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Yellow‐Emitting Sr 9 Sc(PO 4 ) 7 :Eu 2+ , Mn 2+ Phosphor with Energy Transfer for Potential Application in White Light‐Emitting Diodes
Author(s) -
Dong Xiaoling,
Zhang Jiahua,
Zhang Liangliang,
Zhang Xia,
Hao Zhendong,
Luo Yongshi
Publication year - 2014
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201301216
Subject(s) - phosphor , chemistry , luminescence , light emitting diode , excitation , analytical chemistry (journal) , photoluminescence , solid state lighting , energy transfer , excited state , optoelectronics , atomic physics , materials science , physics , molecular physics , chromatography , quantum mechanics
Eu 2+ –Mn 2+ codoped yellow‐emitting Sr 9 Sc(PO 4 ) 7 (SSP) phosphors have been synthesized by solid‐state reactions. The synthesis, structure refinement, and luminescence properties of the obtained phosphor were investigated in detail. The obtained phosphor exhibits a strong excitation band between 250 and 450 nm, matching well with the dominant emission band of a near‐UV light‐emitting‐diode (LED) chip. Upon excitation at 365 nm, the Sr 9 Sc(PO 4 ) 7 :Eu 2+ , Mn 2+ phosphor shows strong yellow emissions centered at 510 and 610 nm. The energy transfer mechanism from Eu 2+ to Mn 2+ in Sr 9 Sc(PO 4 ) 7 :Eu 2+ , Mn 2+ has been studied and demonstrated to be a resonant type through a dipole‐quadrupole mechanism based on the decay lifetime data. These results indicate that yellow‐emitting Sr 9 Sc(PO 4 ) 7 :Eu 2+ , Mn 2+ can serve as a promising candidate for application in white‐light LEDs.