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Enhanced orange–red emission of SrZn 2 (PO 4 ) 2 :Sm 3+ via codoping Eu 2+ as a sensitizer
Author(s) -
Wang Zhijun,
Lou Shuqin,
Li Panlai
Publication year - 2015
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2856
Subject(s) - phosphor , ion , emission intensity , energy transfer , chemistry , analytical chemistry (journal) , emission spectrum , doping , materials science , spectral line , optoelectronics , physics , organic chemistry , chromatography , astronomy , molecular physics
A series of Eu 2+ ‐, Sm 3+ ‐ and Eu 2+ /Sm 3+ ‐doped SrZn 2 (PO 4 ) 2 samples were synthesized using a solid‐state reaction. SrZn 2 (PO 4 ) 2 :Eu 2+ presented a broad emission band due to 4f 6 5d–4f 7 transition of the Eu 2+ ion. The spectra of SrZn 2 (PO 4 ) 2 :Sm sintered in air and H 2 /N 2 were identical in every aspect, except for a very small difference in intensity. A Eu 2+ –Sm 3+ energy transfer scheme was proposed to realize the sensitization of Sm 3+ ion emission by Eu 2+ ions, and UV‐convertible Sm 3+ ‐activated red phosphor was obtained in SrZn 2 (PO 4 ) 2 :Eu 2+ , Sm 3+ . Copyright © 2015 John Wiley & Sons, Ltd.
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