The enhanced 1830 nm emission in Yb/Tm:NaYF^sub 4^@NaYF^sub 4^ active-core/inert-shell nanocrystals

The enhanced 1830 nm emission in Yb/Tm:NaYF^sub 4^@NaYF^sub 4^ active-core/inert-shell nanocrystals

The strong 1830 nm emission is realized in Yb/Tm:NaYF4@Yb:NaYF4 core/shell nanocrystals for the first time. The optimal Tm3+ concentration, shell thickness and composition respectively are 2 mol%, 6.5 nm and inert NaYF4. In comparison with Yb/Tm:NaYF4 nanocrystals, the luminescence intensity of Yb/T...

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Bibliographic Details
Published in:Materials letters Vol. 189; p. 35
Main Authors: Lei, Lei, Wu, Ruozhen, Zhou, Jiajia, Zhang, Shengjun, Xiao, Zhen, Zhang, Junjie, Xu, Shiqing
Format: Journal Article
Language:English
Published: Amsterdam Elsevier BV 15-02-2017
Subjects:
Emission
Luminescence
Materials science
Nanocrystals
Online Access:Get full text
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Summary:The strong 1830 nm emission is realized in Yb/Tm:NaYF4@Yb:NaYF4 core/shell nanocrystals for the first time. The optimal Tm3+ concentration, shell thickness and composition respectively are 2 mol%, 6.5 nm and inert NaYF4. In comparison with Yb/Tm:NaYF4 nanocrystals, the luminescence intensity of Yb/Tm:NaYF4@NaYF4 core/shell nanocrystals enhances about 160 times.
ISSN:0167-577X
1873-4979