Titanium-aluminate-based up-conversion luminescent material, preparation method and application

A luminescent material, a technology of titanialuminate, which is applied in the field of upconversion luminescent material, preparation, and titanoaluminate-based upconversion luminescent material, which can solve the problems of insufficient stability, the influence of the use and popularization of upconversion luminescent material, and the preparation process Complicated and other issues, to achieve stable luminous performance, improve up-conversion luminous efficiency, and good repeatability

Active Publication Date: 2021-02-09
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, up-conversion luminescent materials are mainly concentrated in rare earth-doped fluoride, sulfide, halide and other systems, which can realize the emission of red, green, blue and white light. However, in practical applications, due to the insufficient stability of these matrix materials, The preparation process is complex, which has a great impact on the use and promotion of up-conversion luminescent materials

Method used

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  • Titanium-aluminate-based up-conversion luminescent material, preparation method and application
  • Titanium-aluminate-based up-conversion luminescent material, preparation method and application
  • Titanium-aluminate-based up-conversion luminescent material, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Preparation of Ba 3.796 Er 0.004 Yb 0.2 Ti 10 Al 2 o 27

[0037] According to the chemical formula Ba 3.76 Er 0.04 Yb 0.2 Ti 10 Al 2 o 27 , weigh barium carbonate BaCO 3 : 4.9941 g, titanium dioxide TiO 2 : 5.3244 grams, aluminum nitrate Al (NO 3 ) 3 9H 2 O: 2.8399 grams, erbium oxide Er 2 o 3 : 0.0053 g, ytterbium oxide Yb 2 o 3 : 0.2720 g, fully ground in an agate mortar and mixed evenly, placed in an alumina crucible, pre-calcined for the first time under air atmosphere, calcined at 400 ° C for 6 hours in a muffle furnace, cooled to room temperature , after taking out the sample, fully mix and grind evenly; then pre-calcine for the second time in an atmosphere containing oxygen, calcinate in a muffle furnace at 600 ° C for 8 hours, cool to room temperature, take out the sample and mix well again and grind evenly; finally Calcining in a muffle furnace at 1100° C. for 10 hours in an atmosphere containing oxygen, and cooling to room temperature, the ...

Embodiment 2

[0042] Preparation of Ba 3.78 Er 0.02 Yb 0.2 Ti 10 Al 2 o 27

[0043] According to the chemical formula Ba 3.78 Er 0.02 Yb 0.2 Ti 10 Al 2 o 27 , weigh barium nitrate Ba(NO 3 ) 2 : 6.5860 g, titanium dioxide TiO 2 : 5.3244 g, aluminum oxide Al 2 o 3 : 0.6798 g, erbium oxide Er 2 o 3 : 0.0264 g, ytterbium oxide Yb 2 o 3 : 0.2720 grams, fully ground and mixed uniformly in an agate mortar, placed in an alumina crucible, pre-calcined for the first time under air atmosphere, pre-calcined for 5 hours at 350 ° C in a muffle furnace, cooled to At room temperature, after taking out the sample, fully mix and grind evenly; then pre-calcine for the second time in an atmosphere containing oxygen, pre-calcine in a muffle furnace at 550°C for 6 hours, cool to room temperature, take out the sample and mix thoroughly and grind evenly again; Finally, in an atmosphere containing oxygen, calcinate at 1050° C. for 8 hours in a muffle furnace, and cool to room temperature to obta...

Embodiment 3

[0046] Preparation of Ba 3.76 Er 0.04 Yb 0.2 Ti 10 Al 2 o 27

[0047] According to the chemical formula Ba 3.76 Er 0.04 Yb 0.2 Ti 10 Al 2 o 27 , Weigh barium hydroxide Ba(OH) 2 : 4.2951 g, titanium dioxide TiO 2 : 5.3244 g, aluminum carbonate Al 2 (CO 3 ) 3 : 1.560 g, erbium oxide Er 2 o 3 : 0.0528 g, ytterbium oxide Yb 2 o 3 : 0.2720 g, fully ground in an agate mortar and mixed evenly, placed in an alumina crucible, pre-calcined for the first time under air atmosphere, calcined at 500 ° C for 8 hours in a muffle furnace, cooled to room temperature , after taking out the sample, fully mix and grind evenly; then pre-calcine for the second time in an atmosphere containing oxygen, calcinate in a muffle furnace at 700 ° C for 10 hours, cool to room temperature, take out the sample and mix well again and grind evenly; finally in Calcining in a muffle furnace at 1200° C. for 12 hours in an atmosphere containing oxygen and cooling to room temperature can obtain an...

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Abstract

The invention relates to a titanium-aluminate-based up-conversion luminescent material, a preparation method and an application, and belongs to the technical field of inorganic luminescent materials. The chemical formula is: Ba 4(1‑x‑y) Er x Yb y Ti 10 Al 2 o 27 , where x is Er 3+ The stoichiometric fraction of doping, y is the ytterbium ion Yb 3+ The stoichiometric fraction of doping, 0.001≤x+y≤0.2, can be prepared by simple high-temperature solid-phase method and sol-gel method. Under the excitation of 976nm infrared laser, the present invention has yellow-green luminous peaks near the wavelengths of 550nm and 660nm, the matrix structure is stable, and the concentration of doped rare earth is high, which is beneficial to enhance the luminous efficiency and realize the excitation under high power, and the up-conversion efficiency High; the prepared up-conversion luminescent material has a uniform particle size, is innovative and has good repeatability, and can be widely used in infrared radiation detection, optical fiber communication technology, fiber amplifier, three-dimensional display, biomolecular fluorescent labeling and other fields. The preparation method of the invention is simple, the cost is low, the raw material supply is unlimited, and the operation and industrial production are easy.

Description

technical field [0001] The invention relates to an up-conversion luminescent material, a preparation method and an application, in particular to a titanate-based up-conversion luminescent material, a preparation method and an application, and belongs to the technical field of inorganic luminescent materials. Background technique [0002] Stokes' law believes that materials can only be excited by high-energy light and emit low-energy light, but later people discovered that some materials can actually achieve a luminous effect that is exactly the opposite of the above-mentioned law, called anti-Stokes luminescence. Also known as up-conversion luminescence (Up-Conversion), it is an important class of rare earth luminescent materials. The energy radiated is greater than the energy absorbed. The principle of luminescence is that when the light source shines on the surface of the material, the particles will absorb two or more The low-energy excitation photon, the electron transit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/67
CPCC09K11/7774
Inventor 乔学斌
Owner XUZHOU NORMAL UNIVERSITY
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