Bryant, G.
and Jaskolski, W.
(2001),
Designing Quantum Dots and Quantum-Dot Solids, Physica E-Low-Dimensional Systems & Nanostructures
(Accessed July 27, 2024)
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Designing Quantum Dots and Quantum-Dot Solids
Published
Author(s)
, W Jaskolski
Abstract
To design nanocrystal nanosystems a theory for nanocrystals is needed which can be applied to nanocrystals with atomic-scale variations in composition, structure and shape. We present an empirical tight-binding theory for nanocrystal heteroanostructures. Electronic structure and optical absorption spectra are obtained for CdS/HgS/CdS and ZnS/CdS/ZnS quantum-dot quantum-well barrier/well/barrier nanocrystals. Comparison with experiment shows that tight-binding theory provides a good description of nanosystems with monolayer variations in composition. Well/barrier and well/barrier/well nanocrystal heteronanostructures are modeled to illustrate state and energy-level engineering in nanocrystal nanostytems.Citation
Physica E-Low-Dimensional Systems & Nanostructures
Volume
11
Issue
No. 2-3
Pub Type
Journals
Keywords
electronic structure, nanocrystal, optical absorption, quantum dot, semiconductor
Citation
Issues
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Created October 1, 2001, Updated February 17, 2017