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Praseodymium-ytterbium co-doped yttrium vanadate up-conversion luminescent material and preparation method and application thereof

A technology of luminescent materials and co-doping, which is applied in the fields of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc.

Inactive Publication Date: 2014-05-21
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 up-conversion luminescent material of praseodymium and ytterbium co-doped yttrium vanadate, which can be excited by long-wave radiation such as infrared, red and green light, and emits blue light, has not been reported yet.

Method used

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  • Praseodymium-ytterbium co-doped yttrium vanadate up-conversion luminescent material and preparation method and application thereof
  • Praseodymium-ytterbium co-doped yttrium vanadate up-conversion luminescent material and preparation method and application thereof
  • Praseodymium-ytterbium co-doped yttrium vanadate up-conversion luminescent material and preparation method and application thereof

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preparation example Construction

[0027] The preparation method of the above-mentioned praseodymium-ytterbium co-doped yttrium vanadate up-conversion luminescent material comprises the following steps:

[0028] Step S 11. According to Y 1-x-y VO 4 :xPr 3+ ,yYb 3+ The stoichiometric ratio of each element is weighed as Y 2 o 3 , V 2 o 5 , Pr 2 o 3 and Yb 2 o 3 Powder, wherein, x is 0.01-0.08, and y is 0-0.1.

[0029] In this step, preferably, x is 0.05 and y is 0.06.

[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 concentration of 30% by mass or sulfuric acid with a concentration of 30% by mass.

[0032] In this step, preferably, the solvent is distilled water or a mixed solution of distilled ...

Embodiment 1

[0042] Choose Y 2 o 3 , V 2 o 5 , Pr 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 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 the general chemical formula Y 0.89 VO 4 :0.05Pr 3+ , 0.06Yb 3+ up-converting phosphors.

[0043] Preparation of organic light-emitting diodes The substrate 1 stacked in sequence uses soda-lime glass, the cathode 2 uses a metal Ag layer, and the organic light-emitting la...

Embodiment 2

[0048] Choose Y 2 o 3 , V 2 o 5 , Pr 2 o 3 and Yb 2 o 3 The powder is mixed according to the molar number of each component being 0.91mmol, 1mmol, 0.08mmol and 0.1mmol. After mixing, it is dissolved in a sulfuric acid solvent with a concentration of 30% for crystallization treatment to obtain crystals, and then the crystals are dissolved in distilled water and ammonia water is added 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 the general chemical formula Y 0.82 VO 4 :0.08Pr 3+ , 0.1yb 3+ up-converting phosphors.

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Abstract

The invention discloses a praseodymium-ytterbium co-doped yttrium vanadate up-conversion luminescent material with a chemical general formula of Y(1-x-y)VO4:xPr<3+>, yYb<3+>, wherein x is 0.01-0.08 and y is 0-0.1. In the photoluminescence spectrum of the praseodymium-ytterbium co-doped yttrium vanadate up-conversion luminescent material, the excitation wavelength of the praseodymium-ytterbium co-doped yttrium vanadate up-conversion luminescent material is 980nm, the transition radiation from <3>P0 to <3>H4 of the Pr<3+> ion forms a luminescence peak in the 485nm wavelength area, and the praseodymium-ytterbium co-doped yttrium vanadate up-conversion luminescent material can be used as a blue light luminescent material. The invention also provides a preparation method of the praseodymium-ytterbium co-doped yttrium vanadate up-conversion luminescent material and an organic LED (light emitting diode) using the praseodymium-ytterbium co-doped yttrium vanadate up-conversion luminescent material.

Description

technical field [0001] The invention relates to a praseodymium-ytterbium co-doped yttrium vanadate up-conversion light-emitting material, a preparation method and an organic light-emitting diode. Background technique [0002] Organic light-emitting diodes (OLEDs) are extremely 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 up-conversion lumines...

Claims

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Application Information

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IPC IPC(8): C09K11/82H01L51/54
Inventor 周明杰王平陈吉星黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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