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Europium-doped gadolinium molybdate luminescent material, preparation method and application thereof

A technology of luminescent materials and molybdic acid, which is applied in the fields of luminescent materials, electroluminescent light sources, chemical instruments and methods, etc.

Active Publication Date: 2013-01-09
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, the europium-doped gadolinium molybdate luminescent material that can be applied to thin film electroluminescent displays has not been reported yet.

Method used

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  • Europium-doped gadolinium molybdate luminescent material, preparation method and application thereof
  • Europium-doped gadolinium molybdate luminescent material, preparation method and application thereof
  • Europium-doped gadolinium molybdate luminescent material, preparation method and application thereof

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preparation example Construction

[0021] The preparation method of the above-mentioned europium-doped gadolinium molybdate luminescent material comprises the following steps:

[0022] Step S11, according to Gd 2 (MoO 4 ) 3 :xEu 3+ The stoichiometric ratio of each element is weighed as Gd 2 o 3 , MoO 3 and Eu 2 o 3 Powder, where 0.002≤x≤0.09.

[0023] In this step, preferably, x is 0.04.

[0024] It can be understood that Gd can also be weighed in this step 2 o 3 , MoO 3 and Eu 2 o 3 Powder and mix evenly, where Gd 2 o 3 The mass percentage content of Eu is 35% to 50%. 2 o 3 The mass percentage content is 0.1% ~ 4%, the balance is MoO 3 . preferred, Gd 2 o 3 The mass percentage content is 46%, Eu 2 o 3 The mass percent content is 1.8%.

[0025] Step S12, sintering the mixed powder at 900°C-1300°C for 0.5-5 hours to obtain the target product.

[0026] In this step, it is preferable to sinter at 1250° C. for 3 hours.

[0027] One embodiment of the europium-doped gadolinium molybdate lumi...

Embodiment 1

[0043] Select the powder with a purity of 99.99%, and the Gd with a mass percentage of 46% 2 o 3 , with a mass percentage of 1.8% Eu 2 o 3 and MoO with a mass percentage of 52.2% 3 , after uniform mixing, sintering at 1250° C. for 3 hours to form a ceramic target with a diameter of 50 mm and a thickness of 2 mm, and the target was loaded into a vacuum chamber. Then, the glass substrate with indium tin oxide (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 samples were annealed in a 0.01 Pa vacuum furnace for 2 h at a temperature of 600 °C. Then a layer of Ag is vapor-deposi...

Embodiment 2

[0048] Select the powder with a purity of 99.99%, and the Gd with a mass percentage of 35% 2 o 3 , with a mass percentage of 4% Eu 2 o 3 and MoO with a mass percentage of 61% 3 , after uniform mixing, sintering at 900°C for 5 hours to make 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 45mm. 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. Then a layer of Ag is vapor-deposited on the lumines...

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Abstract

The invention provides a europium-doped gadolinium molybdate luminescent material. The chemical formula of the europium-doped gadolinium molybdate luminescent material is Gd2(MoO4)3:xEu3+, wherein x is more than or equal to 0.002 and less than or equal to 0.09. The electroluminescent spectrum (EL) of a luminescent film prepared by the europium-doped gadolinium molybdate luminescent material has a strong luminescent peak at the 613nm wavelength areas and the luminescent film can be applied in a film electroluminescent display. The invention also provides a preparation method of the europium-doped gadolinium molybdate luminescent material, a europium-doped gadolinium molybdate luminescent film, a preparation method thereof and a film electroluminescent device.

Description

【Technical field】 [0001] The invention relates to a europium-doped gadolinium molybdate light-emitting material, a preparation method thereof, a europium-doped gadolinium molybdate light-emitting thin film, a preparation method thereof and a thin-film electroluminescent device. 【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-doped gadolinium molybdate luminescent material that can be applied to thin film electroluminescent displays. 【Content of invention】 [0003] Based on this, it is necessary to provide a kind...

Claims

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Application Information

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IPC IPC(8): C09K11/78H05B33/14
Inventor 周明杰王平陈吉星黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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