Journal
PHYSICA B-CONDENSED MATTER
Volume 405, Issue 10, Pages 2436-2439Publisher
ELSEVIER
DOI: 10.1016/j.physb.2010.03.003
Keywords
Phosphor; Photoluminescence; Energy transfer
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Funding
- Korea government (MEST) [2009-0078682]
- Scientific Research Foundation for Advanced Talents of Central South University of Forestry and Technology [07Y023]
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Sr2LiSiO4F co-doped with Ce3+, Mn2+ have been synthesized by means of solid state reactions. Their photoluminescence (PL) emission spectra, excitation spectra and the decay profiles of Ce3+ emission have been measured at room temperature. The emission peak around 410 nm is ascribed to the 5d(1) to F-2(5/2) and F-2(7/2) transitions of Ce3+ ions, while the peak around 680 nm is ascribed to the T-4(1)-(6)A(1) transition of Mn2+ ions. The decay rate of the 5d state within Ce3+ ion under 355 nm laser excitation becomes faster with the increase of Mn2+ concentration. The analysis of the observed spectra confirms that there exists energy transfer from Ce3+ to Mn2+. (C) 2010 Elsevier B.V. All rights reserved.
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