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Designing Quantum Dots and Quantum-Dot Solids

Published

Author(s)

Garnett W. Bryant, 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

Keywords

electronic structure, nanocrystal, optical absorption, quantum dot, semiconductor

Citation

Bryant, G. and Jaskolski, W. (2001), Designing Quantum Dots and Quantum-Dot Solids, Physica E-Low-Dimensional Systems & Nanostructures (Accessed April 23, 2024)
Created October 1, 2001, Updated February 17, 2017