title: Electronic structure and self-assembly of cross-linked semiconductor nanocrystal arrays.
abstract: We studied the electronic level structure of assemblies of InAs quantum dots and CdSe nanorods cross-linked by 1,4-phenylenediamine molecules using scanning tunneling spectroscopy. We found that the bandgap in these arrays is reduced with respect to the corresponding ligand-capped nanocrystal arrays. In addition, a pronounced sub-gap spectral structure commonly appeared which can be attributed to unpassivated nanocrystal surface states or associated with linker-molecule-related levels. The exchange of the ligands by the linker molecules also affected the structural array properties. Most significantly, clusters of close-packed standing CdSe nanorods were formed.
authors: Racah Institute of Physics, and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
authors: Dov
authors: D
authors: Steiner
authors: Doron
authors: D
authors: Azulay
authors: Assaf
authors: A
authors: Aharoni
authors: Assaf
authors: A
authors: Salant
authors: Uri
authors: U
authors: Banin
authors: Oded
authors: O
authors: Millo