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Up-converting luminescent material with ytterbium-neodymium codoped yttrium thiosilicate, preparation method thereof and organic light-emitting diode

A luminescent material and co-doping technology, which is applied in the direction of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., to achieve the effects of easy control of the preparation process, broad commercial development prospects, and promotion of development

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, Yb-Nd co-doped yttrium thiosilicate 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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  • Up-converting luminescent material with ytterbium-neodymium codoped yttrium thiosilicate, preparation method thereof and organic light-emitting diode
  • Up-converting luminescent material with ytterbium-neodymium codoped yttrium thiosilicate, preparation method thereof and organic light-emitting diode
  • Up-converting luminescent material with ytterbium-neodymium codoped yttrium thiosilicate, preparation method thereof and organic light-emitting diode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of preparation method of ytterbium neodymium co-doped yttrium thiosilicate up-conversion luminescent material, the steps comprise:

[0029] (1) Weighing Y 2 S 3 , SiS, Yb 2 S 3 and Nb 2 S 3 Powder, respectively 1.97mmol, 2mmol, 0.01mmol, 0.02mmol;

[0030] (2) Dissolve the above weighed powder in excess hydrogen sulfide aqueous solution, and add polyethylene glycol as a dispersant to obtain a precursor solution. The concentration of polyethylene glycol in the precursor solution is 0.01mol / L;

[0031] (3) Import the obtained precursor solution into the atomizer of the spray dryer for spray drying, first raise the temperature of the reaction system to 1200°C, start the spray dryer, and feed argon gas into the spray dryer to control the flow rate. 5L / min; the precursor solution starts to atomize into an aerosol, enters the reaction system with the incoming argon, and generates the final product Y in the reaction system 1.97 SiS 5 : 0.01Yb 3+ , 0.02Nd 3+ U...

Embodiment 2

[0035] A kind of preparation method of ytterbium neodymium co-doped yttrium thiosilicate up-conversion luminescent material, the steps comprise:

[0036] (1) Weighing Y 2 S 3 , SiS, Yb 2 S 3 and Nb 2 S3 Powder, respectively 1.92mmol, 2mmol, 0.03mmol, 0.05mmol;

[0037] (2) Dissolve the above weighed powder in excess hydrogen sulfide aqueous solution, and add polyethylene glycol as a dispersant to obtain a precursor solution. The concentration of polyethylene glycol in the precursor solution is 0.005mol / L;

[0038] (3) Import the obtained precursor solution into the atomizer of the spray dryer for spray drying. The system temperature of the spray dryer is 500°C, and the flow rate of nitrogen gas introduced into the atomization dryer is controlled at 1L / min; The solid solution begins to atomize into an aerosol, enters the reaction system with the nitrogen gas introduced, and generates the final product Y in the reaction system 1.92 SiS 5 : 0.03Yb 3+ , 0.05Nd 3+ Up-conv...

Embodiment 3

[0040] A kind of preparation method of ytterbium neodymium co-doped yttrium thiosilicate up-conversion luminescent material, the steps comprise:

[0041] (1) Weighing Y 2 S 3 , SiS, Yb 2 S 3 and Nb 2 S 3 Powder, respectively 1.985mmol, 2mmol, 0.005mmol, 0.01mmol;

[0042] (2) Dissolve the above weighed powder in excess hydrogen sulfide aqueous solution, and add polyethylene glycol as a dispersant to obtain a precursor solution, and the concentration of polyethylene glycol in the precursor solution is 0.05mol / L;

[0043] (3) Import the obtained precursor solution into the atomizer of the spray dryer for spray drying. The system temperature of the spray dryer is 1400°C, and the flow rate of hydrogen gas introduced into the atomization dryer is controlled at 15L / min; The solid solution begins to atomize into an aerosol, enters the reaction system with the hydrogen gas introduced, and generates the final product Y in the reaction system 1.985 SiS 5 : 0.005Yb 3+ , 0.01Nd ...

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Abstract

The invention provides an up-converting luminescent material with ytterbium-neodymium codoped yttrium thiosilicate. The chemical formula of the up-converting luminescent material is Y[2-x-y]SiS5:xYb<3+>,yNd<3+>, wherein x is more than or equal to 0.005 and is less than or equal to 0.03, and y is more than or equal to 0.01 and is less than or equal to 0.05. The up-converting luminescent material can be excited by long-wave radiation from infrared light to green light, forms an emission peak by transition radiation from Nd<3+> ion 2P3 / 2 to 4i15 / 2 in a 469nm-wavelength area and can be used as a blue-light luminescent material. The invention also provides a preparation method of the up-converting luminescent material with the ytterbium-neodymium codoped yttrium thiosilicate and an organic light-emitting diode using the up-converting luminescent material with the ytterbium-neodymium codoped yttrium thiosilicate.

Description

technical field [0001] The invention belongs to the field of semiconductor optoelectronic materials, and in particular relates to a ytterbium-neodymium co-doped yttrium thiosilicate up-conversion light-emitting material, a preparation method thereof, and an organic light-emitting diode. Background technique [0002] Organic light-emitting diode (OLED) is an energy conversion device that uses organic materials as light-emitting materials and can convert applied electrical energy into light energy. It has outstanding performances such as ultra-thin, self-luminous, fast response, low power consumption, etc., and has extremely broad application prospects in display, lighting and other fields. 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 excitati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/84H01L51/54
Inventor 周明杰陈吉星王平钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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