title: Correlation of microphotoluminescence spectroscopy, scanning transmission electron microscopy, and atom probe tomography on a single nano-object containing an InGaN/GaN multiquantum well system.
abstract: A single nanoscale object containing a set of InGaN/GaN nonpolar multiple-quantum wells has been analyzed by microphotoluminescence spectroscopy (μPL), high-resolution scanning transmission electron microscopy (HR-STEM) and atom probe tomography (APT). The correlated measurements constitute a rich and coherent set of data supporting the interpretation that the observed μPL narrow emission lines, polarized perpendicularly to the crystal c-axis and with energies in the interval 2.9-3.3 eV, are related to exciton states localized in potential minima induced by the irregular 3D In distribution within the quantum well (QW) planes. This novel method opens up interesting perspectives, as it will be possible to apply it on a wide class of quantum confining emitters and nano-objects.
authors.affiliation: Groupe de Physique des Matériaux, UMR CNRS 6634, Normandie University, University of Rouen and INSA Rouen , 76801 St. Etienne du Rouvray, France.
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Rigutti
authors.forename: Ivan
authors.initials: I
authors.lastname: Blum
authors.forename: Deodatta
authors.initials: D
authors.lastname: Shinde
authors.forename: David
authors.initials: D
authors.lastname: Hernández-Maldonado
authors.forename: Williams
authors.initials: W
authors.lastname: Lefebvre
authors.forename: Jonathan
authors.initials: J
authors.lastname: Houard
authors.forename: François
authors.initials: F
authors.lastname: Vurpillot
authors.forename: Angela
authors.initials: A
authors.lastname: Vella
authors.forename: Maria
authors.initials: M
authors.lastname: Tchernycheva
authors.forename: Christophe
authors.initials: C
authors.lastname: Durand
authors.forename: Joël
authors.initials: J
authors.lastname: Eymery
authors.forename: Bernard
authors.initials: B
authors.lastname: Deconihout
mesh_terms: D005708:Gallium / Q000737:chemistry*; D007204:Indium / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods*; D008422:Materials Testing / Q000379:methods; D018625:Microscopy, Atomic Force / Q000379:methods*; D017348:Microscopy, Electron, Scanning Transmission / Q000379:methods*; D008968:Molecular Conformation; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D011789:Quantum Theory; D013223:Statistics as Topic
chemical_list: D007204:Indium; C473348:gallium nitride; D005708:Gallium; C513701:indium nitride