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Codopant ion-induced tunable upconversion emission in β-NaYF4:Yb3+/Tm3+ nanorods.

Identifieur interne : 000327 ( PubMed/Corpus ); précédent : 000326; suivant : 000328

Codopant ion-induced tunable upconversion emission in β-NaYF4:Yb3+/Tm3+ nanorods.

Auteurs : Dangli Gao ; Xiangyu Zhang ; Hairong Zheng ; Peng Shi ; Long Li ; Yawen Ling

Source :

RBID : pubmed:23165284

English descriptors

Abstract

An innovative route to tune upconversion (UC) emission in β-NaYF(4):Yb(3+)/Tm(3+) nanorods through codoping a third rare-earth ion upon continuous wave excitation near 976 nm is reported. The dependence of UC emission on codopant concentration and environment temperature shows that tailored local environment and readjustable depopulation of excited-state ions are responsible for the tuning of UC luminescence. Codopant ions introduce a new distribution of active ions and a modified distance between Tm(3+) and Yb(3+) ions, making UC systems more sensitive to impurity ions than downconversion systems.

DOI: 10.1039/c2dt31814h
PubMed: 23165284

Links to Exploration step

pubmed:23165284

Le document en format XML

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