title: Dual emission of Ce3+,Mn2+-coactivated Ca3YNa(PO4)3F via energy transfer: a single component white/yellow-emitting phosphor.
abstract: A series of Ce3+,Mn2+-coactivated Ca3YNa(PO4)3F 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 Ce3+/Mn2+-doped samples matched well with the standard data. A spectral overlap between the emission band of Ce3+and the excitation band of Mn2+suggested the occurrence of energy transfer from Ce3+to Mn2+. With increasing Mn2+content, the emission intensities and lifetime values of the Ce3+emission for Ca3YNa(PO4)3F:Ce3+,Mn2+phosphors linearly decrease, whereas the energy transfer efficiencies gradually increase to 89.35%. By adjusting the relative concentrations of Ce3+and Mn2+, the emission hues are tuned from blue to white and eventually to yellow. These results suggest that Ca3YNa(PO4)3F:Ce3+,Mn2+phosphors have promising application as white-emitting phosphors for near-ultraviolet light-emitting diodes.
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning, People's Republic of China.
authors.forename: Anxiang
authors.initials: A
authors.lastname: Guan
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning, People's Republic of China.
authors.forename: Chunying
authors.initials: C
authors.lastname: Yao
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning, People's Republic of China.
authors.forename: Guofang
authors.initials: G
authors.lastname: Wang
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning, People's Republic of China.
authors.forename: Anjie
authors.initials: A
authors.lastname: Fu
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning, People's Republic of China.
authors.forename: Liya
authors.initials: L
authors.lastname: Zhou
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning, People's Republic of China.
authors.forename: Yingbin
authors.initials: Y
authors.lastname: Meng
authors.forename: Qiuping
authors.initials: Q
authors.lastname: Wang
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry; D002563:Cerium / Q000737:chemistry; D004735:Energy Transfer; D049408:Luminescent Agents / Q000138:chemical synthesis / Q000737:chemistry*; D008345:Manganese / Q000737:chemistry; D015394:Molecular Structure; D014466:Ultraviolet Rays; D014961:X-Ray Diffraction; D015019:Yttrium / Q000737:chemistry
chemical_list: D017610:Calcium Compounds; D049408:Luminescent Agents; D002563:Cerium; D008345:Manganese; D015019:Yttrium
keywords: energy transfer; luminescence; optical properties; phosphors