Abstract

We report the luminescence properties and decay profiles of Ce:YAlO₃, Mn:YAlO₃; and Ce,Mn:YAlO₃ crystals grown by Czochralski method. The spectroscopic properties show that both Mn²⁺ ions and Mn⁴⁺ ions exist in Mn:YAlO₃ and Ce,Mn:YAlO₃ crystals. The Mn²⁺ ions have a broad emission band of 60 nm in Mn-doped YAlO₃ crystal at 530 nm. The luminescence spectra also indicate that there is significant energy transfer between Ce³⁺ and Mn⁴⁺ in Ce,Mn:YAlO₃ crystal. Because of the energy transfer, the first decay component in Ce,Mn:YAlO₃ decreases from 24.5 to 10.8 ns, which is much faster than that of Ce:YAlO₃.

© 2010 Chinese Optics Letters

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