Photodynamic Processes in Fluoride Crystals Doped with Ce3+

V.V. Pavlov; V.V. Semashko; R.M. Rakhmatullin; S.L. Korableva

doi:10.1051/epjconf/201510309005

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 103, 09005 (2015)
https://doi.org/10.1051/epjconf/201510309005

Photodynamic Processes in Fluoride Crystals Doped with Ce³⁺

V.V. Pavlov^a, V.V. Semashko, R.M. Rakhmatullin and S.L. Korableva

Kazan Federal University 18 Kremlyovskaya Str. Kazan 420008, Russia

^a Corresponding author: Vitaly.V.Pavlov@gmail.com

Published online: 25 September 2015

Abstract

Integrated studies of photoelectric phenomena and their associated photodynamic processes in LiCaAlF₆, LiLuF₄, LiYF₄, LiY₀,₅Lu₀,₅F₄, SrAlF₅ crystals doped with Ce³⁺ ions have been carried out using the combination of the methods of optical and dielectric spectroscopy. The numerical values of the basic parameters of photodynamic processes and their spectral dependence in 240 – 310 nm spectral range are evaluated. It has been shown that the most probable process, which leads to the photoionization of Ce³⁺ ions in LiY_xLu_1-xF₄:Ce³⁺ (x=0; 0,5; 1) and LiCaAlF₆:Ce³⁺ crystals, is excited-state absorption to the states of mixed configurations of Ce³⁺ ions localized near/in the conduction band of crystal.

Key words: photoionization of impurity ions / optical spectroscopy / dielectric spectroscopy

© Owned by the authors, published by EDP Sciences, 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.