Dysprosium doped rare earth stannate upconversion luminescence material, and preparation method and application thereof

A technology of luminescent materials and stannates, which is applied in the fields of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., to achieve the effects of good dispersion, high thermal and mechanical stability, and good optical transparency

Inactive Publication Date: 2015-05-27
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, dysprosium-doped rare-earth stannate upconversion luminescent materials that can be excited by long-wave radiation such as infrared and red-green light to emit blue light have not been reported yet.

Method used

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  • Dysprosium doped rare earth stannate upconversion luminescence material, and preparation method and application thereof
  • Dysprosium doped rare earth stannate upconversion luminescence material, and preparation method and application thereof
  • Dysprosium doped rare earth stannate upconversion luminescence material, and preparation method and application thereof

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preparation example Construction

[0029] The preparation method of the dysprosium-doped rare earth stannate up-conversion luminescent material comprises the following steps:

[0030] Step S11, according to Me 2-x SnO 5 :xDy 3+ The stoichiometric ratio of each element is called Me 2 o 3 , SnO 2 and Dy 2 o 3 Powder, wherein, x is 0.01~0.08, the Me 2 o 3 It is yttrium oxide, lanthanum oxide, gadolinium oxide or lutetium oxide.

[0031] The host of the dysprosium doped rare earth stannate upconversion luminescent material is Me 2-x SnO 5 , the doping element is Dy 3+ .

[0032] In this step, Me 2 o 3 , SnO 2 and Dy 2 o 3 The molar ratio of the powder is 2-x:2:x, and x is 0.01-0.08.

[0033] In this step, preferably, x is 0.04.

[0034] Step S13, after mixing the powder weighed in step S11 evenly, dissolving in a strong acid solution, and then evaporating to dryness to obtain crystals;

[0035] Dissolving the crystals in a solvent to obtain a mixed solution, and then adding ammonia water to adju...

Embodiment 1

[0051] Will Y 2 o 3 , SnO 2 and Dy 2 o 3 The powders were mixed in molar amounts of 1.96mmol, 2mmol and 0.04mmol. After mixing, dissolve in nitric acid solution, evaporate to dryness to obtain crystals, then dissolve crystals in distilled water to obtain a mixed solution, add ammonia water, and adjust the pH value of the mixed solution to 5. Then the mixed solution was transferred to a stainless steel reaction kettle lined with polytetrafluoroethylene, and kept at 300° C. for 3 h to obtain a solid substance. Then the solid matter was repeatedly washed with absolute ethanol and distilled water, and evaporated to dryness at 100 ° C to obtain the chemical formula Y 1.96 SnO 5 : 0.04Dy 3+ up-converting luminescent materials.

[0052] see figure 2 , figure 2 The chemical formula of dysprosium-doped rare earth stannate up-conversion luminescent material obtained in this implementation is Y 1.96 SnO 5 : 0.04Dy 3+ Photoluminescence Spectrum Diagram. Depend on figure ...

Embodiment 2

[0057] Will Y 2 o 3 , SnO 2 and Dy 2 o 3 The powders were mixed in molar amounts of 1.99mmol, 2mmol and 0.01mmol. After mixing, dissolve in hydrochloric acid solution, evaporate to dryness to obtain crystals, and then dissolve the crystals in distilled water to obtain a mixed solution, add ammonia water, and adjust the pH value of the mixed solution to 1. Then the mixed solution was transferred to a stainless steel reaction kettle lined with polytetrafluoroethylene, and kept at 150° C. for 2 h to obtain a solid substance. Then the solid matter was repeatedly washed with absolute ethanol and distilled water, and evaporated to dryness at 100 ° C to obtain the chemical formula Y 1.99 SnO 5 : 0.01Dy 3+ up-converting luminescent materials.

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Abstract

A dysprosium doped rare earth stannate upconversion luminescence material has a chemical formula of Me2-xSnO5:xDy<3+>, wherein x is 0.01-0.08, and Me represents yttrium, lanthanum, gadolinium and lutetium. In the photoluminescence spectra of the dysprosium doped rare earth stannate upconversion luminescence material, the dysprosium doped rare earth stannate upconversion luminescence material can be excited by long-wave radiation from infrared to green, has emission peak at the wavelength region of 482 nm formed by transition radiation of Dy<3+> from 4F9 / 2 to 6F15 / 2, and can be used as a blue light emitting material. The invention also provides a preparation method of the dysprosium doped rare earth stannate upconversion luminescent material and an organic light-emitting diode using the dysprosium doped rare earth stannate upconversion luminescent material.

Description

technical field [0001] The invention relates to a dysprosium-doped rare earth stannate up-conversion luminescent material, a preparation method and an application thereof. 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 rare-earth stannate upconversion lum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78H01L51/54
Inventor 周明杰陈吉星王平张振华
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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