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Effects of Quantum Confinement on the Conduction Band Minimum of Semiconductors

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A scheme has been devised to determine the shifts of the conduction band minimum of semiconductors as a function of size from ab-initio calculations. The method has been applied to CdSe as well as GaAs and the shifts determined. A monotonic decrease is found as a function of particle size, as expected. However, the most unusual aspect of our result is that the conduction band bottom approaches bulk-like values for the largest CdSe particles that we have studied here in contrast to expectations from other theories.


Document Type: Research Article

Publication date: September 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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