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Fluorine/copper-codoped alkaline earth sulfide light-emitting material, and preparation method and application thereof

A luminescent material and double-doping technology, applied in luminescent materials, chemical instruments and methods, electroluminescent light sources, etc.

Inactive Publication Date: 2015-03-25
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the fluorine-copper double-doped alkaline earth sulfide luminescent material that can be applied to thin film electroluminescent displays has not been reported yet.

Method used

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  • Fluorine/copper-codoped alkaline earth sulfide light-emitting material, and preparation method and application thereof
  • Fluorine/copper-codoped alkaline earth sulfide light-emitting material, and preparation method and application thereof
  • Fluorine/copper-codoped alkaline earth sulfide light-emitting material, and preparation method and application thereof

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preparation example Construction

[0032] The preparation method of the above-mentioned fluorine-copper double-doped alkaline earth sulfide luminescent material comprises the following steps:

[0033] Step S11, according to MeS: xCu 2+ , yF - The stoichiometric ratio of each element weighs MeS, CuS and MeF 2 Powder, wherein x is 0.01-0.05, y is 0.01-0.06, and Me is zinc ion, magnesium ion, calcium ion, strontium ion or barium ion.

[0034] In this step, preferably, x is 0.02 and y is 0.03.

[0035] Step S12, sintering the mixed powder at 900°C-1300°C for 0.5-5 hours to obtain fluorine-copper double-doped alkaline earth sulfide luminescent material, whose chemical formula is MeS:xCu 2+ , yF - , wherein, x is 0.01-0.05, and Me is zinc ion, magnesium ion, calcium ion, strontium ion or barium ion.

[0036] In this step, it is preferable to sinter at 1250° C. for 3 hours.

[0037] A copper fluoride double-doped alkaline earth sulfide luminescent thin film according to an embodiment, the material of the copper ...

Embodiment 1

[0063] Choose powder with a purity of 99.99%, and mix MgS, CuS and MgF 2 After uniform mixing according to the molar ratio of 1:0.02:0.03, sinter 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 cavity. 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 is oxygen, the flow rate of the working gas is 20sccm, the pressure is adjusted to 3Pa, the substrate temperature is 500°C, and the laser energy is 150W. The chemical formula of the obtained sample is MgS: ​​0.02Cu 2+ , 0.03F - luminescent thin film, and then vapor-deposit a layer of Ag on the luminescent thin film as the cathode.

[0064] The general ...

Embodiment 2

[0069] Choose powder with a purity of 99.99%, and mix MgS, CuS and MgF 2 After uniform mixing according to the molar ratio of 1:0.01:0.01, sinter 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 cavity. 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 is oxygen, the flow rate of the working gas is 10sccm, the pressure is adjusted to 0.5Pa, the substrate temperature is 250°C, and the laser energy is 80W. The chemical formula of the obtained sample is MgS: ​​0.01Cu 2+ , 0.01F- luminescent film, and then vapor-deposit a layer of Ag on the luminescent film as the cathode.

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Abstract

The invention provides a fluorine / copper-codoped alkaline earth sulfide light-emitting material of which the chemical formula is MeS:xCu<2+>,yF<->, wherein x is 0.01-0.05, y is 0.01-0.06, and Me is zinc ion, magnesium ion, calcium ion, strontium ion or barium ion. In the electroluminescent spectrum (EL) of the light-emitting film prepared from the fluorine / copper-codoped alkaline earth sulfide light-emitting material, the 430nm-wavelength region has strong light-emitting peak, and thus, the fluorine / copper-codoped alkaline earth sulfide light-emitting material can be applied to film electroluminescent displays. The invention also provides a preparation method and application of the fluorine / copper-codoped alkaline earth sulfide light-emitting material.

Description

【Technical field】 [0001] The invention relates to a fluorine-copper double-doped alkaline earth sulfide luminescent material, a preparation method thereof, a fluorine-copper double-doped alkaline earth sulfide luminescent film, a preparation method thereof, a thin-film electroluminescence 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, the fluorine-copper double-doped alkaline-earth sulfide light-emitting materials that can be applied to thin-film electroluminescent displays have not been reported yet. 【Con...

Claims

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Application Information

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IPC IPC(8): C09K11/56H05B33/14
Inventor 周明杰陈吉星王平钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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