Electronic structure and self-assembly of cross-linked semiconductor nanocrystal arrays

Dov Steiner*, Doron Azulay, Assaf Aharoni, Assaf Salant, Uri Banin, Oded Millo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


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.

Original languageAmerican English
Article number065201
Issue number6
StatePublished - 13 Feb 2008


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