Cerium and tin co-doped fluorphosphate luminescent material, and preparation method and application of fluorphosphate luminescent

A fluorophosphate, luminescent material technology, applied in luminescent materials, chemical instruments and methods, semiconductor devices, etc., to achieve the effects of high thermal and mechanical stability, good optical transparency, and few radiation transitions

Inactive Publication Date: 2015-02-11
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, cerium-tin co-doped fluorophosphate luminescent materials that can be applied to thin film electroluminescent displays have not been reported yet.

Method used

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  • Cerium and tin co-doped fluorphosphate luminescent material, and preparation method and application of fluorphosphate luminescent
  • Cerium and tin co-doped fluorphosphate luminescent material, and preparation method and application of fluorphosphate luminescent
  • Cerium and tin co-doped fluorphosphate luminescent material, and preparation method and application of fluorphosphate luminescent

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preparation example Construction

[0030] The preparation method of the above-mentioned cerium-tin co-doped fluorophosphate luminescent material comprises the following steps:

[0031] Step S11, according to Me 5-x-y (PO 4 ) 3 F: xCe 3+ ,ySn 4+ The stoichiometric ratio of each element is measured as MeO, MeF 2 ,P 2 o 5 , CeO 2 and SnO 2 The powder is uniformly mixed to obtain a mixed powder, wherein, x is 0.01-0.05, y is 0.01-0.06, Me is magnesium ion, calcium ion, strontium ion or barium ion;

[0032] In this step, preferably, x is 0.03 and y is 0.04.

[0033] Step S12, sintering the mixed powder at 900°C-1300°C for 0.5-3 hours to obtain the chemical formula Me 2 Si 6 N 10 :xSm 3+ Ce-Sn co-doped fluorophosphate luminescent materials.

[0034] In this step, it is preferable to sinter at 1250° C. for 1.5 hours.

[0035] A cerium-tin co-doped fluorophosphate luminescent film according to one embodiment, the chemical formula of the material of the cerium-tin co-doped fluorophosphate luminescent film...

Embodiment 1

[0067] Choose powder with a purity of 99.99%, and mix MgO, MgF 2 , P 2 o 5 , CeO 2 and SnO 2 The powder is mixed evenly according to the molar ratio of 4.93:1.5:0.03:0.04 to obtain a mixed powder, and the mixed powder is sintered at 1250°C for 1.5h to form a ceramic target with a diameter of 50mm and a thickness of 2mm, and the target is placed in a vacuum chamber in vivo. 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 25sccm, the pressure is adjusted to 2.0Pa, the substrate temperature is 500°C, and finally annealed in a 0.01Pa vacuum furnace for 2h, and the annealing temperature is 600°C. Get the chemical formula Mg 4.93 (PO 4 ) 3 F: ...

Embodiment 2

[0073] Choose powder with a purity of 99.99%, and mix MgO, MgF 2 , P 2 o 5 , CeO 2 and SnO 2 The powder is mixed uniformly according to the molar number of 4.98:1.5:0.01:0.01 to obtain a mixed powder, and the mixed powder is sintered at 900°C for 0.5h to form a ceramic target with a diameter of 50mm and a thickness of 2mm, and the target is placed in a vacuum chamber in vivo. 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 10sccm, the pressure is adjusted to 0.2Pa, the substrate temperature is 250°C, and finally annealed in a 0.01Pa vacuum furnace for 1h, and the annealing temperature is 500°C. Get the chemical formula Mg 4.98 (PO ...

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Abstract

The invention discloses a cerium and tin co-doped fluorphosphate luminescent material. The chemical formula of the luminescent material is Me5-x-y(PO4)3F: x Ce<3+>, ySn<4+>, wherein x represents 0.01-0.05, y represents 0.01-0.06, and the Me represents magnesium ions, calcium ions, strontium ions or barium ions. In an electroluminescent spectrum (EL) of a luminescent film made from the cerium and tin co-doped fluorphosphate luminescent material, quite high luminescent peaks exist in a 450nm wavelength region and a 480nm wavelength region both, so the cerium and tin co-doped fluorphosphate luminescent material can be applied to a film electroluminescent member. The invention also provides a preparation method and an application of the cerium and tin co-doped fluorphosphate luminescent material.

Description

【Technical field】 [0001] The invention relates to a cerium-tin co-doped fluorophosphate luminescent material, a preparation method thereof, a cerium-tin co-doped fluorophosphate luminescent film, a preparation method thereof, a thin film electroluminescence device and a preparation method thereof. 【Background technique】 [0002] Thin film electroluminescent devices (TFELD) have attracted widespread attention and developed rapidly due to their advantages such as active light emission, full solidification, 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, cerium-tin co-doped fluorophosphate luminescent materials that can be applied to thin-film electroluminescent displays have not been reported yet. 【Content of invention】 [0003] Based on this, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/72C09K11/73H01L33/50
Inventor 周明杰陈吉星王平钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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