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Title: Temperature dependence of the dielectric function in the spectral range (0.5–8.5) eV of an In{sub 2}O{sub 3} thin film

We present the dielectric function of a bcc-In{sub 2}O{sub 3} thin film in the wide spectral range from near-infrared to vacuum-ultraviolet and for temperatures 10 K–300 K, determined by spectroscopic ellipsometry. From the temperature dependence of electronic transition energies, we derive electron-phonon coupling properties and found hints that the direct parabolic band-band transitions involve In-d states. Further we discuss possible excitonic contributions to the dielectric function.
Authors:
; ; ; ;  [1]
  1. Institut für Experimentelle Physik II, Universität Leipzig, Linnéstr. 5, 04103 Leipzig (Germany)
Publication Date:
OSTI Identifier:
22303506
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BCC LATTICES; DIELECTRIC MATERIALS; DIELECTRIC PROPERTIES; ELECTRON-PHONON COUPLING; ELLIPSOMETRY; EV RANGE; INDIUM OXIDES; TEMPERATURE DEPENDENCE; THIN FILMS; ULTRAVIOLET RADIATION