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A significant enhancement emission of Sm3+–Ag+ codoped silicate glasses under UV excitation

Published online by Cambridge University Press:  14 August 2018

Liaolin Zhang ,
Yu Xia ,
Xiao Shen  and
Wei Wei
Liaolin Zhang*
Affiliation:
School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China; and State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510640, China
Yu Xia
Affiliation:
School of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
Xiao Shen
Affiliation:
School of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
Wei Wei
Affiliation:
School of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

In this paper, Sm3+-doped silicate glasses containing AgNO3 were obtained by the common melting quenching method. Influence of AgNO3 concentration on the absorption and emission characteristics of Sm3+ were systematically investigated. With the increase of AgNO3 content from 0 to 3.0 wt%, the ultraviolet region absorption edge shows a slight blue-shift from 275 to 260 nm. Exciting by 255 nm, the visible emission intensity of Sm3+-doped silicate glass containing 0.5 wt% AgNO3 was about 31 times stronger than that of Sm3+ singly doped silicate glass. Fluorescence decay curves for the visible emission followed double exponential decay. Two fluorescence lifetimes were obtained, one was about 7–20 μs which was comparable with the lifetimes of 350 nm emission which derived from Ag+, another was about 2 ms which was comparable with that of the visible emission from Sm3+ excited by 401 nm. Thus, the significant enhancement visible emission of Sm3+ excited by 255 nm can be ascribed to the energy transfer from Ag+ to Sm3+.

Keywords

energy transfersilver ionsfluorescence
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 16 , 28 August 2018 , pp. 2434 - 2439
Copyright
Copyright © Materials Research Society 2018 

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Footnotes

b)

These authors contributed equally to this work.

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