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Europium-terbium co-doped zirconium phosphate luminescent material as well as preparation method and application thereof

A technology of zirconium phosphate and luminescent materials, applied in luminescent materials, chemical instruments and methods, semiconductor devices, etc.

Inactive Publication Date: 2013-09-11
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no report has been found on the europium and terbium co-doped zirconium phosphate luminescent materials that can be applied to thin film electroluminescent displays.

Method used

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  • Europium-terbium co-doped zirconium phosphate luminescent material as well as preparation method and application thereof
  • Europium-terbium co-doped zirconium phosphate luminescent material as well as preparation method and application thereof
  • Europium-terbium co-doped zirconium phosphate luminescent material as well as preparation method and application thereof

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Experimental program
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preparation example Construction

[0033] The preparation method of the above-mentioned europium-terbium co-doped zirconium phosphate luminescent material comprises the following steps:

[0034] Step S11, according to MZr 4-x-y P 6 o24 :xEu 3+ , yTb 3+ The stoichiometric ratio of each element is weighed as MO, P 2 o 5 , Eu 2 o 3 and Tb 4 o 7 Powder, where M is Ca, Ba or Sr, 0.02≤x≤0.1, 0.01≤y≤0.04.

[0035] In this step, preferably, x is 0.06 and y is 0.02.

[0036] Step S12, sintering the mixed powder at 900°C-1300°C for 0.5-5 hours to obtain the target product.

[0037] In this step, it is preferable to sinter at 1250° C. for 3 hours.

[0038] One embodiment of the europium-terbium co-doped zirconium phosphate light-emitting thin film, the general chemical formula of the material of the europium-terbium co-doped zirconium phosphate light-emitting thin film is MZr 4-x-y P 6 o 24 :xEu 3+ , yTb 3+ , where MZr 4 P 6 o 24 is the matrix, Eu and Tb elements are active elements, M is Ca, Ba or Sr, ...

Embodiment 1

[0068] Use powder with a purity of 99.99%, mix 1mol of CaO, 3.92mol of ZrO 2 , 3mol of P 2 o 5 , 0.03mol Eu 2 o 3 and 0.005mol of Tb 4 o 7 , after uniform mixing, sintered at 1250°C to form a ceramic target with a diameter of 50mm and a thickness of 2mm, and put the target into a vacuum chamber. Then, the glass substrate with ITO was ultrasonically cleaned with acetone, absolute ethanol and deionized water successively, treated with oxygen plasma, and placed in a vacuum chamber. The distance between the target and the substrate is set to 60mm. Use a mechanical pump and a molecular pump to pump the vacuum of the cavity to 5.0×10 -4 Pa, the working gas flow rate of argon is 25 sccm, the pressure is adjusted to 2.0 Pa, and the substrate temperature is 500°C. The obtained sample was annealed in a 0.01Pa vacuum furnace for 2h at an annealing temperature of 600°C, and the chemical formula was CaZr 3.92 P 6 o 24 :0.06Eu 3+ , 0.02Tb 3+ luminescent thin film, and then vapo...

Embodiment 2

[0073]Use powder with a purity of 99.99%, mix 1mol of CaO, 3.97mol of ZrO 2 , 3mol of P 2 o 5 , 0.01mol Eu 2 o 3 and 0.0025mol of Tb 4 o 7 , after uniform mixing, sintering at 900°C to form a ceramic target with a diameter of 50mm and a thickness of 2mm, and put the target into a vacuum chamber. Then, the glass substrate with ITO was ultrasonically cleaned with acetone, absolute ethanol and deionized water successively, treated with oxygen plasma, and placed in a vacuum chamber. The distance between the target and the substrate was set to 45 mm. Use a mechanical pump and a molecular pump to evacuate the vacuum of the chamber to 1.0×10 -3 Pa, the working gas flow rate of argon is 10 sccm, the pressure is adjusted to 0.2 Pa, and the substrate temperature is 250°C. The obtained samples were annealed in a 0.01 Pa vacuum furnace for 1 h at an annealing temperature of 500 °C. Get the chemical formula CaZr 3.97 P 6 o 24 :0.02Eu 3+ , 0.01Tb 3+ luminescent thin film, and ...

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Abstract

The invention relates to a europium-terbium co-doped zirconium phosphate luminescent material. The europium-terbium co-doped zirconium phosphate luminescent material has a chemical formula of MZr4-x-yP6O24:xEu<3+>, yTb<3+>, wherein M is Ca, Ba or Sr, x is more than or equal to 0.02 and less than or equal to 0.1, and y is more than or equal to 0.01 and less than or equal to 0.04. The electroluminescent spectrum (EL) of a luminescent film prepared from the europium-terbium co-doped zirconium phosphate luminescent material has very strong photoluminescence peaks in areas of which the wavelengths are 510nm and 610nm, and the luminescent film can be applied to film electroluminescent displays. The invention also provides a preparation method and application of the europium-terbium co-doped zirconium phosphate luminescent material.

Description

【Technical field】 [0001] The invention relates to a europium-terbium co-doped zirconium phosphate luminescent material, a preparation method thereof, a europium-terbium co-doped zirconium phosphate luminescent film, a preparation method thereof, a thin film electroluminescent device and a preparation method thereof. 【Background technique】 [0002] Thin film electroluminescent display (TFELD) has attracted widespread attention and developed rapidly due to its advantages such as active light emission, full solid state, impact resistance, fast response, large viewing angle, wide application temperature, and simple process. At present, the research on color and even full-color TFELD and the development of multi-band luminescent materials are the development direction of this subject. However, there is no report on the europium and terbium co-doped zirconium phosphate luminescent materials that can be applied to thin film electroluminescent displays. 【Content of invention】 [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/71H01L33/26H01L33/00
Inventor 周明杰王平陈吉星黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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