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Luminescence properties of Eu 3+ ‐doped MgAl 2 O 4 nanopowders synthesized by micro‐emulsion method
Author(s) -
Guan Weimin,
Li Jinhong,
Wang Xiang
Publication year - 2014
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201431268
Subject(s) - phosphor , crystallite , photoluminescence , analytical chemistry (journal) , luminescence , spinel , materials science , transmission electron microscopy , doping , spectroscopy , scherrer equation , scanning electron microscope , nuclear chemistry , chemistry , nanotechnology , physics , optoelectronics , chromatography , quantum mechanics , metallurgy , composite material
Red‐light emitting MgAl 2 O 4 :Eu 3+ nanophosphors were synthesized by a micro‐emulsion method. The photoluminescence properties of the phosphors with different Eu 3+ ion concentrations (0–5 mol%) were investigated though excitation and emission spectroscopy at room temperature. The phosphors were further characterized by X‐ray diffraction (XRD) and transmission electron microscopy (TEM). The results show that pure MgAl 2 O 4 spinels were synthesized at 1000 °C. The MgAl 2 O 4 spinel crystallite size was observed under TEM about 10 nm at 1000 °C and 30 nm at 1200 °C, which was consistent with the size calculated by the Scherrer equation. The MgAl 2 O 4 :Eu 3+ phosphors show typical red emission at 615 nm, which corresponds to the 5 D 0 → 7 F 2 transition.