Up-conversion luminescent material of rare-earth doped thio aluminosilicate and preparation method thereof, and organic light-emitting diode

An aluminosilicate and rare earth doping technology is applied in the directions of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., to achieve the effects of being beneficial to industrialized production, easy to control the preparation process, and low processing cost

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, rare earth-doped thioaluminosilicate upconversion luminescent materials that can be excited by long-wave radiation such as infrared, red and green light to emit blue light are still rarely reported.

Method used

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  • Up-conversion luminescent material of rare-earth doped thio aluminosilicate and preparation method thereof, and organic light-emitting diode
  • Up-conversion luminescent material of rare-earth doped thio aluminosilicate and preparation method thereof, and organic light-emitting diode
  • Up-conversion luminescent material of rare-earth doped thio aluminosilicate and preparation method thereof, and organic light-emitting diode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of a rare earth-doped thioaluminosilicate up-conversion luminescent material, the steps comprising:

[0031] (1) Weigh Ga 2 S 3 , Al 2 S 3 , SiS, Tm 2 S 3 and Ho 2 S 3 Powders, respectively 0.3mmol, 0.23mmol, 0.4mmol, 0.02mmol, 0.015mmol; the above weighed powders were dissolved in excess hydrogen sulfide aqueous solution, and polyethylene glycol was added as a dispersant to obtain a precursor solution, The concentration of polyethylene glycol in the precursor solution is 0.01mol / L;

[0032] (2) Import the obtained precursor solution into the atomizer of the spray dryer for spray drying. The inlet temperature of the spray dryer is set at 180°C, and the outlet temperature is set at 110°C. gas, the flow rate is controlled at 5L / min; the precursor solution starts to atomize into an aerosol, enters the reaction system with the incoming argon gas, and generates a powder precursor in the reaction system;

[0033] (3) Put the powder precursor in a...

Embodiment 2

[0037] A preparation method of a rare earth-doped thioaluminosilicate up-conversion luminescent material, the steps comprising:

[0038] (1) Weigh Ga 2 S 3 , Al 2 S 3 , SiS, Tm 2 S 3 and Ho 2 S 3 Powder, respectively 0.5mmol, 0.38mmol, 0.1mmol, 0.005mmol, 0.005mmol; dissolve the above weighed powder in excess ammonium 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 0.05mol / L;

[0039] (2) Import the obtained precursor solution into the atomizer of the spray dryer for spray drying. The inlet temperature of the spray dryer is set at 220°C, and the outlet temperature is set at 130°C. gas, the flow rate is controlled at 15L / min; the precursor solution starts to atomize into an aerosol, enters the reaction system with the incoming argon gas, and generates a powder precursor in the reaction system;

[0040] (3) Put the powder precursor in a t...

Embodiment 3

[0042] A preparation method of a rare earth-doped thioaluminosilicate up-conversion luminescent material, the steps comprising:

[0043] (1) Weigh Ga 2 S 3 , Al 2 S 3 , SiS and Tm 2 S 3 Powders, respectively 0.2mmol, 0.22mmol, 0.5mmol, 0.04mmol; the above weighed powders were dissolved in excess ammonium hydrogen sulfide aqueous solution, and polyethylene glycol was added as a dispersant to obtain a precursor solution, polyethylene glycol The concentration of diol in the precursor solution is 0.005mol / L;

[0044] (2) Import the obtained precursor solution into the atomizer of the spray dryer for spray drying. The inlet temperature of the spray dryer is set at 150°C, and the outlet temperature is set at 100°C. gas, the flow rate is controlled at 1L / min; the precursor solution starts to atomize into an aerosol, enters the reaction system with the incoming argon gas, and generates a powder precursor in the reaction system;

[0045] (3) Put the powder precursor in a tempera...

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Abstract

The invention provides an up-conversion luminescent material of rare-earth doped thio aluminosilicate. The chemical formula of the up-conversion luminescent material is aM2S3-bAl2S3-cSiS2:xTm<3+>, yHo<3+>, wherein M is Ga, In or Tl; a is smaller than or equal to 0.5 and greater than or equal to 0.2; b is smaller than or equal to 0.38 and greater than or equal to 0.22; c is smaller than or equal to 0.6 and greater than or equal to 0.2; x is smaller than or equal to 0.08 and greater than or equal to 0.01; and y is smaller than or equal to 0.06 and greater than or equal to 0. The up-conversion luminescent material of the rare-earth doped thio aluminosilicate can be excited by long-wave radiation from an infrared light to a green light; an emission peak is formed by transition radiation from <1>G4 to <3>H6 of Tm<3+> ions in a wavelength region of 476nm; and the up-conversion luminescent material can be used as a blue luminescent material. The invention also provides a preparation method of the up-conversion luminescent material of the rare-earth doped thio aluminosilicate, and an organic light-emitting diode using the up-conversion luminescent material of the rare-earth doped thio aluminosilicate.

Description

technical field [0001] The invention belongs to the field of semiconductor optoelectronic materials, and in particular relates to a rare earth-doped thioaluminosilicate up-conversion luminescent 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 excitation of long-wave ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64H01L51/54
Inventor 周明杰陈吉星王平钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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