%0 Journal Article %T Selective area growth and characterization of InGaN nano-disks implemented in GaN nanocolumns with different top morphologies. %+ Departamento de Ingeniería Electrónica and ISOM (ETSI Telecomunicacion) %+ Laboratoire Charles Coulomb (L2C) %+ Paul-Drude-Institut für Festkörperelektronik (PDI) %A Albert, Steven %A Bengoechea-Encabo, Ana %A Lefebvre, Pierre %A Barbagini, Francesca %A Sanchez-Garcia, M.A. %A Calleja, E. %A Jahn, Uwe %A Trampert, A. %Z Union européenne: - FP7- IP Contrat SMASH 228999-2. - Initial training network RAINBOW project PITN-GA-2008-213238 - Marie Curie Intra European Fellowship, PIEF-GA-2009-253085 Ministère espagnol de la Recherche: projets CAM/P2009/ESP-1503 et MICINN MAT2011- 26703. %< avec comité de lecture %@ 0003-6951 %J Applied Physics Letters %I American Institute of Physics %V 100 %P 231906 %8 2012-06-05 %D 2012 %R 10.1063/1.4728115 %K nanowires %K nanocolonnes %K nanofils %K GaN %K InGaN %K nanocolumns %Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles %X This work reports on the morphology control of the selective area growth of GaN-based nanostructures on c-plane GaN templates. By decreasing the substrate temperature, the nanostructures morphology changes from pyramidal islands (no vertical m-planes), to GaN nanocolumns with top semipolar r-planes, and further to GaN nanocolumns with top polar c-planes. When growing InGaN nano-disks embedded into the GaN nanocolumns, the different morphologies mentioned lead to different optical properties, due to the semi-polar and polar nature of the r-planes and c-planes involved. These differences are assessed by photoluminescence measurements at low temperature and correlated to the specific nano-disk geometry. %G English %2 https://hal.science/hal-00704507/document %2 https://hal.science/hal-00704507/file/INVE_MEM_2012_134099.pdf %L hal-00704507 %U https://hal.science/hal-00704507 %~ CNRS %~ OPENAIRE %~ L2C %~ MIPS %~ UNIV-MONTPELLIER %~ UM-2015-2021