Charging and quantum size effects in tunnelling and optical spectroscopy of CdSe nanorods

Oded Millo*, David Katz, Dov Steiner, Eli Rothenberg, Taleb Mokari, Miri Kazes, Uri Banin

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

26 Scopus citations

Abstract

We summarize our correlated scanning tunnelling microscopy and optical spectroscopy investigations of the electronic level structure and single-electron charging effects in CdSe quantum rods. Both optical and tunnelling spectra show that the level structure depends primarily on rod diameter and not on length. With increasing diameter, the bandgap and the excited state level spacings shift to the red. The level structure is assigned using a multi-band effective-mass model. The tunnelling spectra also exhibit, depending on the tunnel-junction parameters, single-electron charging effects that yield information on the degeneracy of the electronic states.

Original languageAmerican English
Pages (from-to)R1-R6
JournalNanotechnology
Volume15
Issue number1
DOIs
StatePublished - Jan 2004

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