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Erbium-ytterbium co-doped scandium molybdate thermally enhanced up-down conversion luminescent material and preparation method thereof

A luminescent material, scandium molybdate technology, applied in luminescent materials, chemical instruments and methods, photovoltaic power generation, etc., can solve the problems of high energy consumption and high reaction temperature, and achieve low energy consumption, good chemical stability, phase single effect

Active Publication Date: 2022-07-08
JIANGXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process of phosphor powder prepared by solid phase method has high reaction temperature and high energy consumption.

Method used

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  • Erbium-ytterbium co-doped scandium molybdate thermally enhanced up-down conversion luminescent material and preparation method thereof
  • Erbium-ytterbium co-doped scandium molybdate thermally enhanced up-down conversion luminescent material and preparation method thereof
  • Erbium-ytterbium co-doped scandium molybdate thermally enhanced up-down conversion luminescent material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] An erbium-ytterbium co-doped scandium molybdate thermally enhanced up-down conversion luminescent material, comprising the following components: Sc(NO 3 ) 3 ·6H 2 O, 0.002-0.16 mole ratio of Er (NO 3 ) 3 ·6H 2 O, 0.2-0.5 mole ratio of Yb (NO 3 ) 3 ·6H 2 O and 3 / 7 mole ratio (NH 4 ) 6 Mo 7 O 24 ·4H 2 O.

[0035] A preparation method of erbium-ytterbium co-doped scandium molybdate thermally enhanced up-down conversion luminescent material, comprising the following steps:

[0036] S1, weigh the appropriate molar ratio of Sc(NO 3 ) 3 ·6H 2 O, Yb (NO 3 ) 3 ·6H 2 O and Er (NO 3 ) 3 ·6H 2 O inorganic salt, and put it into a beaker, add an appropriate amount of distilled water, and stir to fully dissolve the raw materials into a uniform mixed solution;

[0037] S2, put an appropriate amount of citric acid into the mixed solution obtained in step S1, and stir evenly to obtain a new mixed solution;

[0038] S3, weigh the appropriate molar ratio of (NH 4 ) ...

Embodiment 2

[0051] An erbium-ytterbium co-doped scandium molybdate thermally enhanced up-down conversion luminescent material, comprising the following components: 2.1422 g of Sc(NO 3 ) 3 ·6H 2 O, 0.0370g Er(NO 3 ) 3 ·6H 2 O, 0.7474g mole ratio of Yb (NO 3 ) 3 ·6H 2 O and 2.1186g of (NH 4 ) 6 Mo 7 O 24 ·4H 2 O.

[0052] Prepare according to the steps in Example 1 (wherein the amount of citric acid is 8.4056 g) to obtain the finished material.

[0053] like figure 1 As shown, it is an erbium ytterbium co-doped scandium molybdate luminescent material ((Sc 0.79 Er 0.01 Yb 0.2 ) 2 (MoO 4 ) 3 ) of the variable temperature XRD pattern, from figure 1 It can be seen that the light-emitting material is composed of a negative expansion material.

[0054] like figure 2 Shown is the scanning electron microscope photo of the erbium ytterbium co-doped scandium molybdate luminescent material, obtained from figure 2 The particle size is known to be 1-4 μm.

[0055] like image ...

Embodiment 3

[0059] The erbium ytterbium co-doped scandium molybdate ((Sc 0.8-x Er x Yb 0.2 ) 2 (MoO 4 ) 3 ) luminescent material, the details are as follows: according to the element molar ratio Sc:Er:Yb:Mo=(1.6-2x):2x:0.4:3, accurately weigh Sc(NO 3 ) 3 ·6H 2 O, Yb (NO 3 ) 3 ·6H 2 O, Er (NO 3 ) 3 ·6H 2 O and (NH 4 ) 6 Mo 7 O 24 ·4H 2 O, where x is 0.001, 0.005, 0.01, 0.02, 0.04, and 0.08, respectively, and the production steps are the same as those in Example 1 to obtain the corresponding finished material.

[0060] like Figure 5 Shown is the erbium-ytterbium co-doped scandium molybdate luminescent material (Sc 0.8-x Er x Yb 0.2 ) 2 (MoO 4 ) 3 (0.001≤x≤0.08) Upconversion emission spectra at different erbium ion doping concentrations.

[0061] according to Figure 5 It is known that the erbium-ytterbium co-doped scandium molybdate light-emitting material (Sc 0.8-x Er x Yb 0.2 ) 2 (MoO 4 ) 3 When the erbium ion doping concentration is about x=0.01, the u...

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Abstract

The invention provides an erbium-ytterbium co-doped scandium molybdate thermally enhanced up-down conversion luminescent material and a preparation method thereof, belonging to the technical field of luminescent materials, comprising the following components: Sc(NO 3 ) 3 ·6H 2 O, 0.002-0.16 mole ratio of Er (NO 3 ) 3 ·6H 2 O, 0.2-0.5 mole ratio of Yb (NO 3 ) 3 ·6H 2 O and 3 / 7 mole ratio (NH 4 ) 6 Mo 7 O 24 ·4H 2 O, and the sol-gel method was used to complete the erbium-ytterbium co-doped scandium molybdate ((Sc 0.99‑ y Er 0.01 Yb y ) 2 (MoO 4 ) 3 ) preparation of luminescent material, the material can realize that under the excitation of a 980nm light source, the material can simultaneously realize thermally enhanced visible light up-conversion at 500-600nm and near-infrared down-conversion radiation at 1550nm. The material has the advantages of low energy consumption for preparation, small powder particles, single phase, good chemical stability, and thermally enhanced luminescence under the excitation of 980nm infrared light, which can meet the requirements of practical application fields such as optical temperature sensing and optical communication. with broadly application foreground.

Description

technical field [0001] One or more embodiments of the present specification relate to the field of luminescent materials and preparation methods, and in particular, to an erbium ytterbium co-doped scandium molybdate thermally enhanced up-down conversion luminescent material and a preparation method thereof. Background technique [0002] Existing inorganic light-emitting materials are commonly classified into up-conversion light-emitting materials and down-conversion light-emitting materials. Up-conversion luminescent materials are mainly the process of converting low-energy long-wavelength photons into high-energy short-wavelength light. Down-conversion luminescent materials are mainly the process of converting high-energy short-wavelength photons into low-energy long-wavelength light. Down-conversion luminescent materials are currently mainly irradiated by ultraviolet and blue light to produce visible light emission. The above two materials are widely used in 3D stereoscop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78
CPCC09K11/7776Y02E10/52
Inventor 廖金生王明华黄海平邹征刚陈景林温和瑞
Owner JIANGXI UNIV OF SCI & TECH