科研之友
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摘要
In this article, the high potential of the fluorolytic sol-gel process to synthesize nanoscopic rare earth-doped calcium fluoride sols is shown. Through a fluorolytic sol-gel process we manage to achieve spherical monodisperse similar to 5 nm sized nanoparticles using a simple and reproducible one-pot-wet chemical route at room temperature. The as-synthesized clear sols exhibit an intense red and green luminescence under UV excitation at room temperature. A spectroscopic study of the sols revealed the characteristic transitions D-5(0) -> F-7(J) of Eu3+ and D-5(4) -> F-7(J) of Tb3+, with D-5(0) -> F-7(2) (611 nm) of Eu3+ and D-5(4) -> F-7(4) (581 nm) of Tb3+ as the most prominent transitions. This facile synthetic strategy is also valuable for developing other luminescent nanoparticles.
- 出版日期2014
