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Abstract A series of Ce3+/Tb3+/Eu3+ singly doped, codoped and tri-doped Ca2MgSi2O7 phosphors were prepared by a solid state reaction. The XRD patterns suggest that the rare earth ions have doped… Click to show full abstract
Abstract A series of Ce3+/Tb3+/Eu3+ singly doped, codoped and tri-doped Ca2MgSi2O7 phosphors were prepared by a solid state reaction. The XRD patterns suggest that the rare earth ions have doped into Ca2MgSi2O7 hosts entirely and formed phosphors with a single phase. To investigate the energy transfer of Ce3+ → Tb3+ → Eu3+, the excitation and emission spectra of the prepared Ce3+/Tb3+/Eu3+ singly doped, codoped and tri-doped Ca2MgSi2O7 phosphors were measured. The excitation and emission spectra of Ce3+/Tb3+/Eu3+ singly doped Ca2MgSi2O7 phosphors show that the Ce3+ emission band overlaps with the excitation bands of Tb3+ and Eu3+, and the emission bands of Tb3+ overlap with the excitation bands of Eu3+. The emission spectra of Ce3+/Eu3+, Ce3+/Tb3+ and Tb3+/Eu3+ codoped phosphors demonstrate that the Ce3+ → Eu3+ energy transfer is forbade but the Ce3+ → Tb3+ and Tb3+ → Eu3+ energy transfers occur. The emission spectra of Ce3+/Tb3+/Eu3+ tri-doped Ca2MgSi2O7 phosphors demonstrate the energy transfer from Ce3+ to Eu3+ could be obtained through the Tb3+ chain.