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Thulium-holmium co-doped zirconia upconversion phosphor and preparation method thereof

A technology of co-doping and phosphor powder, applied in the field of phosphor powder

Inactive Publication Date: 2015-05-06
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still few reports on the field of preparing phosphors and applying them to OLEDs.

Method used

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  • Thulium-holmium co-doped zirconia upconversion phosphor and preparation method thereof
  • Thulium-holmium co-doped zirconia upconversion phosphor and preparation method thereof
  • Thulium-holmium co-doped zirconia upconversion phosphor and preparation method thereof

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preparation example Construction

[0016] The preparation method of the above-mentioned thulium-holmium co-doped zirconia up-conversion phosphor, such as figure 1 As shown, its preparation process steps are as follows:

[0017] Step S1, weighing ZrO with a mass ratio of 1.04 to 1.2: 0.2 to 1.17: 0.17 to 1.7 2 、Tm 2 o 3 and Ho 2 o 3 Powder;

[0018] Step S2, grinding and mixing the powder in step S1 for 20 to 60 minutes (preferably 40 minutes), to obtain a uniformly mixed powder precursor;

[0019] Step S3, putting the powder precursor in step S2 into a calcination device (such as a muffle furnace), calcination treatment at 800-1300°C (preferably 1150°C) for 0.5-5h (preferably 3h), and then cooling to room temperature , the general chemical formula is Zr 1-y-x o 2 :xTm 3+ ,yHo 3+ The thulium-holmium co-doped zirconia up-conversion phosphor; wherein, Zr 1-y-x o 2 is the matrix, Tm and Ho are doping elements, the value range of x is 0.01-0.06, and the value range of y is 0.01-0.1.

[0020] In the ab...

Embodiment 1

[0024] 1. Weigh 1.11g of ZrO powder 2 , Tm of 0.78g 2 o 3 and 1.02g of Ho 2 o 3 ;

[0025] 2. Grind and mix the powder in step 1 in a corundum mortar for 40 minutes to make it evenly mixed to obtain the powder precursor;

[0026] 3. Put the corundum mortar containing the powder precursor in step 2 into a muffle furnace, and burn it at 1150°C for 3 hours; then cool it to room temperature and take it out to obtain Zr 0.9 o 2 :0.04Tm 3+ , 0.06Ho 3+ Thulium-holmium co-doped zirconia up-conversion phosphor.

[0027] figure 2 It is the YRD figure of the thulium-holmium co-doped zirconia up-conversion phosphor powder obtained in Example 1; figure 2 It can be seen that compared with the standard PDF card, the diffraction peaks show the crystal orientation of monoclinic zirconia and tetragonal zirconia. There were no impurity peaks and no peaks of rare earth ions; indicating that the ions were doped into the crystal lattice of zirconia.

[0028] image 3 Be that embodime...

Embodiment 2

[0030] 1. Weigh 1.2g of ZrO powder 2 , Tm of 0.2g 2 o 3 and 0.17g of Ho 2 o 3 ;

[0031] 2. Grind and mix the powder in step 1 in a corundum mortar for 20 minutes to make it evenly mixed to obtain the powder precursor;

[0032] 3. Put the corundum mortar containing the powder precursor in step 2 into a muffle furnace, and burn it at 800°C for 0.5h; then cool it to room temperature and take it out to obtain Zr 0.98 o 2 :0.01Tm 3+ , 0.01Ho 3+ Thulium-holmium co-doped zirconia up-conversion phosphor.

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Abstract

The invention belongs to the field of phosphor, and discloses thulium-holmium co-doped zirconia upconversion phosphor and a preparation method thereof. The general chemical formula of the upconversion phosphor is Zr1-y-xO2:xTm3+, yHo3+, wherein Zr1-y-xO2 is a matrix, Tm and Ho are doping elements, the value range of x is 0.01-0.06, and the value range of y is 0.01-0.1. According to the invention, the thulium-holmium co-doped zirconia upconversion phosphor is prepared by magnetron sputtering equipment, and can realize blue-light short-wave luminescence excited by long-wave radiation from infrared to green light; therefore, the phosphor can make up deficiencies of blue-light materials in current display and luminescent materials.

Description

technical field [0001] The invention relates to the field of fluorescent powder, in particular to a thulium-holmium co-doped zirconia up-conversion fluorescent powder and a preparation method thereof. Background technique [0002] The full name of OLED is Orgynic Light Emitting Diode, organic light emitting diode. It has many advantages. Its component structure is simple, its production cost is cheap, and its self-luminous characteristics, coupled with OLED's short response time and bendable characteristics, make it a very wide range of applications. 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, f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/67
Inventor 周明杰王平陈吉星黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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