Upconversion luminescence selectively enhanced upconversion luminescent material and preparation method thereof

A luminescent material and selective technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve problems such as difficult integration, complicated preparation, and inflexible operation, and achieve localized electric field enhancement, improved utilization efficiency, and enhanced up-conversion glowing effect

Inactive Publication Date: 2019-03-12
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the above method requires the introduction of complex optical devices, fine array structure, complicated preparation, inflexible operation, and difficult integration.
In addition, the enhan

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  • Upconversion luminescence selectively enhanced upconversion luminescent material and preparation method thereof
  • Upconversion luminescence selectively enhanced upconversion luminescent material and preparation method thereof
  • Upconversion luminescence selectively enhanced upconversion luminescent material and preparation method thereof

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preparation example Construction

[0035] The present invention also provides a preparation method of the above-mentioned up-conversion luminescent material with enhanced up-conversion luminescence selectivity, comprising the following steps:

[0036]Depositing a layer of gold nano film on the surface of the micron optical fiber glass core, soaking the surface of the gold nano film with an up-conversion nano particle solution, and drying to obtain an up-conversion luminescent material with enhanced up-conversion luminescence selectivity.

[0037] In the present invention, the deposition method is preferably sputter coating. In the present invention, the sputtering current of the sputter coating is preferably 10-20 mA, more preferably 15 mA, and the sputtering time is preferably 1-5 min, more preferably 2 min. In the present invention, the sputter coating equipment is preferably an ETD2000 / 3000 sputter coating machine.

[0038] In the present invention, the concentration of the up-conversion nanoparticle soluti...

Embodiment 1

[0044] 1) Use a fiber stripper to strip the buffer layer and the polymer interlayer of the optical fiber to obtain the fiber core; then clamp one end of the fiber core with tweezers and place it in the outer flame of an alcohol blowtorch for 1 minute to reach its melting point, then slowly pull the tweezers to pull The fiber is stretched until the diameter is reduced to 3 microns to obtain a micron optical fiber glass core.

[0045] 2) Fix the prepared micron optical fiber on the glass substrate, place it in the ETD 2000 / 3000 sputter coater, set the sputtering current and sputtering time to 15 mA and 2 minutes respectively, and the gold nano film It was successfully deposited on the surface of the micron optical fiber with a thickness of 18 nanometers.

[0046] 3) Take out the sample in step 2) and place it on the experimental bench, use a syringe to convert the aqueous solution of nanoparticles into hexagonal (β) phase NaYF 4 :Yb 3+ ,Er3 + Nanoparticles (NaYF 4 / Yb / Er=78:...

Embodiment 2

[0057] 1) Use a fiber stripper to strip the buffer layer and the polymer interlayer of the optical fiber to obtain the fiber core; then clamp one end of the fiber core with tweezers and place it in the outer flame of an alcohol blowtorch for 1 minute to reach its melting point, then slowly pull the tweezers to pull The fiber is stretched until the diameter is reduced by 3 micrometers to obtain a micrometer optical fiber glass core.

[0058] 2) Fix the prepared micron optical fiber glass core on the glass substrate, place it in the ETD2000 / 3000 sputter coater, set the sputtering current and sputtering time to 15 mA and 1 minute respectively, the gold nanometer The thin film was successfully deposited on the surface of the micron optical fiber with a thickness of 10 nanometers.

[0059] 3) Take out the sample in step 2) and place it on the experimental bench, use a syringe to convert the aqueous solution of nanoparticles into hexagonal (β) phase NaYF 4 :Yb 3+ ,Er3 + Nanoparti...

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Abstract

The invention provides an upconversion luminescence selectively enhanced upconversion luminescent material, belonging to the technical field of upconversion luminescent materials. The upconversion luminescence selectively enhanced upconversion luminescent material is prepared by using a micron optical fiber glass core as a substrate; a gold nano-film is deposited on the surface of the substrate asa plasmonic structure, and up-conversion nanoparticles are uniformly dispersed on the surface of the gold nano-film, so that the upconversion luminescence selectively enhanced upconversion luminescent material is formed. The upconversion luminescence selectively enhanced upconversion luminescent material provided by the invention realizes the selective enhancement of the upconversion luminescenceby means of waveguide excitation as well as the interaction among incident light, the gold nano-film and the up-conversion nanoparticles.

Description

technical field [0001] The invention relates to the technical field of up-conversion luminescent materials, in particular to an up-conversion luminescent material with enhanced up-conversion luminescence selectivity and a preparation method thereof. Background technique [0002] Stokes' law holds that materials can only be excited by high-energy light and emit low-energy light, that is, light with a short wavelength and high frequency excites light with a long wavelength and low frequency. However, some materials can achieve a luminous effect that is just opposite to the above-mentioned law. We call it anti-Stokes luminescence, also known as up-conversion luminescence. So far, up-conversion luminescence has occurred in compounds doped with rare earth ions, mainly fluorides, oxides, sulfur-containing compounds, oxyfluorides, and halides. [0003] Solar energy is the most abundant clean energy available to human beings. So far, infrared light, which occupies most of the energ...

Claims

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Application Information

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IPC IPC(8): C09K11/58
CPCC09K11/58
Inventor 李宝军李娟张伟娜
Owner JINAN UNIVERSITY
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