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Neodymium-ytterbium codoped zirconium sulfide up-conversion fluorescent powder, as well as preparation method and applications thereof

A technology of co-doping and zirconium sulfide, which is applied in the field of phosphors to reduce the probability of non-radiative transitions, improve the up-conversion luminous efficiency, and reduce the particle size of the powder.

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, NdYb co-doped zirconium sulfide 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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  • Neodymium-ytterbium codoped zirconium sulfide up-conversion fluorescent powder, as well as preparation method and applications thereof
  • Neodymium-ytterbium codoped zirconium sulfide up-conversion fluorescent powder, as well as preparation method and applications thereof
  • Neodymium-ytterbium codoped zirconium sulfide up-conversion fluorescent powder, as well as preparation method and applications thereof

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Experimental program
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Effect test

Embodiment 1

[0035] combine figure 1 As shown in the flow chart of the preparation process of neodymium ytterbium co-doped zirconium sulfide up-conversion phosphor, the invention provides a preparation method of neodymium ytterbium co-doped zirconium sulfide up-conversion phosphor, comprising the following steps:

[0036] (1) Weigh ZrS respectively 2 (0.96mmol), Yb 2 S 3 (0.03mmol) and Nd 2 S 3 (0.01mmol) powder;

[0037] (2) Place the powder obtained in (1) in a corundum mortar and grind for 40 minutes to obtain a uniformly mixed powder precursor;

[0038] (3) Put the powder precursor obtained in (2) into a muffle furnace, burn at 900°C for 3 hours, cool to 200°C and keep it warm for 2 hours, then take it out after cooling to room temperature with the furnace to obtain a bulk material ;

[0039] (4) Pulverize the bulk material obtained in (3) to obtain the neodymium-ytterbium co-doped zirconium sulfide up-conversion phosphor P1, whose general chemical formula is Zr 0.92 S 2 : 0.0...

Embodiment 2

[0048] A preparation method of neodymium ytterbium co-doped zirconium sulfide up-conversion phosphor, comprising the following steps:

[0049] (1) Weigh ZrS respectively 2 (0.93mmol), Yb 2 S 3 (0.005mmol) and Nd 2 S 3 (0.03mmol) powder;

[0050] (2) Place the powder obtained in (1) in a corundum mortar and grind for 20 minutes to obtain a uniformly mixed powder precursor;

[0051] (3) Put the powder precursor obtained in (2) into a muffle furnace, burn at 800°C for 0.5 hours, cool to 100°C and keep it warm for 0.5 hours, and then cool to room temperature with the furnace to obtain a bulk material;

[0052] (4) Pulverize the bulk material obtained in (3) to obtain Nd-ytterbium co-doped zirconium sulfide up-conversion phosphor P2, whose general chemical formula is Zr 0.93 S 2 : 0.01Yb 3+ , 0.06Nd 3+ .

Embodiment 3

[0054] A preparation method of neodymium ytterbium co-doped zirconium sulfide up-conversion phosphor, comprising the following steps:

[0055] (1) Weigh ZrS respectively 2 (0.896mmol), Yb 2 S 3 (0.05mmol) and Nd 2 S 3 (0.002mmol) powder;

[0056] (2) Place the powder obtained in (1) in a corundum mortar and grind for 60 minutes to obtain a uniformly mixed powder precursor;

[0057] (3) Put the powder precursor obtained in (2) into a muffle furnace, burn at 1000°C for 4 hours, cool to 300°C and keep it warm for 3 hours, and then cool to room temperature with the furnace to obtain a bulk material;

[0058] (4) Pulverize the bulk material obtained in (3) to obtain Nd-ytterbium co-doped zirconium sulfide up-conversion phosphor P3, whose general chemical formula is Zr 0.896 S 2 : 0.1Yb 3+ , 0.004Nd 3+ .

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Abstract

The invention provides neodymium-ytterbium codoped zirconium sulfide up-conversion fluorescent powder, with the general chemical formula of Zr<1-x-y>S<2>:xYb<3+>, yNd<3+>, wherein ZrS2 is a matrix, Yb and Nb are doping elements, x ranges from 0.01 to 0.1, and y ranges from 0.004 to 0.06. The fluorescent powder is excited by infrared-green ray long-wave radiation to emit blue short-wave ray and can make up the deficiencies of the blue-ray material in the current luminescent material. The invention further provides a preparation method of the neodymium-ytterbium codoped zirconium sulfide up-conversion fluorescent powder. The preparation method is simple and low in production cost and can be popularized and applied. In addition, the invention further provides applications of the neodymium-ytterbium codoped zirconium sulfide up-conversion fluorescent powder in preparation of an organic electroluminescence device.

Description

technical field [0001] The invention relates to the field of fluorescent powder, in particular to a neodymium-ytterbium co-doped zirconium sulfide up-conversion fluorescent powder and a preparation method and application thereof. Background technique [0002] The full name of OLED is Organic Light Emitting Diode, that is, organic light emitting diode. It has many advantages, such as simple component structure, low production cost, self-luminous characteristics, and OLED's short response time and bendable characteristics, making it extremely wide in application. However, due to the lack of stable and efficient OLED blue light materials, the development of white light OLED devices and light source industries is greatly restricted. [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 technolo...

Claims

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Application Information

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IPC IPC(8): C09K11/67H01L51/54
Inventor 周明杰陈吉星王平钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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