Ag@SiO<sub>2</sub>核壳纳米颗粒对Eu-PMMA薄膜的发光增强效应

龙江迷; 陈晓波; 赵国营; 李永良; 郭敬华; 王杰亮; 李崧; 刘泉林

doi:10.37188/CO.2021-0013

Volume 14 Issue 6

Nov. 2021

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Chinese Optics > 2021 > 14(6): 1341-1347.

LONG Jiang-mi, CHEN Xiao-bo, ZHAO Guo-ying, LI Yong-liang, GUO Jing-hua, WANG Jie-liang, LI Song, LIU Quan-lin. Luminescence enhancement effect of Ag@SiO2 coreshell nanoparticles on Eu-PMMA films[J]. Chinese Optics, 2021, 14(6): 1341-1347. doi: 10.37188/CO.2021-0013

Citation:

LONG Jiang-mi, CHEN Xiao-bo, ZHAO Guo-ying, LI Yong-liang, GUO Jing-hua, WANG Jie-liang, LI Song, LIU Quan-lin. Luminescence enhancement effect of Ag@SiO₂ coreshell nanoparticles on Eu-PMMA films[J]. Chinese Optics, 2021, 14(6): 1341-1347. doi: 10.37188/CO.2021-0013

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Luminescence enhancement effect of Ag@SiO₂ coreshell nanoparticles on Eu-PMMA films

doi: 10.37188/CO.2021-0013

1.
Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal University, Beijing 100875, China
2.
School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 200235, China
3.
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

Funds: Supported by the National Natural Science Foundation of China (No. 51972020, No. 51472028); the Fundamental Research Funds for the Central Universities of China (No. 2017TZ01)

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Corresponding author: chen78xb@sina.com
Received Date: 27 Jan 2021
Rev Recd Date: 22 Feb 2021

Available Online: 15 May 2021

Publish Date: 19 Nov 2021

Abstract

Abstract

In order to improve the luminescent properties of rare earth ions, precious metal nanoparticles were doped into rare earth luminescent materials. Metal plasma resonance can produce local electric field, which acts on the luminescence process of rare earth ions, and can achieve the luminescence enhancement. Ag@SiO₂ core-shell nanoparticles can effectively control the distance between metal Ag and rare earth ions, which can not only enhance the plasmonic resonance effect, but also avoid the fluorescence quenching caused by non-radiation energy transfer when they are too close to the emission center. Firstly, the Ag@SiO₂ nanoparticles with different concentrations were dropped on the quartz wafers by drop-casting method. Then, the Eu(dbm)₃Phen:PMMA: dichloromethane mixed solution was spin-coated to prepare the Eu-PMMA composite film. The morphology characterization and luminescence measurement of the samples showed that the luminescence intensity of the film doped with Ag@SiO₂ nanoparticles was enhanced, and the maximum enhancement factor of the measured excitation spectrum was 2.50 times, and the maximum enhancement factor of the emission spectrum was 2.15 times. The results of the fluorescence lifetime measurement of the sample indicated that the luminescence lifetime of the film containing Ag@SiO₂ nanoparticles was also prolonged. The doping of Ag@SiO₂ nanoparticles in the rare earth luminescent materials shows a good enhancement, and the experimental method is highly operable. It is a promising method to enhance the luminescent intensity of rare earth luminescent materials.
- rare earth ion luminescence,
- plasma enhancement,
- Ag@SiO₂ core-shell structure,
- PMMA

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References(28)

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