Near infrared long-persistent phosphorescence in SrAl2 O 4: Eu2+, Dy3+, Er3+ phosphors based on persistent energy transfer

Naiyin Yu*, Feng Liu, Xufan Li, Zhengwei Pan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

110 Scopus citations

Abstract

Eu2+, Dy3+, and Er3+ ions codoped SrAl2 O4 phosphors with near infrared (NIR) (at 1530 nm) long-persistent phosphorescence were synthesized by a combustion method. The NIR phosphorescence emission was realized through a persistent energy transfer process from Eu2+ ions to Er3+ ions. Optimal Er 3+ concentration for the maximum energy transfer efficiency was determined and NIR phosphorescence persisting for more than 10 min was achieved. A model of charge trapping and energy transfer process among Eu, Dy, and Er ions in SrAl2 O4 host was proposed.

Original languageEnglish
Article number231110
JournalApplied Physics Letters
Volume95
Issue number23
DOIs
StatePublished - 2009
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the U.S. Office of Naval Research (Contract No. N004315578).

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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