Host sensitized NIR emission in rare-earth doped NaY(MoO4)2 phosphors
Intense near-infrared emitting phosphors NaY(MoO4)2 activated with Ln3+ (Ln = Nd and Yb) were synthesized by a conventional solid state reaction and characterized with X-ray diffraction, photoluminescence emission and excitation spectra. Sensitization of Ln3+ (Ln = Nd and Yb) from the host with diff...
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Published in | Journal of alloys and compounds Vol. 732; pp. 64 - 69 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
25.01.2018
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Subjects | |
Online Access | Get full text |
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Summary: | Intense near-infrared emitting phosphors NaY(MoO4)2 activated with Ln3+ (Ln = Nd and Yb) were synthesized by a conventional solid state reaction and characterized with X-ray diffraction, photoluminescence emission and excitation spectra. Sensitization of Ln3+ (Ln = Nd and Yb) from the host with different doping concentration of Ln3+ were investigated. Under UV excitation, intense and characteristic emission of Nd3+ at 897, 1064 and 1347 nm and Yb3+ emission 997 nm, sensitized by MoO4−2 group were observed. The host excitation is in the UV region of 250–380 nm. An efficient energy transfer from MoO4−2→Nd3+, MoO4−2→Yb3+ and MoO4−2→Nd3+→Yb3+ were observed. The two step energy transfer process from MoO4−2→Nd3+→Yb3+ is also discussed. The excellent luminescence properties of the Nd3+ and Yb3+ single doped and Nd3+–Yb3+ codoped NaY(MoO4)2 phosphor indicates its potential application in modern lasers and photonic technology.
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•NaY(MoO4)2:Nd3+, Yb3+ synthesized by conventional solid state reaction.•Intense Nd3+ and Yb3+ NIR emissions observed.•Sensitization from the MoO4−2.•The possible energy transfer mechanisms discussed. |
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ISSN: | 0925-8388 1873-4669 |
DOI: | 10.1016/j.jallcom.2017.10.169 |