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Manganese and titanium co-doped fluorine magnesium germanate luminescent material and preparation method and application thereof

A technology of fluoromagnesium germanate and luminescent materials, applied in luminescent materials, electroluminescent light sources, chemical instruments and methods, etc.

Active Publication Date: 2013-12-04
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, manganese-titanium co-doped fluoromagnesium germanate luminescent materials that can be applied to thin film electroluminescent displays have not been reported yet.

Method used

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  • Manganese and titanium co-doped fluorine magnesium germanate luminescent material and preparation method and application thereof
  • Manganese and titanium co-doped fluorine magnesium germanate luminescent material and preparation method and application thereof
  • Manganese and titanium co-doped fluorine magnesium germanate luminescent material and preparation method and application thereof

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preparation example Construction

[0033] The preparation method of the manganese-titanium co-doped fluoromagnesium germanate luminescent material comprises the following steps:

[0034] Step S11, according to aMgO-bMgF 2 -cGeO 2 :dMn 4+ ,eTi 4+ The stoichiometric ratio of each element is weighed MgO, MgF 2 、GeO 2 , MnO 2 and TiO 2 Powder, wherein a is 1-6, b is 0.05-2, c is 0.5-3, d is 0.01-0.05, and e is 0.005-0.03.

[0035] In this step, preferably, a is 3.5, b is 0.5, c is 1, d is 0.03, and e is 0.01.

[0036] Step S12, sintering the mixed powder at 900°C-1300°C for 0.5-5 hours to obtain manganese-titanium co-doped fluoromagnesium germanate luminescent material, whose chemical formula is aMgO-bMgF 2 -cGeO 2 :dMn 4+ ,eTi 4+ , where aMgO-bMgF 2 -cGeO 2 is a matrix, manganese and titanium are active elements, and a is 1-6, b is 0.05-2, c is 0.5-3, d is 0.01-0.05, and e is 0.005-0.03.

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

[0038] A manganese-titanium co-doped...

Embodiment 1

[0069] MgO, MgF 2 , GeO 2 , MnO 2 and TiO 2 The molar ratio of the powder is 3.5mmol, 0.5mmol, 1mmol, 0.03mmol, 0.01mmol. After uniform mixing, it is sintered at 1250°C to form a ceramic target with a diameter of 50mm and a thickness of 2mm, and the target is placed in a vacuum inside the 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 -4Pa, the working gas flow rate of argon is 25sccm, the pressure is adjusted to 2.0Pa, the substrate temperature is 500°C, the obtained sample is annealed in a 0.01Pa vacuum furnace for 2h, and the annealing temperature is 600°C. The chemical formula is 3.5MgO-0.5MgF 2 -GeO 2 :0.03Mn 4+ , 0.01Ti 4+ luminescent thin film, and then vapor-deposi...

Embodiment 2

[0075] MgO, MgF 2 , GeO 2 , MnO 2 and TiO 2 The molar ratio of the powder is 1mmol, 0.05mmol, 3mmol, 0.01mmol, 0.005mmol. After uniform mixing, it is sintered at 900°C 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, the obtained sample is annealed in a 0.01Pa vacuum furnace for 1h, and the annealing temperature is 500°C. The chemical formula is MgO-0.05MgF 2 -3GeO 2 :0.01Mn 4+ , 0.005Ti 4+ luminescent thin film, and then vapor-d...

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Abstract

A manganese and titanium co-doped fluorine magnesium germanate luminescent material has a chemical formula of aMgO-bMgF2-cGeO2: dMn<4+>, eTi<4+>, wherein aMgO-bMgF2-cGeO2 is a matrix, manganese element and titanium element are activation elements, a is 1-6, b is 0.05-2, c is 0.5-3, d is 0.01-0.05, and e is 0.005-0.03. In an electroluminescence (EL) spectrum of a luminescent thin film prepared by the manganese and titanium co-doped fluorine magnesium germanate luminescent material, a wavelength region of 650 nm has very strong luminescence peaks, and the luminescent thin film can be used in a thin-film electroluminescent display. The invention also provides a preparation method and application of the manganese and titanium co-doped fluorine magnesium germanate luminescent material.

Description

【Technical field】 [0001] The invention relates to a manganese-titanium co-doped fluoromagnesium germanate luminescent material, a preparation method thereof, a manganese-titanium co-doped fluoromagnesium germanate 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, manganese-titanium co-doped fluoromagnesium germanate luminescent materials that can be applied to thin film electroluminescent displays have not been reported yet. 【Conte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/66H05B33/14
Inventor 周明杰王平陈吉星梁禄生
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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