Abstract

The site-selective excitation and emission spectroscopy and luminescence decay (lifetime) have been investigated in the D05F07 region using a pulsed, tunable, and narrowband dye laser. We observed two crystallographic sites for Eu3+ in La2(MoO4)3 and one crystallographic site for Eu3+ in Gd2(MoO4)3. The stark energy levels for Eu3+ at different sites were assigned from site-selective emission spectra. The luminescent properties of the as- synthesized samples were also investigated, which showed strong lines at 395nm in excitation spectra and intensive red emission, indicating that they could be used as red components for white LEDs.

© 2011 Optical Society of America

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