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Luminescence and defects creation in Ce 3+ ‐doped Lu 3 Al 5 O 12 crystals
Author(s) -
Blazek K.,
Krasnikov A.,
Nejezchleb K.,
Nikl M.,
Savikhina T.,
Zazubovich S.
Publication year - 2004
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.200301986
Subject(s) - luminescence , doping , impurity , energy transfer , excitation , ion , analytical chemistry (journal) , materials science , lattice (music) , crystallography , chemistry , chemical physics , optoelectronics , physics , organic chemistry , chromatography , quantum mechanics , acoustics
Luminescence, energy transfer and defects creation processes were studied at 4.2–300 K for Ce 3+ ‐doped Lu 3 Al 5 O 12 crystals under excitation in the 2.5–11.5 eV energy range. The results obtained were compared with the characteristics of Y 3 Al 5 O 12 :Ce crystals. It was concluded that in both systems the efficiency of energy transfer from the host lattice to the impurity ion can be noticeably increased by the decrease of concentration of the defects responsible for their intrinsic luminescence. The origin of the optically created defects and possible mechanisms of their formation are discussed. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)