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Temperature quenching of Ce 3+ impurity ion fluorescence in Y 2 O 2 S: Spatial confinement effect in multiphonon relaxation
Author(s) -
Feofilov S. P.,
Kulinkin A. B.,
Zakharchenya R. I.,
Hölsä J.,
Malkamäki M.
Publication year - 2013
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201200484
Subject(s) - relaxation (psychology) , excited state , ion , quenching (fluorescence) , impurity , atomic physics , fluorescence , spectroscopy , materials science , chemistry , analytical chemistry (journal) , physics , optics , psychology , social psychology , organic chemistry , quantum mechanics , chromatography
The non‐radiative decay of the 5d excited state of Ce 3+ ions in Y 2 O 2 S was studied with fluorescence spectroscopy. It is shown that temperature quenching of Ce 3+ ion fluorescence is due to high‐order multiphonon relaxation. The direct evidence of spatial confinement effect in multiphonon relaxation was obtained: relaxation is more efficient in nanoparticles than in micron‐sized particles.