Size-Dependent Tunneling and Optical Spectroscopy of CdSe Quantum Rods

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

doi:10.1103/PhysRevLett.89.086801

Size-Dependent Tunneling and Optical Spectroscopy of CdSe Quantum Rods

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

225 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 language	English
Journal	Physical Review Letters
Volume	89
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.89.086801
State	Published - 2002

Bibliographical note

Funding Information:
This work was supported in part by the U.S.-Israel Binational Foundation, by the DIP Foundation, and by the Israel Science Foundation, Grants No. 99/00-12.5 and No. 8001/00-1.

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10.1103/PhysRevLett.89.086801

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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.",

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AU - Rothenberg, Eli

AU - Mokari, Taleb

AU - Banin, Uri

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N2 - 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.

AB - 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.

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Size-Dependent Tunneling and Optical Spectroscopy of CdSe Quantum Rods

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