Controlling the electronic structure of nanocrystal assemblies by variation of the particle-particle interaction

The change in the electronic structure of germanium nanocrystals is investigated as their concentration is increased from noninteracting, individual particles to assembled arrays of particles. The electronic structure of the individual nanoclusters shows clear effects due to quantum confinement whic...

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Bibliographic Details
Published in:Applied physics letters 2004-11, Vol.85 (22), p.5334-5336
Main Authors: Bostedt, C., van Buuren, T., Willey, T. M., Terminello, L. J.
Format: Article
Language:English
Subjects:
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONFINEMENT
ELECTRONIC STRUCTURE
GERMANIUM
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
MATERIALS SCIENCE
PARTICLE INTERACTIONS
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Summary:The change in the electronic structure of germanium nanocrystals is investigated as their concentration is increased from noninteracting, individual particles to assembled arrays of particles. The electronic structure of the individual nanoclusters shows clear effects due to quantum confinement which are lost in the concentrated assemblies of bare particles. When the surface of the individual particles is passivated, they retain their quantum confinement properties also upon assembly. These effects are interpreted in terms of a particle-particle interaction model.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1828238