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Tungstate upconversion luminescence temperature sensitive material doped with rare-earth elements Er and Yb and preparation method thereof

A technology of rare earth elements and sensitive materials, applied in luminescent materials, chemical instruments and methods, tungsten compounds, etc., can solve the problems of unreported temperature sensing performance, and achieve the effects of easy industrial promotion, easy preparation, and stable process

Inactive Publication Date: 2015-12-09
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the upconversion luminescence and temperature sensing performance of rare earth doped zinc tungstate, magnesium tungstate, barium tungstate, etc.

Method used

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  • Tungstate upconversion luminescence temperature sensitive material doped with rare-earth elements Er and Yb and preparation method thereof
  • Tungstate upconversion luminescence temperature sensitive material doped with rare-earth elements Er and Yb and preparation method thereof
  • Tungstate upconversion luminescence temperature sensitive material doped with rare-earth elements Er and Yb and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of ZnWO by Solid Phase Method 4 : Er0.025mol%, Yb0.25mol% ceramic material, the preparation method is as follows:

[0034] Using high-purity zinc oxide (ZnO, 99.8%), erbium oxide powder (Er 2 o 3 , 99.9%), ytterbium oxide powder (Yb 2 o 3 , 99.9%), tungsten trioxide powder (WO 3 , 99.9%) as the raw material, weigh the raw material according to the stoichiometric ratio, put it into the agate mortar, mix it evenly with alcohol as the solvent, dry the powder after the alcohol is ground, put the obtained powder into the corundum boat and pre-fire it in the air , the calcining temperature is 750°C, the heating rate is 3°C / min, the heat preservation is 5 hours, and the calcining powder is obtained by natural cooling. Then put the calcined powder into the agate mortar and add alcohol to grind again for 2 hours and dry. Add an appropriate amount of polyvinyl alcohol (PVA) with a concentration of 5% as a binder, fully stir, granulate, and pass through a 160-mes...

Embodiment 2

[0036] Preparation of ZnWO by Solid Phase Method 4 : Er0.05mol%, Yb0.5mol% ceramic material, the preparation method is as follows:

[0037] Using high-purity zinc oxide (ZnO, 99.8%), erbium oxide powder (Er 2 o 3 , 99.9%), ytterbium oxide powder (Yb 2 o 3 , 99.9%), tungsten trioxide powder (WO 3 , 99.9%) as the raw material, weigh the raw material according to the stoichiometric ratio, put it into the agate mortar, mix it evenly with alcohol as the solvent, dry the powder after the alcohol is ground, put the obtained powder into the corundum boat and pre-fire it in the air , the calcining temperature is 750°C, the heating rate is 3°C / min, the heat preservation is 5 hours, and the calcining powder is obtained by natural cooling. Then put the calcined powder into the agate mortar and add alcohol to grind again for 2 hours and dry. Add an appropriate amount of polyvinyl alcohol (PVA) with a concentration of 5% as a binder, fully stir, granulate, and pass through a 160-mesh ...

Embodiment 3

[0039] Preparation of ZnWO by Solid Phase Method 4 : Er0.1mol%, Yb0.5mol% ceramic material, the preparation method is as follows:

[0040] Using high-purity zinc oxide (ZnO, 99.8%), erbium oxide powder (Er 2 o 3 , 99.9%), ytterbium oxide powder (Yb 2 o 3 , 99.9%), tungsten trioxide powder (WO 3 , 99.9%) as the raw material, weigh the raw material according to the stoichiometric ratio, put it into the agate mortar, mix it evenly with alcohol as the solvent, dry the powder after the alcohol is ground, put the obtained powder into the corundum boat and pre-fire it in the air , the calcining temperature is 750°C, the heating rate is 3°C / min, the heat preservation is 5 hours, and the calcining powder is obtained by natural cooling. Then put the calcined powder into the agate mortar and add alcohol to grind again for 2 hours and dry. Add an appropriate amount of polyvinyl alcohol (PVA) with a concentration of 5% as a binder, fully stir, granulate, and pass through a 160-mesh s...

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Abstract

The invention discloses a tungstate upconversion luminescence temperature sensitive material doped with rare-earth elements Er and Yb and a preparation method thereof, and belongs to the technical field of a luminescence material. A general chemical formula of the luminescence material is MWO4: xEr, yYb, wherein x is more than or equal to 0.025mol% and less than or equal to 2.0mol%, x: y=1: 10 (molar ratio), and in the general formula, M is selected from one or more of Zn, Mg or Ba. The prepared luminescence material has good upconversion luminenscence performance, is high in luminous intensity, excellent in temperature sensitive performance, high in sensitivity and wide in application temperature area and has wide application prospect in the fields such as a fluorescent temperature sensor, a biological molecular fluorescence marker, infrared detection and anti-counterfeiting, three-dimensional display, solar battery and the like.

Description

technical field [0001] The invention relates to a kind of tungstate up-conversion light-emitting temperature-sensitive material doped with rare earth elements Er and Yb and a preparation method thereof, belonging to the technical field of light-emitting materials. Background technique [0002] Up-conversion materials refer to luminescent materials that can emit visible light when excited by infrared light, that is, materials that can convert infrared light into visible light. Because its luminescent process violates Stokes' law, it is also called anti-Stokes' law luminescent material. Since Auzel first reported Er in 1966 3+ and Yb 3+ Double-doped CaWO 4 Starting with up-conversion materials, the up-conversion luminescent process and its corresponding materials have attracted more and more scientists' attention. The characteristic that the upconversion luminescence of the material changes with temperature can be used to make an optical temperature sensor. The current te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/68C01G41/00
Inventor 王旭升柴晓娜李俊赵海峰李艳霞郑富慧顾佚毫刘茜冯晓敏
Owner TONGJI UNIV
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