Abstract
It is well known that the quantum confinement effects are closely
related to the existence of different behavior for the same material
composition. Due to the reduced size scale of the nanoparticles, the
most part of their forming atoms are at the particle surface, which
needs to be as stable as possible, to avoid phenomena such as
dissolution and photodegradation. This way, methodologies for
semiconductor nanoparticles obtention shall take into account the size,
shape and energy of the final product. However, the relationship between
these parameters is not yet clearly understood for nanometric systems,
specially for those ones which are smaller than 20nm. In this work, we
present and discuss experimental and theoretical data obtained for
nanoparticles of the semiconductor cadmium sulfide (CdS), in order to
contribute for the understanding of the correlation between energetical
and structural properties of nanometric systems in the quantum
confinement regime. (C) 2004 Elsevier B.V. All rights reserved.
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