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Tm/Ho co-doped disulfide zirconium upconversion fluorescent powder and preparation method and application thereof

A technology of co-doping and disulfide, applied in the field of phosphor powder, to achieve the effect of uniform mixing of components, good dispersibility and uniform particle size

Inactive Publication Date: 2015-02-11
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, thulium-holmium co-doped zirconium disulfide 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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  • Tm/Ho co-doped disulfide zirconium upconversion fluorescent powder and preparation method and application thereof
  • Tm/Ho co-doped disulfide zirconium upconversion fluorescent powder and preparation method and application thereof
  • Tm/Ho co-doped disulfide zirconium upconversion fluorescent powder and preparation method and application thereof

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Embodiment 1

[0039] Combine figure 1 As shown in the flow chart of the preparation process of thulium-holmium co-doped zirconium disulfide upconversion phosphor, the present invention provides a method for preparing thulium-holmium co-doped zirconium disulfide upconversion phosphor, including the following steps:

[0040] (1) Weigh ZrO separately 2 (0.96mmol), Tm 2 O 3 (0.015mmol), Ho 2 O 3 (0.005mmol) powder;

[0041] (2) Dissolve the powder obtained in (1) in an aqueous solution containing 2.5 mmol hydrogen sulfide, then add an appropriate amount of polyethylene glycol with a concentration of 0.01 mol / L, and mix well to obtain a precursor solution. The ZrO 2 (0.96mmol), Tm 2 O 3 (0.015mmol) and Ho 2 O 3 (0.005mmol) The total concentration of the powder in the precursor solution is 1.5mol / L;

[0042] (3) Introduce the precursor solution obtained in (2) into the atomizer of the spray dryer, set the inlet temperature of the spray dryer to 180°C, the outlet temperature to 110°C, and pass argon at a ...

Embodiment 2

[0053] A preparation method of thulium-holmium co-doped zirconium disulfide up-conversion phosphor includes the following steps:

[0054] (1) Weigh ZrO separately 2 (0.90mmol), Tm 2 O 3 (0.03mmol), Ho 2 O 3 (0.02mmol) powder;

[0055] (2) Dissolve the powder obtained in (1) in an aqueous solution containing 3.5 mmol hydrogen sulfide to prepare a 3 mol / L mixed solution, then add an appropriate amount of polyethylene glycol with a concentration of 0.05 mol / L, and mix well to obtain Precursor solution, the ZrO 2 (0.90mmol), Tm 2 O 3 (0.03mmol) and Ho 2 O 3 (0.02mmol) The total concentration of the powder in the precursor solution is 3mol / L;

[0056] (3) Introduce the precursor solution obtained in (2) into the atomizer of the spray dryer, set the inlet temperature of the spray dryer to 220°C, the outlet temperature to 130°C, and pour argon at a gas flow rate of 15L / min. The precursor solution starts to be atomized into an aerosol, and enters the reaction system with the introduced gas,...

Embodiment 3

[0059] (1) Weigh ZrO separately 2 (0.996mmol), Tm 2 O 3 (0.001mmol), Ho 2 O 3 (0.001mmol) powder;

[0060] (2) Dissolve the powder obtained in (1) in an aqueous solution containing 4 mmol hydrogen sulfide, then add an appropriate amount of polyethylene glycol with a concentration of 0.005 mol / L, and mix well to obtain a precursor solution. The ZrO 2 (0.996mmol), Tm 2 O 3 (0.001mmol) and Ho 2 O 3 (0.001mmol) The total concentration of the powder in the precursor solution is 0.5mol / L;

[0061] (3) Introduce the precursor solution obtained in (2) into the atomizer of the spray dryer, set the inlet temperature of the spray dryer to 150°C, the outlet temperature to 100°C, and pass argon at a gas flow rate of 1L / min. The precursor solution starts to be atomized into an aerosol, and enters the reaction system with the introduced gas, and generates a phosphor precursor in the reaction system;

[0062] (4) A microporous acid-resistant filter funnel is used to collect the phosphor precursors g...

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Abstract

The invention provides Tm / Ho co-doped disulfide zirconium upconversion fluorescent powder, the chemical general formula of which is ZrS2: xTm<3+>, yHo<3+>, wherein ZrS2 is a substrate, Tm<3+> and Ho<3+> are doping ions, the value range of x is 0.002-0.06 and the value range of y is 0.002-0.04. The fluorescent powder can be excited by long-wave radiation from infrared rays to green light for blue-light short wave emission, so that the deficiencies of blue light materials in the existing luminescent materials can be overcome. The invention further provides a preparation method of the Tm / Ho co-doped disulfide zirconium upconversion fluorescent powder. The method can be used for preparing the Tm / Ho co-doped disulfide zirconium upconversion fluorescent powder which has the advantages of less surface defects, good degree of crystallinity and relatively intact crystal structure. In addition, the invention further provides an application of the Tm / Ho co-doped disulfide zirconium upconversion fluorescent powder in preparation of organic electroluminescence devices.

Description

Technical field [0001] The invention relates to the field of phosphors, in particular to a thulium-holmium co-doped zirconium disulfide up-conversion phosphor, and a preparation method and application thereof. Background technique [0002] The full name of OLED is Organic Light Emitting Diode, or organic light emitting diode. It has many advantages, such as simple component structure, low production cost, self-luminous characteristics, short reaction time of OLED, and bendable characteristics, so that its application range is extremely wide. 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 or 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-d...

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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