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Neodymium-ytterbium double-doped rare earth normal tantalate up-conversion luminescent material, preparation method and organic light-emitting diode

A luminescent material, double doping technology, applied in luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc.

Inactive Publication Date: 2014-07-16
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the NdYb double-doped rare earth orthotantalate up-conversion luminescent material that can be excited by long-wave radiation such as infrared and red-green light to emit blue light has not been reported yet.

Method used

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  • Neodymium-ytterbium double-doped rare earth normal tantalate up-conversion luminescent material, preparation method and organic light-emitting diode
  • Neodymium-ytterbium double-doped rare earth normal tantalate up-conversion luminescent material, preparation method and organic light-emitting diode
  • Neodymium-ytterbium double-doped rare earth normal tantalate up-conversion luminescent material, preparation method and organic light-emitting diode

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preparation example Construction

[0028] The preparation method of the above-mentioned neodymium-ytterbium double-doped rare-earth orthotantalate up-conversion luminescent material comprises the following steps:

[0029] Step S11, according to MeTaO 4 :xNd 3+ ,yYb 3+ The stoichiometric ratio of each element is called Me 2 o 3 , Ta 2 o 5 ,Nd 2 o 3 and Yb 2 o 3 Powder, wherein x is 0.01~0.08, y is 0~0.1, and Me is one of yttrium, lanthanum, gadolinium or lutetium.

[0030] In this step, preferably, x is 0.05 and y is 0.06.

[0031] Step S13, adding an acidic solvent to the powder weighed in step S11, and then simultaneously adding a dispersant and an alkaline solvent to obtain a mixture containing precipitates.

[0032] In this step, preferably, the acidic solvent includes hydrochloric acid with a concentration of 30% by mass or sulfuric acid with a concentration of 30% by mass;

[0033] In this step, preferably, the dispersant is oxalic acid, ethanol, triethanolamine, water-soluble starch or polyeth...

Embodiment 1

[0045] Choose Y 2 o 3 , Ta 2 o 5 ,Nd 2 o 3 and Yb 2 o 3 The powder is mixed according to the molar number of each component being 0.89mmol, 1mmol, 0.05mmol and 0.06mmol. After mixing, dissolve in a hydrochloric acid solvent with a concentration of 30% by mass, add dropwise oxalic acid as a dispersant and add ammonia water to make the mixed solution no longer form precipitation, continue to add dropwise ammonia water, adjust the pH value of the mixed solution to about 8, and let it stand After 2 hours to make the precipitation complete, use a filter funnel to filter and collect the precipitate, then repeatedly wash the precipitate with absolute ethanol and distilled water, and finally place the collected precipitate in a muffle furnace and bake it at 1000°C for 2 hours to obtain a chemical general The formula is YTaO 4 : 0.05Nd 3+ ,0.06Yb 3+ Neodymium-ytterbium double-doped rare-earth orthotantalate up-conversion luminescent material.

[0046] The sequentially stacke...

Embodiment 2

[0051] Choose Y 2 o 3 , Ta 2 o 5 ,Nd 2 o 3 and Yb 2 o 3 The powder is mixed according to the molar number of each component being 0.82mmol, 1mmol, 0.08mmol and 0.1mmol. After mixing, dissolve in sulfuric acid with a concentration of 30% by mass, add ethanol dropwise as a dispersant, and add ammonia water at the same time to make the mixed solution no longer generate precipitation, continue to add ammonia water dropwise, adjust the pH value of the mixed solution to about 8, and let it stand for 2 After 1 hour to complete the precipitation, use a filter funnel to collect the precipitate, then wash the precipitate repeatedly with absolute ethanol and distilled water, and finally place the collected precipitate in a muffle furnace and bake it at 900 ° C for 2 hours to obtain the general chemical formula for YTaO 4 : 0.08Nd 3+ ,0.1Yb 3+ Neodymium-ytterbium double-doped rare-earth orthotantalate up-conversion luminescent material.

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Abstract

Disclosed is a neodymium-ytterbium double-doped rare earth normal tantalate up-conversion luminescent material having a following general chemical formula of MeTaO4: xNd<3+>, yYb<3+>, wherein x is a number ranging from 0.01-0.08, y is a number ranging from 0-0.1 and Me is one of chemical elements of yttrium, lanthanum, gadolinium or lutecium. An excitation wavelength of the neodymium-ytterbium double-doped rare earth normal tantalate up-conversion luminescent material is 980nm in a photoluminescence spectrum of the neodymium-ytterbium double-doped rare earth normal tantalate up-conversion luminescent material, and a luminescent peak is formed by a <2>P<3 / 2> to <4>I<15 / 2> transition radiation transition radiation of Nd<3+> ions in a wavelength zone of 485nm. The material can be used as a blue light luminescent material. The invention also provides a preparation method for the neodymium-ytterbium double-doped rare earth normal tantalate up-conversion luminescent material, and an organic light-emitting diode using the neodymium-ytterbium double-doped rare earth normal tantalate up-conversion luminescent material.

Description

technical field [0001] The invention relates to a neodymium-ytterbium double-doped rare-earth orthotantalate up-conversion luminescent material, a preparation method and an organic light-emitting diode. Background technique [0002] Organic light-emitting diodes (OLEDs) have been widely used due to their simple component structure, cheap production cost, self-luminescence, short response time, and bendability. However, it is difficult to obtain stable and efficient OLED blue light materials, which greatly limits the development of white light OLED devices and light source industries. [0003] Up-conversion fluorescent materials can emit visible light and even ultraviolet light under the excitation of long-wave (such as infrared) radiation, and have broad application prospects in the fields of optical fiber communication technology, fiber amplifier, three-dimensional display, biomolecular fluorescent labeling, and infrared radiation detection. However, the NdYb double-doped ...

Claims

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Application Information

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IPC IPC(8): C09K11/78H01L51/54
Inventor 周明杰王平陈吉星钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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