OH) 2 Or Ba(OH...

Embodiment 1

[0049] 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: 9.7: 0.3, corresponding to x = 0.3, y = 0, respectively. Take four raw materials and control the total weight of the raw material mixture to 20 grams. Thoroughly grind and mix, put it in an alumina crucible, put it in a high-temperature furnace, calcine in the air at 1200°C for 3 hours, and take it out when cooled to room temperature. After grinding and dispersing, a kind of Mn is obtained. 4+ Doped red light material whose composition is Ca 14 Zn 6 Al 9.7 Mn 0.3 O 35 .

[0050] figure 1 Mn obtained in 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 and Ca 14 Zn 6 Al 10 O 35 Consistent, proved that Ca was successfully obtained 14 Zn 6 Al 9.7 Mn 0.3 O 35 . figure 2 Mn obtained in Example 1 of the present invention 4+ The lum...

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, weighed separately Take four raw materials and control the total weight of the raw material mixture to 20 grams. Thoroughly grind and mix, put it in an alumina crucible, put it in a high-temperature furnace, calcine in the air at 1150°C for 10 hours, take it out when cooled to room temperature, grind and disperse to obtain a Mn 4+ Doped red light material whose composition is Ca 14 Zn 6 Al 9 MnO 35 . The fluorescence spectrum 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 fluorescent material preparation methods, and specifically relates to a Mn 4+ Doped red luminescent material, preparation method and novel lighting source. Background technique [0002] Sunlight is the most important natural light source. It illuminates the earth and affects human daily life 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 lives. Among them, the new light source white LED has broad application value and huge market prospects due to its small size, energy saving, long life, no pollution and many other advantages. At present, white LEDs have been applied in many fields of LCD backlights, indicator lights, and general lighting, and will replace all kinds of bulbs and fluorescent lamps currently used as a new generation of green lighting sources. However, whi...

Claims

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Application Information

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