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Temperature dependence of the dielectric function in the spectral range (0.5–8.5) eV of an In2O3 thin filmSchmidt-Grund, Rüdiger, Hannes, Krauß, Kranert, Christian, Bonholzer, Michael, Grundmann, Marius 30 August 2018 (has links)
We present the dielectric function of a bcc-In2O3 thin film in the wide spectral range from nearinfrared to vacuum-ultraviolet and for temperatures 10 K–300K, 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.
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