Dysprosium doped phosphate tellurite glass upconversion luminescent material, and preparation method and application thereof

A technology of phosphotelluride and luminescent materials, applied in the directions of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc.

Inactive Publication Date: 2014-08-06
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 phosphotellurite glass up-conversion 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 phosphate tellurite glass upconversion luminescent material, and preparation method and application thereof
  • Dysprosium doped phosphate tellurite glass upconversion luminescent material, and preparation method and application thereof
  • Dysprosium doped phosphate tellurite glass upconversion luminescent material, and preparation method and application thereof

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preparation example Construction

[0028] The preparation method of the dysprosium-doped phosphotellurite glass up-conversion luminescent material comprises the following steps:

[0029] Step S11, according to PbF 2 -TeO 2 –P 2 o 5 :xDy 3+ The stoichiometric ratio of each element is weighed as PbF 2 , TeO 2 , P 2 o 5 and Dy 2 o 3 Powder, wherein, x is 1-5.

[0030] In this step, the PbF 2 , TeO 2 , P 2 o 5 and Dy 2 o 3 The molar ratio of each component of the powder is (10~35):(50~70):(10~15):(1~5).

[0031] In this step, preferably, x is 2.

[0032] Step S13, mixing the powder weighed in step S11 evenly to obtain a precursor.

[0033] In this step, the powder is ground in a corundum bowl for 20 minutes to 60 minutes to obtain a uniformly mixed precursor, preferably for 40 minutes.

[0034] Step S15, burning the precursor at 800° C. to 1100° C. for 0.5 hours to 5 hours,

[0035] Preferably, the precursor is burned at 950° C. for 3 hours.

[0036] Step S17, cooling the precursor treated in s...

Embodiment 1

[0042] The powder with a purity of 99.99% is selected, and the PbF 2 , TeO2 , P 2 o 5 and Dy 2 o 3 The components of the powder are ground in a corundum mortar for 40 minutes in a molar ratio of 25:60:13:2 to make them evenly mixed, then burned in a muffle furnace at 950°C for 3 hours, then cooled to 200°C and kept for 2 hour, and then take it out with the furnace cooling to room temperature to obtain block material, after pulverization, the general chemical formula can be obtained as 25PbF 2 -60TeO 2 –13P 2 o 5 : 2Dy 3+ Up-converting phosphors.

[0043] The process of organic light-emitting diode preparation:

[0044] The sequentially stacked substrate 1 uses soda-lime glass, the cathode 2 uses a metal Ag layer, and the organic light-emitting layer 3 uses Ir(piq)2(acac), the Chinese name is bis(1-phenyl-isoquinoline)(acetylacetonate) iridium (III), the transparent anode 4 uses indium tin oxide ITO, and the transparent encapsulation layer 5 is polytetrafluoroethylene...

Embodiment 2

[0049] The powder with a purity of 99.99% is selected, and the PbF 2 , TeO 2 , P 2 o 5 and Dy 2 o 3 The molar ratio of each component of the powder is 35:50:14:1, grind it in a corundum mortar for 20 minutes to make it evenly mixed, then burn it in a muffle furnace at 800°C for 3 hours, then cool it down to 250°C and keep it warm After 0.5 hours, cool to room temperature with the furnace and take it out to obtain a bulk material, which can be crushed to obtain a chemical formula of 35PbF 2 -50TeO 2 –14P 2 o 5 : Dy 3+ up-converting phosphors.

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Abstract

A dysprosium doped phosphate tellurite glass upconversion luminescent material has a chemical formula of PbF2-TeO2-P2O5:xDy<3+>, wherein x is 1-5. In the photoluminescence spectra of the dysprosium doped phosphate tellurite glass upconversion luminescent material, the dysprosium doped tellurite glass upconversion luminescent material has excitation wavelength of 796 nm, and radiation 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 phosphate tellurite glass upconversion luminescent material and an organic light-emitting diode using the dysprosium doped phosphate tellurite glass upconversion luminescent material.

Description

technical field [0001] The invention relates to a dysprosium-doped phosphorous tellurate glass 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 phosphotellurite gl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/88H01L51/54
Inventor 周明杰王平陈吉星张振华
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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