Energy transfer in co-and tri-doped Y3Al5O12 phosphors

Single-doped（Ce3＋,Tb3＋）, co-doped（Ce3＋-Tb3＋, Ce3＋-Yb3＋, Tb3＋-Yb3＋） and tri-doped（Ce3＋-Tb3＋-Yb3＋） Y3Al5O12 phosphors were synthesized by a solid-state reaction method. The XRD, excitation and emission spectra and the fluorescence lifetime of the samples were measured. The energy transfer mechanism wa...

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Bibliographic Details
Published inJournal of rare earths Vol. 35; no. 8; pp. 775 - 782
Main Authors Kumar, K. Santhosh, LOU, Chaogang, XIE, Yufei, HU, Lin, Gowri Manohari, A., XIAO, Dong, YE, Huiqi, TANG, Liang, Pribat, Didier
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.2017
Subjects
Ce3+-Tb3+-Yb3
down conversion
energy transfer
rare earths
Y3Al5O12
YAG phosphors
YAG荧光粉
Yb3
固相反应法
能量传递机理
能量转换效率
能量转移
钇铝石榴石
YAG phosphors
Ce3+-Tb3+-Yb3
energy transfer
down conversion
rare earths
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Summary:Single-doped（Ce3＋,Tb3＋）, co-doped（Ce3＋-Tb3＋, Ce3＋-Yb3＋, Tb3＋-Yb3＋） and tri-doped（Ce3＋-Tb3＋-Yb3＋） Y3Al5O12 phosphors were synthesized by a solid-state reaction method. The XRD, excitation and emission spectra and the fluorescence lifetime of the samples were measured. The energy transfer mechanism was also investigated. The results showed that the energy transfer efficiency from Tb3＋ to Ce3＋ was 51% and the energy transfer efficiency from Ce3＋ to Yb3＋ was 63.1%. Concomitantly, both were more efficient than that from Ce3＋ to Tb3＋（7%） and from Tb3＋ to Yb3＋（10.2%）. Also, the Yb3＋ ions received energy mainly from Ce3＋ ions in Ce3＋-Tb3＋-Yb3＋ tri-doped Y3Al5O12 phosphors. Among these materials, Ce3＋-Yb3＋ co-doped YAG phosphors are a better choice than others as a down-conversion material due to their higher energy transfer efficiency.
Bibliography:Ce3＋-Tb3＋-Yb3＋;YAG phosphors;energy transfer;down conversion;rare earths
11-2788/TF
Single-doped（Ce3＋,Tb3＋）, co-doped（Ce3＋-Tb3＋, Ce3＋-Yb3＋, Tb3＋-Yb3＋） and tri-doped（Ce3＋-Tb3＋-Yb3＋） Y3Al5O12 phosphors were synthesized by a solid-state reaction method. The XRD, excitation and emission spectra and the fluorescence lifetime of the samples were measured. The energy transfer mechanism was also investigated. The results showed that the energy transfer efficiency from Tb3＋ to Ce3＋ was 51% and the energy transfer efficiency from Ce3＋ to Yb3＋ was 63.1%. Concomitantly, both were more efficient than that from Ce3＋ to Tb3＋（7%） and from Tb3＋ to Yb3＋（10.2%）. Also, the Yb3＋ ions received energy mainly from Ce3＋ ions in Ce3＋-Tb3＋-Yb3＋ tri-doped Y3Al5O12 phosphors. Among these materials, Ce3＋-Yb3＋ co-doped YAG phosphors are a better choice than others as a down-conversion material due to their higher energy transfer efficiency.
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(17)60975-X