The value of the direct bandgap of InN: a re-examination Auteur(s): Briot O., Maleyre Benedicte, Ruffenach S., Gil B., Pinquier C., Demangeot F., Frandon J.
Conference: 3rd International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN3) (Acireale (ITALY), IT, 2003-10-01) Ref HAL: hal-00540437_v1 Exporter : BibTex | endNote Résumé: We report the observation of a broad absorption in the 1.25 eV region that is typical of thin InN films. Such a feature we attribute to light absorption at the energy of the fundamental direct band gap of InN, while we attribute the low energy 650-750 meV photoluminescence to an extrinsic recombination process analogous to the process that give the blue band in AlN and the yellow band in GaN. The substantial broadening is attributed to both the residual doping, and strain. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |