Abstract

We report the luminescence properties and decay profiles of Ce:YAlO<sub>3</sub>, Mn:YAlO<sub>3</sub>; and Ce,Mn:YAlO<sub>3</sub> crystals grown by Czochralski method. The spectroscopic properties show that both Mn<sup>2+</sup> ions and Mn<sup>4+</sup> ions exist in Mn:YAlO<sub>3</sub> and Ce,Mn:YAlO<sub>3</sub> crystals. The Mn<sup>2+</sup> ions have a broad emission band of 60 nm in Mn-doped YAlO<sub>3</sub> crystal at 530 nm. The luminescence spectra also indicate that there is significant energy transfer between Ce<sup>3+</sup> and Mn<sup>4+</sup> in Ce,Mn:YAlO<sub>3</sub> crystal. Because of the energy transfer, the first decay component in Ce,Mn:YAlO<sub>3</sub> decreases from 24.5 to 10.8 ns, which is much faster than that of Ce:YAlO<sub>3</sub>.

© 2010 Chinese Optics Letters

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