Ytterbium ion Yb<3+> activated borotungstate upconversion luminescent material and preparation method thereof

A technology of luminescent materials and borotungstate, which is applied in the direction of luminescent materials, chemical instruments and methods, can solve the problems of environmental pollution and high synthesis temperature, and achieve the effects of environmental friendliness, high luminous brightness and easy production

Active Publication Date: 2013-02-27
扬州科丰高新产业投资开发集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Hexagonal NaYF 4 It is the matrix material with the highest up-conversion efficiency among the up-conversion materials that have been studied so far, but it requires a high synthesis temperature and will pollute the environment

Method used

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  • Ytterbium ion Yb&lt;3+&gt; activated borotungstate upconversion luminescent material and preparation method thereof
  • Ytterbium ion Yb&lt;3+&gt; activated borotungstate upconversion luminescent material and preparation method thereof
  • Ytterbium ion Yb&lt;3+&gt; activated borotungstate upconversion luminescent material and preparation method thereof

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Embodiment 1

[0035] According to the chemical formula Yb 2.85 Eu 0.15 BWO 9 The stoichiometric ratio of each element in 975nm, respectively weighed ytterbium oxide Yb 2 o 3 : 1.404 g, europium oxide Eu 2 o 3 : 0.066 g, boric acid H 3 BO 3 : 0.1623 g, tungsten oxide WO 3 : 0.597 g, ground in an agate mortar and mixed evenly, then calcined for the first time in an air atmosphere at a temperature of 550°C for 7 hours, then cooled to room temperature, and the sample was taken out. After the first calcination of the raw materials, the mixture was thoroughly mixed and ground again, and the second sintering was carried out at 750°C in an air atmosphere. The sintering time was 10 hours, cooled to room temperature, and the samples were taken out. After the raw materials were calcined for the second time, the mixture was thoroughly mixed and ground again, and then sintered for the third time at 950°C in an air atmosphere. The sintering time was 8 hours, cooled to room temperature, and the sa...

Embodiment 2

[0039] According to the chemical formula Yb 2.7 Eu 0.3 BWO 9 The stoichiometric ratio of each element in 975nm, respectively weighed ytterbium oxide Yb 2 o 3 : 1.33 g, europium oxide Eu 2 o 3 : 0.132 g, boric acid H 3 BO 3 : 0.1623 g, tungsten oxide WO 3 : 0.597 g, ground in an agate mortar and mixed evenly, then calcined for the first time in an air atmosphere at a temperature of 500°C for 6 hours, then cooled to room temperature, and the sample was taken out. After the first calcination of the raw materials, the mixture is fully mixed and ground again, and the second sintering is performed at 700°C in an air atmosphere. The sintering time is 8 hours, cooled to room temperature, and the sample is taken out. After the raw materials were calcined for the second time, the mixture was thoroughly mixed and ground again, and then sintered for the third time in an air atmosphere at 900°C for 10 hours, cooled to room temperature, and samples were taken out. After the raw mat...

Embodiment 3

[0042] According to the chemical formula Yb 2.55 Y 0.45 BWO 9 The stoichiometric ratio of each element in 975nm, respectively weighed ytterbium oxide Yb 2 o 3 : 1.256 g, yttrium oxide Y 2 o 3 : 0.127 g, boric acid H 3 BO 3 : 0.1623 g, tungsten oxide WO 3 : 0.597 g, ground in an agate mortar and mixed evenly, then calcined for the first time in an air atmosphere at a temperature of 400°C for 5 hours, then cooled to room temperature, and the sample was taken out. After the first calcination of the raw materials, the mixture is fully mixed and ground again, and the second sintering is carried out at 680°C in an air atmosphere. The sintering time is 8 hours, cooled to room temperature, and the sample is taken out. After the raw materials were calcined for the second time, the mixture was thoroughly mixed and ground again, and then sintered for the third time at 860°C in an air atmosphere. The sintering time was 9 hours, cooled to room temperature, and the samples were take...

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Abstract

The invention discloses an ytterbium ion Yb<3+> activated borotungstate upconversion luminescent material and preparation thereof. The chemical composition is shown in a general formula R3-3xYb3xBWO9, wherein R is one or more of rare earth Er<3+>, Eu<3+>, La<3+>, Y<3+>, Ce<3+>, Tm<3+>, Pr<3+>, Nd<3+>, Sm<3+>, Gd<3+> and Tb<3+>; and x is the mol percent of the doped Yb<3+>, and 0.0001<x<=1.0. The upconversion luminescent material provided by the invention is prepared by a high-temperature solid-phase method or a chemical synthesis method; the material is high in chemical purity, good in luminous mass and stable in performance; under the excitation effect of infrared laser of 975 nanometers, the material can realize green upconversion luminescence; and the luminescent intensity of the material can be increased with the increase of the energy intensity of an excitation diode. Besides, the preparation process of the material is simple and pollution-free, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a luminescent material and a preparation method thereof, in particular to a ytterbium ion Yb 3+ The activated borotungstate up-conversion luminescent material and its preparation method application belong to the field of luminescent material and its preparation process in luminescence physics. Background technique [0002] Up-conversion luminescence refers to the generation of short-wavelength light emission under the excitation of long-wavelength light during the excitation process of photoluminescence. Up-conversion luminescent material is an important functional material. Its special properties make it have broad application prospects in many fields such as laser technology, optical fiber communication technology, fluorescent probe, three-dimensional display, infrared detection technology and anti-counterfeiting. Therefore, it is of great significance to prepare up-conversion luminescent materials with good performance. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78
Inventor 黄彦林关莹秦琳陶正旭
Owner 扬州科丰高新产业投资开发集团有限公司
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