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The Influence of Complex Luminescence Centres on the Luminescent Properties of CaS: Eu
Author(s) -
Gruzintsev A. N.,
Demishev S. V.,
Nikiforova T. V.
Publication year - 1990
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.2221610225
Subject(s) - cathodoluminescence , luminescence , phosphor , photoluminescence , linear combination of atomic orbitals , atomic orbital , activator (genetics) , excitation , photoluminescence excitation , atomic physics , materials science , spectral line , electron , chemistry , optoelectronics , physics , quantum mechanics , gene , biochemistry
Photoluminescence, cathodoluminescence, and excitation spectra of CaS: Eu phosphors with different activator concentrations (0.1 to 2 at%) are measured at 4.2, 80, and 300 K. Excitation and luminescence bands originating from the associate centres Eu Ca 2+ ‐V Ca are observed in addition to those of a single Eu Ca 2+centre. Calculations by the method of linear combination of atomic orbitals (LCAO) allow to obtain a scheme of the electron terms of the associates which is in good agreement with the experiment.