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

A series of Ce ,Mn -coactivated Ca YNa(PO ) 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 /Mn -doped samples matched well with the standard data. A...

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Bibliographic Details
Published in:Luminescence (Chichester, England) England), 2017-06, Vol.32 (4), p.529-534
Main Authors: Guan, Anxiang, Yao, Chunying, Wang, Guofang, Fu, Anjie, Zhou, Liya, Meng, Yingbin, Wang, Qiuping
Format: Article
Language:English
Subjects:
Calcium Compounds - chemistry
Cerium - chemistry
Energy Transfer
Luminescent Agents - chemical synthesis
Luminescent Agents - chemistry
Manganese - chemistry
Molecular Structure
Ultraviolet Rays
X-Ray Diffraction
Yttrium - chemistry
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Summary:A series of Ce ,Mn -coactivated Ca YNa(PO ) 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 /Mn -doped samples matched well with the standard data. A spectral overlap between the emission band of Ce and the excitation band of Mn suggested the occurrence of energy transfer from Ce to Mn . With increasing Mn content, the emission intensities and lifetime values of the Ce emission for Ca YNa(PO ) F:Ce ,Mn phosphors linearly decrease, whereas the energy transfer efficiencies gradually increase to 89.35%. By adjusting the relative concentrations of Ce and Mn , the emission hues are tuned from blue to white and eventually to yellow. These results suggest that Ca YNa(PO ) F:Ce ,Mn phosphors have promising application as white-emitting phosphors for near-ultraviolet light-emitting diodes.
ISSN:1522-7235
1522-7243
DOI:10.1002/bio.3208