Designing nanocrystal nanosystems: Quantum-dot quantum-wells to quantum-dot solids

Citation
Gw. Bryant et W. Jaskolski, Designing nanocrystal nanosystems: Quantum-dot quantum-wells to quantum-dot solids, PHYS ST S-B, 224(3), 2001, pp. 751-755
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA STATUS SOLIDI B-BASIC RESEARCH
ISSN journal
0370-1972 → ACNP
Volume
224
Issue
3
Year of publication
2001
Pages
751 - 755
Database
ISI
SICI code
0370-1972(200104)224:3<751:DNNQQT>2.0.ZU;2-R
Abstract
To design nanocrystalline nanosystems, a theory for nanocrystals is needed which can be: applied to nanocrystals with atomic-scale variations in compo sition, structure and shape. We present an empirical tight-binding theory f or nanocrystal heteronanostructures. Electronic structure and optical absor ption spectra are obtained for CdS/HgS/CdS and ZnS/CdSZnS quantum-dot quant um-well nanocrystals. Comparison with experiment shows that tight-binding t heory provides a good description of nanosystems with monolayer variations in composition. Issues for designing nanocrystal heteronanostructures are d iscussed.