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Dysprosium-doped alkaline earth boron aluminate up-conversion luminescent material, and preparation method and application thereof

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

Inactive Publication Date: 2015-02-11
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, dysprosium-doped alkaline earth boroaluminate upconversion luminescent materials that can be excited by long-wave radiation such as infrared, red and green light to emit blue light have not been reported yet.

Method used

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  • Dysprosium-doped alkaline earth boron aluminate up-conversion luminescent material, and preparation method and application thereof
  • Dysprosium-doped alkaline earth boron aluminate up-conversion luminescent material, and preparation method and application thereof
  • Dysprosium-doped alkaline earth boron aluminate up-conversion luminescent material, and preparation method and application thereof

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preparation example Construction

[0027] The preparation method of the dysprosium-doped alkaline earth boroaluminate up-conversion luminescent material comprises the following steps:

[0028] Step S11, according to aMO-bB 2 o 3 -cAl 2 o 3 :xDy 3+ The stoichiometric ratio of each element is weighed as MO, B 2 o 3 , Al 2 o 3 and Dy 2 o 3 Powder, wherein x is 0.01-0.08, a is 0.2-0.5, b is 0.2-0.4, c is 0.1-0.5, and M is magnesium element, calcium element, strontium element or barium element.

[0029] In this step, preferably, x is 0.04, a is 0.35, b is 0.3, and c is 0.31.

[0030] Step S13, mixing and dissolving the powder weighed in step S11 evenly in an acidic solvent for crystallization treatment to obtain crystals, dissolving the crystals in the solvent, and then adding ammonia water to adjust the pH value to 1-6 to obtain a mixed solution.

[0031] In this step, preferably, the acidic solvent includes nitric acid with a mass percentage concentration of 30% or sulfuric acid with a mass percentage c...

Embodiment 1

[0042] Choose MgO, B 2 o 3 , Al 2 o 3 and Dy 2 o 3 The powder is mixed according to the molar number of each component being 0.3mmol, 0.26mmol, 0.3mmol and 0.04mmol. After mixing, dissolve in a nitric acid solvent with a concentration of 30% for crystallization treatment to obtain crystals, then dissolve the crystals in distilled water and add ammonia water to the solution to adjust the pH value to 5. Then the mixed solution was transferred to a stainless steel reaction kettle lined with polytetrafluoroethylene, and kept at 300°C for 3 hours to obtain a precipitate. Then the obtained precipitate was repeatedly washed with ethanol and distilled water, and evaporated to dryness at 100°C to obtain a chemical formula of 0.3MgO-0.26B 2 o 3 -0.3Al 2 o 3 : 0.04Dy 3+ up-converting phosphors.

[0043] see figure 2 , figure 2 The general chemical formula of dysprosium doped alkaline earth boroaluminate up-conversion luminescent material obtained in this implementation is ...

Embodiment 2

[0048] Choose MgO, B 2 o 3 , Al 2 o 3 and Dy 2 o 3 The powder is mixed according to the molar number of each component being 0.5mmol, 0.39mmol, 0.1mmol and 0.01mmol. After mixing, dissolve in a sulfuric acid solvent with a concentration of 30% for crystallization treatment to obtain crystals, then dissolve the crystals in distilled water and add ammonia water to the solution to adjust the pH to 5. Then the mixed solution was transferred to a stainless steel reaction kettle lined with polytetrafluoroethylene, and kept at 300°C for 3 hours to obtain a precipitate. Then the obtained precipitate was repeatedly washed with ethanol and distilled water, and evaporated to dryness at 100°C to obtain a chemical formula of 0.5MgO-0.39B 2 o 3 -0.1Al 2 o 3 : 0.01Dy 3+ up-converting phosphors.

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Abstract

The invention relates to a dysprosium-doped alkaline earth boron aluminate up-conversion luminescent material with a chemical formula of aMO-bB2O3-cAl2O3:xDy<3+>, wherein x is 0.01-0.08, a is 0.2-0.5, b is 0.2-0.4, c is 0.1-0.5, and M is magnesium element, calcium element, strontium element or barium element. In the photo-luminescence spectrum of the dysprosium-doped alkaline earth boron aluminate up-conversion luminescent material, dysprosium-doped alkaline earth boron aluminate up-conversion luminescent material excitation wavelength is 796nm; in a 482nm wavelength zone, light emission peak is formed by Dy<3+> ion <4>F9 / 2 to <6>F15 / 2 transition radiation. The material can be used as a blue light emission material. The invention also provides a preparation method of the dysprosium-doped alkaline earth boron aluminate up-conversion luminescent material, and an organic light-emitting diode applying the material.

Description

technical field [0001] The invention relates to a dysprosium-doped alkaline earth boroaluminate 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, dysprosium-doped alkaline earth bor...

Claims

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Application Information

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IPC IPC(8): C09K11/64H01L51/54
Inventor 周明杰陈吉星王平冯小明
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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