Optical properties and microstructure of 2.02-3.30 eV ZnCdO nanowires: Effect of thermal annealing Auteur(s): Lopez-Ponce Manuel, Hierro A., Ulloa J.-M., Lefebvre P., Munoz E., Agouram S., Muñoz-Sanjosé V., Yamamoto K., Nakamura A., Temmyo J. (Article) Publié: Applied Physics Letters, vol. 102 p.143103 (2013) Texte intégral en Openaccess : Ref HAL: hal-00809307_v1 DOI: 10.1063/1.4799491 WoS: 000318268800071 Exporter : BibTex | endNote 15 Citations Résumé: ZnCdO nanowires with up to 45% Cd are demonstrated showing room temperature photoluminescence (PL) down to 2.02 eV and a radiative efficiency similar to that of ZnO nanowires. Analysis of the microstructure in individual nanowires confirms the presence of a single wurtzite phase even at the highest Cd contents, with a homogeneous distribution of Cd both in the longitudinal and transverse directions. Thermal annealing at 550 C yields an overall improvement of the PL, which is blue-shifted as a result of the homogeneous decrease of Cd throughout the nanowire, but the single wurtzite structure is fully maintained. |