Luminescence properties of Eu 3+ ‐doped MgAl 2 O 4  nanopowders synthesized by micro‐emulsion method | Zendy

Guan Weimin | Zendy; Li Jinhong | Zendy; Wang Xiang | Zendy

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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.

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