Selective excitation of up-conversion luminescence by Yb3+-Er3+ energy transfer in glass and crystalline phase of oxyfluoride glass ceramics

[摘要]：

Up-conversion luminescence of oxyfluoride glass and glass ceramics containing LaF3 crystallites doped with Yb3+ and Er3+ was investigated at low temperature. Excitation of Yb3+ in the IR region revealed the fast and the slow components of Er3+ up-conversion luminescence originating from both glass and crystalline phases. The temporal differences of the both kinds of the luminescence allowed reconstructing the excitation spectra of the up-conversion luminescence related to the glass and crystalline phases in the glass ceramics. (C) 2010 Elsevier By. All rights reserved.

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