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Excitons in Indium Halide Thin Films
Author(s) -
Brothers A. D.,
Feuerborn F. J.,
Bauer S. E.
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.2221580211
Subject(s) - exciton , indium , halide , thin film , absorption (acoustics) , spectral line , hydrostatic pressure , analytical chemistry (journal) , absorption spectroscopy , hydrostatic equilibrium , atomic physics , materials science , chemistry , optics , condensed matter physics , physics , optoelectronics , inorganic chemistry , nanotechnology , thermodynamics , chromatography , composite material , astronomy , quantum mechanics
Optical absorption spectra for thin films of InBr, InCl, and Inl are studied as a function of temperature from 90 to 300 K and as a function of hydrostatic pressures up to 0.35 GPa. Temperature shifts of the exciton peaks in InBr, InCl, and InI are −1.87, −0.5, and −1.1 in units of 10 −4 eV/K, respectively. Pressure shifts of these peaks are reported as −2.5, −0.9, and −3.0 in units of 10 −10 eV/Pa, respectively. A discussion of the implications of these results on the band structure of these materials is presented.