Electronic excitations and luminescence of SrAlF5 crystals doped with Ce3+ ions / Omelkov S.,Pustovarov V.,Kirm M.,Ogorodnikov I.,Isaenko L. // RADIATION MEASUREMENTS. - 2010. - V. 45, l. 3-6, SI. - P. 292-294.

ISSN/EISSN:

1350-4487 / нет данных

Type:

Article; Proceedings Paper

Abstract:

This paper reports the results of a time-resolved photoluminescence and energy transfer processes study in Ce3+ doped SrAlF5 single crystals. Several Ce3+ centers emitting near 4 eV due to 5d-4f transitions of Ce3+ ions substituting for Sr2+ in non-equivalent lattice sites were identified. The lifetime of these transitions is in the range of 25-35 ns under intra-center excitation in the energy region of 4-7 eV at T = 10 K. An effective energy transfer from lattice defects to dopant ions was revealed in the -7-11 eV energy range. Both direct and indirect excitation channels are efficient at room temperature. Excitons bound to dopants are revealed at T = 10 K under excitation in the fundamental absorption region above 11 eV, as well as radiative decay of self-trapped excitons resulting in luminescence near 3 eV. (C) 2009 Elsevier Ltd. All rights reserved.

Author keywords:

SrAlF5; Time-resolved luminescence spectroscopy; Ce3+ ions, energy transfer FLUORIDES

DOI:

10.1016/j.radmeas.2009.10.105

Web of Science ID:

ISI:000279183200012

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	MAR-JUL
Note	7th European Conference on Luminescent Detectors and Transformers of Ionizing Radiation, Cracow, POLAND, JUL 12-17, 2009
Organization	Polish Acad Sci, Inst Nucl Phys
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Keywords-Plus	FLUORIDES
Research-Areas	Nuclear Science \& Technology
Web-of-Science-Categories	Nuclear Science \& Technology
Author-Email	Omelkovs@gmail.com
ResearcherID-Numbers	Isaenko, Ludmila/A-5272-2014 Ogorodnikov, Igor/B-4162-2011 Isaenko, Ludmila/H-7620-2013 Kirm, Marco/M-1533-2016
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340 Kirm, Marco/0000-0002-1833-6894
Number-of-Cited-References	10
Usage-Count-Since-2013	5
Journal-ISO	Radiat. Meas.
Doc-Delivery-Number	616BQ