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Dual emission of Ce 3 + ,Mn 2 + ‐coactivated Ca 3 YNa(PO 4 ) 3 F via energy transfer: a single component white/yellow‐emitting phosphor
Author(s) -
Guan Anxiang,
Yao Chunying,
Wang Guofang,
Fu Anjie,
Zhou Liya,
Meng Yingbin,
Wang Qiuping
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.3208
Subject(s) - phosphor , analytical chemistry (journal) , emission spectrum , luminescence , materials science , chemistry , spectral line , physics , optoelectronics , chromatography , astronomy
A series of Ce 3 + ,Mn 2 + ‐coactivated Ca 3 YNa(PO 4 ) 3 F phosphors were synthesized via a traditional solid‐state reaction under a reductive atmosphere. X‐Ray powder diffraction was used to confirm that the crystal structure and diffraction peaks of Ce 3 + /Mn 2 + ‐doped samples matched well with the standard data. A spectral overlap between the emission band of Ce 3 + and the excitation band of Mn 2 + suggested the occurrence of energy transfer from Ce 3 + to Mn 2 + . With increasing Mn 2 + content, the emission intensities and lifetime values of the Ce 3 + emission for Ca 3 YNa(PO 4 ) 3 F:Ce 3 + ,Mn 2 + phosphors linearly decrease, whereas the energy transfer efficiencies gradually increase to 89.35%. By adjusting the relative concentrations of Ce 3 + and Mn 2 + , the emission hues are tuned from blue to white and eventually to yellow. These results suggest that Ca 3 YNa(PO 4 ) 3 F:Ce 3 + ,Mn 2 + phosphors have promising application as white‐emitting phosphors for near‐ultraviolet light‐emitting diodes.