Synthesis of colloidal LaF3: 0.04Yb3+, 0.01Er3+ nanocrystals with green upconversion luminescence
来源期刊：Journal of Rare Earths2008年第1期
论文作者：王 艳 秦伟平 张继森 曹春燕 张继双 金叶
文章页码：40 - 43
摘 要：A synthesis of LaF3:0.04Yb3+,0.01Er3+ nanocrystals with oleic acid as a capping ligand was presented. The X-Ray Diffraction （XRD） pattern indicated that the power was a single hexagonal phase. Transmission Electron Microscopy （TEM） demonstrated that the av- erage 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 Yb3+-Er3+ codoped nanocrystal colloidal solution exhibited a bright green upconversion fluorescence under 980 nm excitation from a diode laser. The nanocrys- tals were potentially applicable in biolabeling and bioimaging.
王 艳，秦伟平，张继森，曹春燕，张继双，金叶
摘 要：A synthesis of LaF3:0.04Yb3+,0.01Er3+ nanocrystals with oleic acid as a capping ligand was presented. The X-Ray Diffraction （XRD） pattern indicated that the power was a single hexagonal phase. Transmission Electron Microscopy （TEM） demonstrated that the av- erage 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 Yb3+-Er3+ codoped nanocrystal colloidal solution exhibited a bright green upconversion fluorescence under 980 nm excitation from a diode laser. The nanocrys- tals were potentially applicable in biolabeling and bioimaging.
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