Lithium-erbium-ytterbium triple-doped sodium niobate upconversion material as well as preparation method and application thereof

A conversion material and three-doping technology, applied in the field of optical materials, can solve the problems of low fluorescence efficiency, achieve simple preparation process, improve up-conversion luminous intensity, and enhance the effect of up-conversion luminous intensity

Inactive Publication Date: 2018-12-28
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and deficiencies of low fluorescence efficiency of up-conversion materials in the prior art, and provide a preparation method and application of lithium, erbium and ytterbium three-doped sodium niobate up-conversion materials

Method used

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  • Lithium-erbium-ytterbium triple-doped sodium niobate upconversion material as well as preparation method and application thereof
  • Lithium-erbium-ytterbium triple-doped sodium niobate upconversion material as well as preparation method and application thereof

Examples

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Embodiment 1

[0032] This embodiment provides a lithium, erbium and ytterbium tri-doped sodium niobate up-conversion material, which is prepared by the following preparation method.

[0033] 1. Measure 40mL of deionized water and 40mL of ethylene glycol in a ratio of 1:1 and mix evenly, marking it as the mixture A.

[0034] 2. Dissolve 3.39mM ytterbium nitrate pentahydrate and 1.13mM erbium nitrate pentahydrate in A, and add 0.125M lithium hydroxide monohydrate, 1.875M sodium hydroxide and 0.06M niobium pentoxide in sequence, Stir well.

[0035] 3. Move the above mixed solution into a reaction kettle, place it in a drying oven at 270°C and heat it for 24 hours.

[0036] 4. After cooling to room temperature, filter the mixed solution in the reactor, and dry the obtained solid powder at 70° C. for 24 hours.

[0037] 5. Calcining the dried solid powder at 1050° C. for 2 hours.

[0038] figure 1 It is the XRD figure of the lithium, erbium and ytterbium triple-doped sodium niobate up-convers...

Embodiment 2

[0040] This embodiment provides a lithium, erbium and ytterbium tri-doped sodium niobate up-conversion material. The preparation method is basically the same as that in Example 1, except that the total amount of niobium pentoxide in step 2 is 0.064M, the total amount of erbium nitrate pentahydrate is 0.195mM, and the total amount of ytterbium nitrate pentahydrate is 1.925mM. The performance of the lithium, erbium and ytterbium tri-doped sodium niobate up-conversion material prepared by this method is similar to that of Example 1.

Embodiment 3

[0042] This embodiment provides a lithium, erbium and ytterbium tri-doped sodium niobate up-conversion material. The preparation method is basically the same as that in Example 1, except that the total amount of niobium pentoxide in step 2 is 0.0624M, the total amount of erbium nitrate pentahydrate is 1.155mM, and the total amount of ytterbium nitrate pentahydrate is 3.436mM. The performance of the lithium, erbium and ytterbium tri-doped sodium niobate up-conversion material prepared by this method is similar to that of Example 1.

[0043] The performance of the lithium, erbium and ytterbium tri-doped sodium niobate up-conversion material prepared by this method is similar to that of Example 1.

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Abstract

The invention relates to a lithium-erbium-ytterbium triple-doped sodium niobate upconversion material as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, dissolving an erbium source, a ytterbium source, a lithium source and a sodium source into a solvent so as to obtain a mixed solution, wherein the solvent is a mixed solvent of waterand ethylene glycol; S2, enabling the mixed solution to react for 24-48 hours at 260-270 DEG C, filtering, and drying so as to obtain precipitate; S3, calcining the precipitate at 900-1050 DEG C for 0.5-2 hours, thereby obtaining the lithium-erbium-ytterbium triple-doped sodium niobate upconversion material. The lithium-erbium-ytterbium triple-doped sodium niobate upconversion material is preparedaccording to a solvent thermal method, and is simple in preparation process; under stimulation of laser of 980 nm, the laser of 980 nm can be effectively converted into upconversion red light and green light by using the lithium-erbium-ytterbium triple-doped sodium niobate upconversion material, and in addition, the light emission strength of upconversion red and green light can be effectively improved by the lithium ions.

Description

technical field [0001] The invention belongs to the technical field of optical materials, and in particular relates to a lithium, erbium and ytterbium triple-doped sodium niobate up-conversion material and its preparation method and application. Background technique [0002] Up-conversion fluorescence refers to the process in which rare earth ions doped in the crystal lattice convert two or more long-wavelength photons into a single short-wavelength photon, which can be widely used in biomedical imaging, display, lighting and temperature sensing, etc. field is. However, low upconversion efficiency is the main bottleneck restricting the practical application of rare earth ion-doped upconversion materials, such as low fluorescence intensity restricting the range of temperature detection, the signal-to-noise ratio of biological imaging, and the output power of lasers. Ytterbium ion (Yb 3+ ) sensitization mechanism is currently the most common way to enhance the efficiency of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/67
CPCC09K11/7769
Inventor 唐巽泽钱艳楠张海燕
Owner GUANGDONG UNIV OF TECH
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