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Cerium-doped alkaline earth gallate luminescent material as well as preparation method and application thereof

A technology of luminescent materials and gallates, applied in the directions of luminescent materials, electroluminescent light sources, chemical instruments and methods, 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, cerium-doped alkaline earth gallate luminescent materials that can be applied to thin-film electroluminescent displays have not been reported yet.

Method used

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  • Cerium-doped alkaline earth gallate luminescent material as well as preparation method and application thereof
  • Cerium-doped alkaline earth gallate luminescent material as well as preparation method and application thereof
  • Cerium-doped alkaline earth gallate luminescent material as well as preparation method and application thereof

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preparation example Construction

[0032] The method for preparing the cerium-doped alkaline earth gallate luminescent material includes the following steps:

[0033] Step S11, according to MeGa 2 O 4 : XCe 3+ The stoichiometric ratio of each element is called MeO, Ga 2 O 3 And CeO 2 Powder, where x is 0.01 to 0.05.

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

[0035] Step S12, sintering the mixed homogeneous powder at 900°C to 1300°C for 0.5 hours to 5 hours to obtain a cerium-doped alkaline earth gallate luminescent material, the chemical formula of which is MeGa 2 O 4 : XCe 3+ , Where 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] According to an embodiment of the cerium-doped alkaline earth gallate luminescent film, the chemical general formula of the material of the cerium-doped alkaline earth gallate luminescent film is MeGa 2 O 4 : XCe 3+ , Where x is 0.01-0.05, and Me is zinc ion, magn...

Embodiment 1

[0063] Choose powder with a purity of 99.99%, and mix MgO, Ga 2 O 3 And CeO 2 According to the number of moles of 1mmol, 1mmol and 0.03mmol are uniformly mixed and then sintered at 1250°C into a ceramic target with a diameter of 50mm and a thickness of 2mm, and the target is placed in a vacuum chamber. Then, the glass substrate with ITO is ultrasonically cleaned with acetone, absolute ethanol and deionized water successively, and treated with oxygen plasma, and placed in a vacuum chamber. Set the distance between the target and the substrate to 60 mm. Use mechanical pump and molecular pump to pump the vacuum of the cavity to 5.0×10 -4 Pa, the working gas is oxygen, the flow of the working gas is 20 sccm, the pressure is adjusted to 3 Pa, the substrate temperature is 500° C., and the laser energy is 150 W. The chemical formula of the sample is M g Ga 2 O 4 : 0.03Ce 3+ Then, a layer of Ag is deposited on the light-emitting film as a cathode.

[0064] The chemical formula of the ce...

Embodiment 2

[0069] Choose powder with a purity of 99.99%, and mix MgO, Ga 2 O 3 And CeO 2 According to the number of moles of 1 mmol, 1 mmol and 0.01 mmol are uniformly mixed, then sintered at 900° C. into a ceramic target with a diameter of 50 mm and a thickness of 2 mm, and the target is placed in a vacuum chamber. Then, the glass substrate with ITO is ultrasonically cleaned with acetone, absolute ethanol and deionized water successively, and treated with oxygen plasma, and placed in a vacuum chamber. Set the distance between the target and the substrate to 45 mm. Use mechanical pump and molecular pump to pump the vacuum of the cavity to 1.0×10 -3 Pa, the working gas is oxygen, the flow of the working gas is 10 sccm, the pressure is adjusted to 0.5 Pa, the substrate temperature is 250° C., and the laser energy is 80 W. The chemical formula of the obtained sample is MgGa 2 O 4 :0.01Ce 3+ Then, a layer of Ag is deposited on the light-emitting film as a cathode.

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Abstract

The invention relates to a cerium-doped alkaline earth gallate luminescent material. The cerium-doped alkaline earth gallate luminescent material has the chemical formula represented by MeGa2O4:xCe<3+>, wherein x is 0.01-0.05 and Me is zinc ion, magnesium ion, calcium ion, strontium ion or barium ion. In electroluminescent spectra (EL) of a luminescent film prepared from the cerium-doped alkaline earth gallate luminescent material, a strong luminescent peak is present at 610nm wavelength region and can be applied in thin film electroluminescent displays. The invention also provides a preparation method and an application of the cerium-doped alkaline earth gallate luminescent material.

Description

【Technical Field】 [0001] The invention relates to a cerium-doped alkaline earth gallate luminescent material, a preparation method thereof, a cerium-doped alkaline earth gallate luminescent film, a preparation method thereof, a thin-film electroluminescent device and a preparation method thereof. 【Background technique】 [0002] Thin film electroluminescence displays (TFELD) have attracted widespread attention due to their active luminescence, full solidification, impact resistance, fast response, large viewing angle, wide applicable temperature, and simple process, etc., and they are developing rapidly. At present, researching color and full-color TFELD and developing multi-band luminescent materials are the development direction of this subject. However, cerium-doped alkaline earth gallate luminescent materials that can be applied to thin-film electroluminescence displays have not yet been reported. [Content of the invention] [0003] Based on this, it is necessary to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/62H05B33/14H05B33/10C23C14/28C23C14/06
Inventor 周明杰陈吉星王平钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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