Size-Dependent Tunneling and Optical Spectroscopy of CdSe Quantum Rods

David Katz, Tommer Wizansky, Oded Millo, Eli Rothenberg, Taleb Mokari, Uri Banin

Research output: Contribution to journalArticlepeer-review

203 Scopus citations

Abstract

Photoluminescence excitation spectroscopy and scanning-tunneling spectroscopy are used to study the electronic states in CdSe quantum rods that manifest a transition from a zero-dimensional to a one-dimensional quantum-confined structure. Both optical and tunneling spectra show that the level structure depends primarily on the diameter of the rod and not its length. With increasing diameter, the band gap and the excited state level spacings shift to the red. The level structure was assigned using a multiband effective-mass model, showing a similar dependence on rod dimensions.

Original languageEnglish
JournalPhysical Review Letters
Volume89
Issue number8
DOIs
StatePublished - 1 Jan 2002
Externally publishedYes

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