title: Nanoscale near-field imaging of excitons in single heterostructured nanorods.
abstract: The mixed 0D-1D dimensionality of heterostructured semiconductor nanorods, resulting from the dot-in-rod architecture, raises intriguing questions concerning the location and confinement of the exciton and the origin of the fluorescence in such structures. Using apertureless near-field distance-dependent lifetime imaging together with AFM topography, we directly map the emission and determine its location with high precision along different types of nanorods. We find that the fluorescence is emanating from a sub-20 nm region, correlated to the seed location, clearly indicating exciton localization.
authors.affiliation: Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
authors.forename: Eyal
authors.initials: E
authors.lastname: Yoskovitz
authors.forename: Gabi
authors.initials: G
authors.lastname: Menagen
authors.forename: Amit
authors.initials: A
authors.lastname: Sitt
authors.forename: Ella
authors.initials: E
authors.lastname: Lachman
authors.forename: Uri
authors.initials: U
authors.lastname: Banin