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Synthesis of colloidal LaF_3: 0.04Yb^(3+), 0.01Er^(3+) nanocrystals with green upconversion luminescence 被引量:1

Synthesis of colloidal LaF_3: 0.04Yb^(3+), 0.01Er^(3+) nanocrystals with green upconversion luminescence
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摘要 A synthesis of LaF3:0.04Yb^3+,0.01Er^3+ nanocrystals with oleic acid as a capping ligand was presemed. The X-Ray Diffraction (XRD) pattern indicated that the power was a single hexagonal phase. Transmission Electron Microscopy (TEM) demonstrated that the average size of the nanocrystals was less than 10 nm, with a narrow size distribution. The nanocrystals were dispersible in nonpolar solvents and form a fully transparent colloidal solution, and the solution was stable for several months without any aggregates. The Yb^3+-Er^3+ codoped nanocrystal colloidal solution exhibited a bright green upconversion fluorescence under 980 nm excitation from a diode laser. The nanocrystals were potentially applicable in biolabeling and bioimaging. A synthesis of LaF3:0.04Yb^3+,0.01Er^3+ nanocrystals with oleic acid as a capping ligand was presemed. The X-Ray Diffraction (XRD) pattern indicated that the power was a single hexagonal phase. Transmission Electron Microscopy (TEM) demonstrated that the average size of the nanocrystals was less than 10 nm, with a narrow size distribution. The nanocrystals were dispersible in nonpolar solvents and form a fully transparent colloidal solution, and the solution was stable for several months without any aggregates. The Yb^3+-Er^3+ codoped nanocrystal colloidal solution exhibited a bright green upconversion fluorescence under 980 nm excitation from a diode laser. The nanocrystals were potentially applicable in biolabeling and bioimaging.
出处 《Journal of Rare Earths》 SCIE EI CAS CSCD 2008年第1期40-43,共4页 稀土学报(英文版)
基金 Project supported by the National Natural Science Foundation of China (10474096 50672030)
关键词 upconversion luminescence COLLOIDAL LaF3:0.04Yb^3+ 0.01Er^3+ NANOCRYSTALS rare earths upconversion luminescence colloidal LaF3:0.04Yb^3+,0.01Er^3+ nanocrystals rare earths
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参考文献11

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二级参考文献1

  • 1M. Sural,A. Ghosh.New fluoride glasses in the system ZnF2-AlF3-PbF2-LiF[J].Journal of Materials Science Letters.2000(1)

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