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Samarium-doped alkaline-earth niobium zincate luminescent material, and preparation method and application thereof

A niobium zincate and luminescent material technology, applied in the field of samarium-doped alkaline earth niobium zincate luminescent material

Inactive Publication Date: 2015-06-03
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 samarium-doped alkaline earth niobate zincate luminescent material that can be applied to thin film electroluminescent displays has not been reported yet.

Method used

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  • Samarium-doped alkaline-earth niobium zincate luminescent material, and preparation method and application thereof
  • Samarium-doped alkaline-earth niobium zincate luminescent material, and preparation method and application thereof
  • Samarium-doped alkaline-earth niobium zincate luminescent material, and preparation method and application thereof

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preparation example Construction

[0034] The preparation method of the above-mentioned samarium-doped alkaline earth niobium zincate luminescent material comprises the following steps:

[0035] Step S11, according to Me 3-x ZnNb 2 o 9 :xSm 3+ The stoichiometric ratio of each element weighs MeO, ZnO, Nb 2 o 5 and Sm 2 o 3The powder is uniformly mixed, wherein, x is 0.01-0.05, and MeO is one of calcium oxide, strontium oxide and barium oxide; and

[0036] Sinter the uniformly mixed powder at 900°C to 1300°C for 0.5 to 5 hours to obtain the chemical formula Me 3-x ZnNb 2 o 9 :xSm 3+ Samarium doped alkaline earth niobium zincate luminescent material.

[0037] In this step, preferably, x is 0.03.

[0038] Step S12, sintering the mixed powder at 900°C-1300°C for 0.5-5 hours to obtain a samarium-doped alkaline earth niobate zincate luminescent material, whose chemical formula is Me 3-x ZnNb 2 o 9 :xSm 3+ .

[0039] In this step, it is preferable to sinter at 1250° C. for 3 hours.

[0040] One embodi...

Embodiment 1

[0067] Choose powder with a purity of 99.99%, and mix CaO, ZnO, Nb 2 o 5 and TiO 2 The powder is mixed according to the molar number of 3.97mmol, 1mmol, 1mmol and 0.03mmol. 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 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 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 20 sccm, the pressure is adjusted to 1.0 Pa, the substrate temperature is 500°C, and the sputtering power is 150W. The chemical formula of the obtained sample is Ca 3.97 ZnNb 2 o 9 : 0.03Sm 3+ A luminescent film with a thickness of 150nm, and then a layer of...

Embodiment 2

[0073]Choose powder with a purity of 99.99%, and mix CaO, ZnO, Nb 2 o 5 and TiO 2 The powder is mixed according to the molar number of 3.99mmol, 1mmol, 1mmol and 0.01mmol. 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 . 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 0.5Pa, the substrate temperature is 250°C, the sputtering power is 50W, and the chemical formula of the obtained sample is Ca 3.99 ZnNb 2 o 9 : 0.01Sm 3+ A luminescent film with a thickness of 300nm, and then evaporate...

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Abstract

The invention provides a samarium-doped alkaline-earth niobium zincate luminescent material of which the chemical formula is Me[3-x]ZnNb2O9:xSm<3+>,Me[3-x]ZnNb2O9, wherein Me[3-x]ZnNb2O9 is the matrix, Sm<3+> is an active element, x is 0.01-0.05, and Me is one of calcium, strontium and barium. The light-emitting film prepared from the samarium-doped alkaline-earth niobium zincate luminescent material has strong light-emitting peaks at the wavelength of 638nm and 727nm in the electroluminescent spectrum (EL), and thus, is applicable to film electroluminescent display devices. The invention also provides a preparation method and application of the samarium-doped alkaline-earth niobium zincate luminescent material.

Description

【Technical field】 [0001] The invention relates to a samarium doped alkaline earth niobium zincate luminescent material, a preparation method thereof, a samarium doped alkaline earth niobium zincate 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, no reports have been reported on samarium-doped alkaline earth niobate zincate luminescent materials that can be applied to thin-film electroluminescent displays. 【Content of invention】 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/67H05B33/14
Inventor 周明杰陈吉星王平黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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