Abstract
Energy transfer from Eu2+ to Tb3+ was observed by investigating the optical properties from photoluminescence spectra and decay time curves in Tb3+ singly doped and Eu2+–Tb3+ co-doped calcium chlorapatite, Ca5(PO4)3Cl (CPCl). It is dominated by the cooperation of a phonon-assisted energy transfer process and a non-radiative resonant energy transfer process caused by the exchange interaction. Eu2+–Tb3+ co-doped calcium chlorapatite phosphors in which Tb3+ can be efficiently excited by 400 nm are potential candidates for phosphor-converted LED.
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74.25.Gz; 78.40.Fy; 76.30.Kg
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Zhang, Z., Wang, J., Zhang, M. et al. The energy transfer from Eu2+ to Tb3+ in calcium chlorapatite phosphor and its potential application in LEDs. Appl. Phys. B 91, 529–537 (2008). https://doi.org/10.1007/s00340-008-3035-1
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DOI: https://doi.org/10.1007/s00340-008-3035-1