Size dependent tunneling and optical spectroscopy of CdSe quantum rods
arXiv:cond-mat/0207389 · doi:10.1103/PhysRevLett.89.086801
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 rod diameter and not on length. With increasing diameter, the band-gap and the excited state level spacings shift to the red. The level structure was assigned using a multi-band effective-mass model, showing a similar dependence on rod dimensions.
Accepted to PRL (nearly final version). 4 pages in revtex, 4 figures
References in corpus (2)
Cited by in corpus (12)
- 1D Exciton Spectroscopy of Semiconductor Nanorods
- Spin-3/2 physics of semiconductor hole nanowires: Valence-band mixing and tunable interplay between bulk-material and orbital bound-state spin splittings
- Electronic coupling in colloidal quantum dot molecules; The case of CdSe/CdS core/shell homodimers
- Transport in a Single Self-Doped Nanocrystal
- Electronic structure of wurtzite quantum dots with cylindrical symmetry
- Spin-orbit induced hole spin relaxation in InAs and GaAs quantum dots
- Biexciton generation rates in CdSe nanorods are length independent
- Electron-phonon interaction in quantum-dot/quantum-well semiconductor heterostructures
- Dielectric confinement of excitons in type-I and type-II semiconductor nanorods
- Design and implementation of a device based on an off-axis parabolic mirror to perform luminescence experiments in a scanning tunneling microscope
- Semiconductor quantum tubes: dielectric modulation and excitonic response
- Evaluating the transition dipole moment of quantum dots with absorption and angle resolved photo-luminescence spectroscopy