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Structural and luminescent properties of (Eu,Tb) PO_4·H_2O nanorods/nanowires prepared by microwave technique 被引量:2

Structural and luminescent properties of(Eu,Tb) PO_4·H_2O nanorods/nanowires prepared by microwave technique
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摘要 Nanowires/nanorods of europium/terbium orthophosphate monohydrate with Eu^3+ concentration of 6, 11, and 20 at.% were prepared by microwave synthesis method. The effects of Eu^3+ doping concentration on structure, morphology and optical properties of nanomaterials were also investigated. The results showed that, for all studied Eu^3+ doping concentrations, a single-crystalline phase of rhabdophane-type (Eu,Tb)PO4·H2O nanowires/nanorods was obtained by using microwave heating of an aqueous solution of terbium(Ⅲ) nitrate, europium(Ⅲ) nitrate and NH4H2PO4 with pH=2. The length and width of these nanowires/nanorods ranged from 150 to 300 nm and from 10 to 50 nm, respectively. The evidence of energy transfer from Tb^3+ to Eu^3+ due to the energy overlap between the donor Tb^3+ and the acceptor Eu^3+was observed obviously via a significant enhancement in the luminescent intensity of Eu^3+. Keywords: Nanowires/nanorods of europium/terbium orthophosphate monohydrate with Eu^3+ concentration of 6, 11, and 20 at.% were prepared by microwave synthesis method. The effects of Eu^3+ doping concentration on structure, morphology and optical properties of nanomaterials were also investigated. The results showed that, for all studied Eu^3+ doping concentrations, a single-crystalline phase of rhabdophane-type (Eu,Tb)PO4·H2O nanowires/nanorods was obtained by using microwave heating of an aqueous solution of terbium(Ⅲ) nitrate, europium(Ⅲ) nitrate and NH4H2PO4 with pH=2. The length and width of these nanowires/nanorods ranged from 150 to 300 nm and from 10 to 50 nm, respectively. The evidence of energy transfer from Tb^3+ to Eu^3+ due to the energy overlap between the donor Tb^3+ and the acceptor Eu^3+was observed obviously via a significant enhancement in the luminescent intensity of Eu^3+. Keywords:
出处 《Journal of Rare Earths》 SCIE EI CAS CSCD 2011年第12期1170-1173,共4页 稀土学报(英文版)
基金 Project supported by Vietnamese National Foundation for Science and Technology Development (NAFOSTED) (103.06-2010.16)
关键词 microwave technique nanowires/nanorods energy transfer fluorescence spectroscopy rare earths microwave technique nanowires/nanorods energy transfer fluorescence spectroscopy rare earths
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参考文献23

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