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On the properties of cobalt impurities in zinc selenide crystals II. The optical properties in near‐infrared. 4 A 2 ( 4 F) ↔ 4 T 2 ( 4 F) Transitions
Author(s) -
Radlinski A. P.
Publication year - 1978
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.2220860104
Subject(s) - zinc selenide , excited state , impurity , luminescence , absorption spectroscopy , zinc , cobalt , atomic physics , absorption (acoustics) , ionization , analytical chemistry (journal) , infrared , materials science , chemistry , physics , inorganic chemistry , ion , optics , optoelectronics , metallurgy , composite material , chromatography , organic chemistry
Absorption and luminescence spectra due to the 4 A 2 ( 4 F) ↔ 4 T 2 ( 4 F) crystal field transitions in ZnSe:Co 2+ are presented. It is shown that the structure of the absorption band is caused by the spin‐orbit interaction within the 4 T 2 ( 4 F) state and the coupling to the lattice modes of A 1 symmetry. According to a model proposed for the thermal depopulation of the excited 4 T 2 ( 4 F) state, the ionization energy of the Co 2+ impurity in ZnSe is estimated to be about 5600 cm −1 (0.69 eV).