Uniform AMoO{sub 4}:Ln (A=Sr{sup 2+}, Ba{sup 2+}; Ln=Eu{sup 3+}, Tb{sup 3+}) submicron particles: Solvothermal synthesis and luminescent properties

Journal Article · Tue Sep 15 04:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.07.009· OSTI ID:21370584

Piaoping, Yang ^[1]; Chunxia, Li ^[2]; Wenxin, Wang ^[1]; Zewei, Quan ^[2]; Shili, Gai ^[1]

---

1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001 (China)
2. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (China)

Rare-earth ions (Eu{sup 3+}, Tb{sup 3+}) doped AMoO{sub 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{sub 4} phase. It has been shown that the as-synthesized SrMoO{sub 4}:Ln and BaMoO{sub 4}:Ln samples show respective uniform peanut-like and oval morphologies with narrow size distribution. The possible growth process of the AMoO{sub 4}:Ln has been investigated in detail. The EG/H{sub 2}O volume ratio, reaction temperature and time have obvious effect on the morphologies and sizes of the as-synthesized products. Upon excitation by ultraviolet radiation, the AMoO{sub 4}:Eu{sup 3+} phosphors show the characteristic {sup 5}D{sub 0}-{sup 7}F{sub 1-4} emission lines of Eu{sup 3+}, while the AMoO{sub 4}:Tb{sup 3+} phosphors exhibit the characteristic {sup 5}D{sub 4}-{sup 7}F{sub 3-6} emission lines of Tb{sup 3+}. These phosphors exhibit potential applications in the fields of fluorescent lamps and light emitting diodes (LEDs). - Graphical abstract: Uniform rare-earth ions (Eu{sup 3+}, Tb{sup 3+}) doped AMoO{sub 4} (A=Sr, Ba) submicron phosphors with tetragonal scheelite-type structure have been prepared through a facile solvothermal process using EG as reaction media. Display Omitted

• OSTI ID: 21370584
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 9 Vol. 182; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM IONS
CHARGED PARTICLES
COHERENT SCATTERING
DIFFRACTION
DOPED MATERIALS
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
EMISSION
EUROPIUM IONS
INFRARED SPECTRA
IONS
LUMINESCENCE
MATERIALS
MICROSCOPY
MOLYBDATES
MOLYBDENUM COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHORS
PHOTOELECTRON SPECTROSCOPY
PHOTOLUMINESCENCE
PHOTON EMISSION
REFRACTORY METAL COMPOUNDS
SCANNING ELECTRON MICROSCOPY
SCATTERING
SPECTRA
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM IONS
SYNTHESIS
TERBIUM IONS
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY