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Synthesis and luminescence of Eu 3+ ‐activated molybdates with scheelite‐type structure
Author(s) -
Zhang Xinmin,
Meng Fangui,
Li Huan,
Seo Hyo Jin
Publication year - 2013
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.201329071
Subject(s) - phosphor , scheelite , luminescence , materials science , excited state , quantum efficiency , analytical chemistry (journal) , ion , optoelectronics , chemistry , atomic physics , tungsten , physics , organic chemistry , chromatography , metallurgy
Scheelite‐type Eu 3+ ‐activated molybdates [(Sr 1−2 x Eu x Li x )MoO 4 and Sr 0.40 Eu 0.40 MoO 4 )] were prepared by the high temperature solid state reaction. The phase purity of the phosphors was characterized by XRD. The PL spectra, the fluorescence decay curves and the dependence of luminescence intensity on temperature were investigated in detail. The phosphors can be efficiently excited by near‐UV light to realize an intense red luminescence corresponding to the electric dipole transition of Eu 3+ ions. The external quantum efficiency of (Sr 0.2 Eu 0.4 Li 0.4 )MoO 4 sample under 395‐nm excitation is 0.73. According to the PL spectra, these phosphors could be candidate red‐emitting materials for solid‐state lighting if they are combined with green and blue efficiency phosphors and suitable near‐UV InGaN chip.