期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 182, 期 9, 页码 2510-2520出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2009.07.009
关键词
Solvothermal synthesis; Luminescence; BaMoO4; SrMoO4
资金
- National Basic Research Program of China [2007CB935502, 2010CB327704]
- National Natural Science Foundation of China (NSFC) [20871035, 50702057, 50872131]
- China Postdoctoral Special Science Foundation [200808281]
Rare-earth ions (Eu3+, Tb3+) doped AMoO(4) (A = Sr, Ba) particles with uniform morphologies were successfully prepared through a facile solvothermal process using ethylene glycol (EG) as protecting agent. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS), Fourier transform infrared spectroscopy (FT-IR), photoluminescence (PL) spectra and the kinetic decays were performed to characterize these samples. The XRD results reveal that all the doped samples are of high purity and crystallinity and assigned to the tetragonal scheelite-type structure of the AMoO(4) phase. It has been shown that the as-synthesized SrMoO4:Ln and BaMoO4:Ln samples show respective uniform pea nut-like and oval morphologies with narrowsize distribution. The possible growth process of the AMoO(4):Ln has been investigated in detail. The EG/H2O volume ratio, reaction temperature and time have obvious effect on themorphologies and sizes of the as-synthesized products. Upon excitation by ultraviolet radiation, the AMoO(4):Eu3+ phosphors show the characteristic D-5(0)-F-7(1-4) emission lines of Eu3+, while the AMoO(4):Tb3+ phosphors exhibit the characteristic D-5(4)-F-7(3-6) emission lines of Tb3+. These phosphors exhibit potential applications in the fields of fluorescent lamps and light emitting diodes (LEDs). (C) 2009 Elsevier Inc. All rights reserved.
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