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Aluminate red luminescent material and preparation process thereof

A red light-emitting, aluminate technology, applied in the direction of light-emitting materials, chemical instruments and methods, can solve the problems of complex preparation process, high product cost, application limitations, etc., to achieve good light-emitting performance, fast reaction speed and simple method. Effect

Inactive Publication Date: 2007-07-18
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above two patents are only for Y 2 o 3 An Extension of Matrix Red Luminescent Materials
Due to its complicated preparation process and the Y used 2 o 3 The large quantity leads to high product cost and limits its application

Method used

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  • Aluminate red luminescent material and preparation process thereof
  • Aluminate red luminescent material and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The chemical composition expression of aluminate red luminescent material is Mg 0.7 Ca 0.3 Al 2 o 4 :Eu 0.01 .

[0016] The preparation method is as follows:

[0017] 1) Take each nitrate by weight as follows:

[0018] Raw material Moles Weight (g) Molecular weight

[0019] Magnesium nitrate Mg(NO 3 ) 2 ·6H 2 O 0.7 178.1 254.41

[0020] Calcium nitrate Ca(NO 3 ) 2 4H 2 O 0.3 70.8 236.15

[0021] Aluminum nitrate Al(NO 3 ) 3 9H 2 O 2 750.3 375.13

[0022] Europium nitrate Eu(NO 3 ) 3 0.01 3.4 337.97

[0023] 2) Add 300 grams of urea to the raw material described in 1), and then add 650 grams of water, and fully stir at a temperature of 60° C. to obtain a precursor.

[0024] 3) Reacting the precursor obtained in 2) at a temperature of 500° C. for 30 minutes to obtain a reaction product.

[0025] 4) The reaction product obtained in 3) is taken out and cooled to room temperature, sieved with a 200-mesh sieve, and the sieve is taken to obtain th...

Embodiment 2

[0027] The chemical composition expression of aluminate red luminescent material is Mg 0.9 Ca 0.1 Al 2 o 4 :Eu 0.01 Dy 0.01 .

[0028] The preparation method is as follows:

[0029] 1) Take each nitrate by weight as follows:

[0030] Raw material Moles Weight (g) Molecular weight

[0031] Magnesium nitrate Mg(NO 3 ) 2 ·6H 2 O 0.9 229.0 254.41

[0032] Calcium nitrate Ca(NO 3 ) 2 4H 2 O 0.1 23.6 236.15

[0033] Aluminum nitrate Al(NO 3 ) 3 9H 2 O 2 750.3 375.13

[0034] Europium nitrate Eu(NO 3 ) 3 0.01 3.4 337.97

[0035] Dysprosium nitrate Dy(NO 3 ) 3 0.01 3.5 348.51

[0036] 2) Add 500 grams of urea to the raw material of 1), and then add 1500 grams of water, and stir thoroughly at a temperature of 50° C. to obtain a precursor.

[0037] 3) Reacting the precursor obtained in 2) at a temperature of 600° C. for 20 minutes to obtain a reaction product.

[0038] 4) The reaction product obtained in 3) is taken out and cooled to room te...

Embodiment 3

[0040] The chemical composition expression of aluminate red luminescent material is Mg 0.8 Ca 0.2 Al 2 o 4 :Eu 0.01 Ce 0.005 .

[0041] The preparation method is as follows:

[0042] 1) Take each nitrate by weight as follows:

[0043] Raw material Moles Weight (g) Molecular weight

[0044] Magnesium nitrate Mg(NO 3 ) 2 ·6H 2 O 0.8 203.5 254.41

[0045] Calcium nitrate Ca(NO 3 ) 2 4H 2O 0.2 47.2 236.15

[0046] Aluminum nitrate Al(NO 3 ) 3 9H 2 O 2 750.3 375.13

[0047] Europium nitrate Eu(NO 3 ) 3 0.01 3.4 337.97

[0048] Cerium nitrate Ce(NO 3 ) 2 ·6H 2 O 0.005 1.9 372.13

[0049] 2) Add 600 grams of urea to the raw material of 1), and then add 1500 grams of water, and stir thoroughly at a temperature of 70° C. to obtain a precursor.

[0050] 3) Reacting the precursor obtained in 2) at a temperature of 700° C. for 10 minutes to obtain a reaction product.

[0051] 4) The reaction product obtained in 3) is taken out and cooled to room temperatu...

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Abstract

The present invention provides one kind of red light emitting aluminate material and its preparation process. The red light emitting aluminate material has chemical formula of MgxCa1-xAl2O4:Ry, where, x as content of Mg is 0.7-0.9, R is at least one of RE elements Eu, Dy, Nd, Ce and Ho, and y as content of RE element is 0.01-0.04. It is prepared through mixing the materials, assistant and water; heating the mixture in a high temperature furnace to react; cooling and grading. It has high light emitting performance and may be used widely in electronics, information treatment, energy source and other fields.

Description

technical field [0001] The invention relates to an inorganic rare earth luminescent material and a preparation method thereof, in particular to an aluminate red luminescent material and a preparation method thereof. Background technique [0002] In recent years, rare earth luminescent materials with stable physical and chemical properties and no pollution have become a new direction for the development of new luminescent materials. Although rare earth luminescent materials are rich in luminescent colors, there are fewer varieties of rare earth red luminescent materials, mainly Y 2 o 3 system-based. For example, Chinese patent CN1453330 discloses a red long-time luminescent material containing rare earth oxygen group compound and its preparation method. The structural formula of the material is R x o 2 L: R'y, Mz, wherein, R is at least one of Y, Gd, Lu, La and Yb; L is S or O; R' is Eu, Dy, Pr, Tb, Sm, Ce, Nd, At least one of Ho, Er and Tm; M is at least one of Mg, Ti, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/80
Inventor 邱克辉李峻峰张佩聪邓春林
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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