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Long afterglow material for simultaneous emission of visible light and near infrared as well as preparation method thereof

A long afterglow luminescence, selected technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of scarcity of luminescent powder and ecological and environmental hazards.

Inactive Publication Date: 2017-09-08
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because high-priced Cr ions are likely to cause harm to the ecological environment, it is urgent to develop new near-infrared long-lasting materials.
[0004] In the prior art, a borate glass activated by Yb ions has near-infrared long-lasting luminescence (J.Appl.Phys.2007, 101, 113304.), but the luminescent powder activated by Yb ions is very rare
In particular, long-lasting materials that can emit visible light and near-infrared light at the same time have not been reported.

Method used

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  • Long afterglow material for simultaneous emission of visible light and near infrared as well as preparation method thereof
  • Long afterglow material for simultaneous emission of visible light and near infrared as well as preparation method thereof
  • Long afterglow material for simultaneous emission of visible light and near infrared as well as preparation method thereof

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preparation example Construction

[0045] The present invention provides a method for preparing the long afterglow luminescent material described in the above technical solution, which includes the following steps:

[0046] The A source compound, the Yb source compound, the M source compound, the T source compound, the elemental sulfur and the N source compound are mixed and ground uniformly, and then calcined to obtain a long afterglow luminescent material.

[0047] In the present invention, the A source compound preferably includes A-containing oxide, A-containing carbonate, A-containing oxalate, A-containing chloride, A-containing sulfate, A-containing nitrate and One or more of A-containing acetate; more preferably A-containing oxide and / or A-containing carbonate, most preferably A-containing oxide.

[0048] In the present invention, the Yb is a near-infrared luminescent ion. The Yb source compound preferably includes one or more of Yb-containing oxide, Yb-containing carbonate, Yb-containing nitrate, Yb-containin...

Embodiment 1

[0065] Take Y 2 O 3 (Analytical pure), Yb 2 O 3 (Analytical pure), CaCO 3 (Analytical pure), TiO 2 (Analytical pure) Weigh and mix according to the molar ratio (2-0.0001-0.01-0.01): 0.0001:0.02:0.02, and then add 30% Na of the above mixture mass 2 CO 3 (Analytical pure) and 100% elemental sulfur of the above mixture mass are fully ground and uniform to obtain an initial raw material mixture.

[0066] Put the initial raw material mixture in a corundum crucible, put the above corundum crucible with the mixture in a high temperature furnace, calcinate at 1200°C for 4 hours in the presence of hydrogen, cool to room temperature naturally, take out, crush and grind uniformly, and obtain Powdered long afterglow crude product; the crude product is washed with water and dilute hydrochloric acid to become long afterglow luminescent material Y 2-0.0001-0.01- 0.01 O 2 S: 0.0001Yb, 0.01Ca, 0.01Ti.

[0067] The excitation spectrum, emission spectrum and afterglow spectrum test of the long aftergl...

Embodiment 2

[0069] Take Lu 2 O 3 (Analytical pure), Yb 2 O 3 (Analytical pure), MgCO 3 (Analytical pure), TiO 2 (Analytical pure) Weigh and mix according to the molar ratio (2-0.0005-0.01-0.01): 0.0005:0.02:0.02, and then add 30% Na of the above mixture mass 2 CO 3 (Analytical pure) The elemental sulfur with 100% of the mass of the above mixture is fully ground and uniform to obtain the initial raw material mixture;

[0070] Put the initial raw material mixture in a corundum crucible, put the corundum crucible with the mixture in a high-temperature furnace, calcinate at 1200°C for 4 hours in the presence of hydrogen, cool to room temperature naturally, take out, crush and grind uniformly, and obtain Powdered long-lasting crude product; the crude product is washed with water and dilute hydrochloric acid to become the long-lasting luminescent material Lu 2-0.0005-0.01- 0.01 O 2 S: 0.0005Yb, 0.01Mg, 0.01Ti.

[0071] The excitation spectrum, emission spectrum and afterglow spectrum test of the long...

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Abstract

The invention provides a long afterglow material for simultaneous emission of visible light and near infrared as well as a preparation method thereof. The general formula of the material is as follows: A<2-a-b-c>O<2>S:aYb,bM,cT; a=0.00001-0.02, b=0.0001-0.03, c=0.0001-0.03; A is selected from one or several kinds of Y, Sc, La, Gd and Lu; M is selected from one or several kinds of Zn, Mg, Ca, Sr and Ba; T is selected from one or several kinds of V, Nb, Ta, Ti, Zr, Hf, Cr, Mo and W. The material employs Yb as a luminescent ion, M and T as codoped ions, N is a melting accelerating and catalyzing ion, so that the luminescent material can be effectively excited by ultraviolet light, and at the same time, the material can produce long afterglow luminescence of visible light and near infrared, and afterglow time is long; the product has good physical and chemical stability without toxicity and radioactivity, and does not harm human bodies and environment.

Description

Technical field [0001] The present invention relates to the technical field of long-lasting luminescent materials, in particular to a long-lasting material that simultaneously emits visible light and near-infrared light and a preparation method thereof. Background technique [0002] Long afterglow luminescent material is a material that can store the energy of external light radiation such as ultraviolet light and visible light, and then slowly release the stored energy in the form of light at room temperature. The latest research results show that long afterglow materials have important application value in the field of in vivo biological imaging, AC LED, low light indication and display. [0003] Recently, as the application potential of near-infrared long-lasting materials in medical imaging has become increasingly prominent, near-infrared long-lasting materials have attracted great attention from researchers. However, there are few types of long afterglow materials for near-in...

Claims

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Application Information

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IPC IPC(8): C09K11/78C09K11/82
CPCC09K11/7769C09K11/7776
Inventor 李成宇张粟张洪杰庞然姜丽宏李达吕玲玲
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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