Abstract
A series of blue-emitting NaCaBeSi2O6F:Eu2+ phosphors were obtained via a solid state reaction. NaCaBeSi2O6F:Eu2+ exhibit a broad absorption from 250 to 450nm when monitored at 467nm and display a broad emission band from 400 to 600nm when excited at 397nm. The concentration quenching was obtained when the concentration of Eu2+ was increased to 0.8mol%. Energy transfer interactions between Eu2+ in host is due to dipole-dipole mechanisms and the critical distance was calculated to be 31.96Å. The results obtained in this study highly indicates that NaCaBeSi2O6F:Eu2+ can be a potential blue-emitting phosphor for light quality improvement in white-LED applications.
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