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Gallate long-afterglow fluorescent powder material and preparation method thereof

A long-lasting phosphor and gallate technology, which is applied in the field of fluorescent materials, can solve the problem of low penetration depth of organisms, and achieve the effects of afterglow emission bandwidth, fast response, and high product purity

Pending Publication Date: 2020-03-17
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention aims to propose a gallate long-lasting phosphor material to solve the problem of low penetration depth of existing long-lasting phosphors to organisms

Method used

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  • Gallate long-afterglow fluorescent powder material and preparation method thereof
  • Gallate long-afterglow fluorescent powder material and preparation method thereof
  • Gallate long-afterglow fluorescent powder material and preparation method thereof

Examples

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Embodiment 1

[0027] A gallate long-lasting phosphor material, which is specifically prepared by the following method:

[0028] 1) Accurately weigh 1.7866g of raw materials (1.7850×10 -2 mol)CaCO 3 , 1.1557g (0.6166×10 -2 mol)Ga 2 o 3 , 1.9350g (1.8498×10 -2 mol)GeO 2 , 0.0315g (0.3083×10 -4 mol)Pr 6 o 11 , 0.0910g (0.2312×10 -3 mol)Yb 2 o 3 , wherein, the purity of each raw material used is analytically pure, and the particle size is micron level. Put each raw material in an agate mortar, add absolute ethanol, and grind for 2 hours. After the raw materials are mixed evenly, place them in an oven at 150°C dry to obtain mixed material A;

[0029] 2) Put the mixed material A in a quartz crucible, and then put it into a high-temperature furnace at 1150°C for calcination for 7 hours. After the calcination is completed, cool it to room temperature and grind it to obtain a chemical formula of Ca 2.895 Ga 2 Ge 3o 12 :0.03Pr 3+ ,0.075Yb 3+ The gallate long afterglow phosphor mater...

Embodiment 3

[0035] A gallate phosphor material, specifically prepared by the following method:

[0036] 1) Accurately weigh 1.8098g of raw materials (1.8082×10 -2 mol)CaCO 3 , 1.1587g (0.6182×10 -2 mol)Ga 2 o 3 , 1.9401g (1.8545×10 -2 mol)GeO 2 , 0.0913g (0.2318×10 -3 mol)Yb 2 o 3 , wherein, the purity of each raw material used is analytically pure, and the particle size is micron level. Put each raw material in an agate mortar, add absolute ethanol, and grind for 2 hours. After the raw materials are mixed evenly, place them in an oven at 150°C dry to obtain mixed material A;

[0037] 2) Put the mixed material A in a quartz crucible, and then put it into a high-temperature furnace at 1150°C for calcination for 7 hours. After the calcination is completed, cool it to room temperature and grind it to obtain a chemical formula of Ca 2.925 Ga 2 Ge 3 o 12 :0.075Yb 3+ The gallate phosphor material (CGGY phosphor).

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Abstract

The invention provides a gallate long-afterglow fluorescent powder material and a preparation method thereof. The gallate long-afterglow fluorescent powder material is obtained by co-doping gallate with Pr<3+> and Yb<3+>, wherein the chemical structural formula of the gallate long-afterglow fluorescent powder material is Ca3(1-x-y)Ga2Ge3O12:3xPr<3+>, 3yYb<3+>, x ranges from 0.001 to 0.02, and y ranges from 0.005 to 0.03. The gallate long-afterglow fluorescent powder material is obtained by co-doping gallate Ca3Ga2Ge3O12(CGG) with Pr<3+> and Yb<3+>, can be excited by ultraviolet light, has a wide emission band in a near-infrared region, has an emission peak located at 975nm, is matched with a first biological transparent window, has deep penetrability to biological tissues, and can be wellapplied to the field of biomedical imaging as a probe.

Description

technical field [0001] The invention relates to the technical field of fluorescent materials, in particular to a gallate long-lasting phosphor material and a preparation method thereof. Background technique [0002] Since the middle of last century, long afterglow luminescent materials began to enter people's field of vision. Long afterglow phosphors are a type of luminescent material that can absorb external excitation energy and store the energy. After the excitation is removed, it can slowly release the energy in the form of light. In 1996, Matsuzawa et al. reported that SrAl can last for several hours and produce a strong green afterglow 2 o 4 :Eu, Dy materials. Subsequently, the research on long-lasting phosphors is increasing, and a relatively complete long-lasting luminescent material system has been formed, and some phosphors have been commercialized. According to the type of matrix, long-lasting phosphors can be divided into sulfide systems (ZnS:Cu + ,Co 2+ 、Ca...

Claims

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Application Information

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IPC IPC(8): C09K11/66A61K49/00
CPCC09K11/7775A61K49/0019
Inventor 戴武斌黄珂周佳许硕胡金樊烨明徐慢
Owner WUHAN INSTITUTE OF TECHNOLOGY