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Enhancement of the luminescence properties of Sr 3 (PO 4 ) 2 :Dy 3+ ,Li + white‐light‐emitting phosphors by charge compensator Li + co‐doping
Author(s) -
Li Yuhang,
Dai Siyi,
Zhang Wentao,
Zhang Peicong,
Qiu Kehui
Publication year - 2017
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3387
Subject(s) - phosphor , luminescence , analytical chemistry (journal) , excited state , ion , materials science , ultraviolet , light emitting diode , ultraviolet light , diode , optoelectronics , chemistry , atomic physics , physics , organic chemistry , chromatography
Sr 3 (PO 4 ) 2 :Dy 3+ ,Li + phosphors were prepared using a simple high temperature solid method for luminescence enhancement. The structures of the as‐prepared samples agreed well with the standard phase of Sr 3 (PO 4 ) 2 , even when Dy 3+ and Li + were introduced. Under ultraviolet excitation at 350 nm, the Sr 3 (PO 4 ) 2 :Dy 3+ sample exhibited two emission peaks at 483 nm and 580 nm, which were due to the 4 F 9/2 → 6 H 15/2 and 4 F 9/2 → 6 H 13/2 transitions of Dy 3+ ions, respectively. A white light was fabricated using these two emissions from the Sr 3 (PO 4 ) 2 :Dy 3+ phosphors. The luminescence properties of Sr 3 (PO 4 ) 2 :Dy 3+ ,Li + phosphors, including emission intensity and decay time, were improved remarkably with the addition of Li + as the charge compensator, which would promote their application in near‐ultraviolet excited white‐light‐emitting diodes.