Synthesis, growth, and Er3+ luminescence of lanthanide phosphate nanoparticles

被引:111
作者
Lehmann, O [1 ]
Meyssamy, H [1 ]
Kömpe, K [1 ]
Schnablegger, H [1 ]
Haase, M [1 ]
机构
[1] Univ Hamburg, Inst Chem Phys, D-20146 Hamburg, Germany
关键词
D O I
10.1021/jp030012h
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The complete series of all nonradioactive lanthanide phosphates has been prepared in organic solution as ligand-capped nanoparticles. In all cases, well-dispersed particles with mean sizes below 10 nm are obtained. Despite the similar chemical properties of the lanthanides, the growth, the crystal structure, and the mean size of the nanocrystals are found to be strongly affected by the lanthanide ion employed. Very small nanoparticles are obtained for lanthanides for which the lattice energies of the bulk tetragonal xenotime phase and the bulk monoclinic monazite phase are similar. These smaller nanoparticles do not show the expected. phase transition from monoclinic to tetragonal and seem to have their own unique crystal structure. Possible explanations for these observations are discussed. Finally, we present the first results on the IR emission of Er3+-doped YbPO4 and (Lu, Yb)PO4 nanoparticles in solution.
引用
收藏
页码:7449 / 7453
页数:5
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