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Optical absorption study of iron trifluoride thin films
Author(s) -
Lachter A.,
Salardenne J.,
Barrière A. S.
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.2220900115
Subject(s) - delocalized electron , absorption (acoustics) , absorption edge , thin film , band gap , trifluoride , materials science , conduction band , condensed matter physics , atomic physics , chemistry , optoelectronics , inorganic chemistry , electron , physics , nanotechnology , composite material , organic chemistry , quantum mechanics
The optical absorption of crystallized thin films of iron trifluoride is investigated. The energy gap in FeF 3 thin films is about 5.96 eV. The six peaks characterizing the different spin transitions between the 3d states of iron and two excitonic peaks are obtained. Furthermore, an optical absorption edge corresponding to an energy of 1.1 eV is observed. It can be interpreted by electronic transitions from localized states in the forbidden band due to a lack of fluorine to the delocalized states of the conduction band.