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Dimensional transition of CdxZn1-xTe nanostructures grown on ZnTe layers
- Authors
- Lee, H. S.; Park, H. L.; Kim, T. W.
- Issue Date
- Apr-2007
- Publisher
- AMER INST PHYSICS
- Citation
- APPLIED PHYSICS LETTERS, v.90, no.18, pp.1 - 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 90
- Number
- 18
- Start Page
- 1
- End Page
- 4
- ISSN
- 0003-6951
- Abstract
- The atomic force microscopy images showed that the dimensional structural transformation from CdxZn1-xTe quantum dots (QDs) with Cd mole fractions of 0.5 and 0.6 to CdxZn1-xTe quantum wires occurred at a Cd mole fraction of 0.8. Photoluminescence spectra showed that the excitonic peak corresponding to the transition from the ground electronic subband to the ground heavy-hole band in CdxZn1-xTe/ZnTe nanostructures shifted to a lower energy with increasing Cd mole fraction. The activation energy of the electrons confined in the CdxZn1-xTe/ZnTe QDs with a Cd mole fraction of 0.6 was higher than those of electrons in CdxZn1-xTe/ZnTe nanostructures.
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