Electronic Structure of Semiconductor Nanocrystals |
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Authors: | Li Jingbo Wang Linwang Wei Suhuai |
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Affiliation: | 1. National Renewable Energy Laboratory, Golden, CO 80401, USA 2. Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA |
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Abstract: | This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors. |
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Keywords: | electronic structure semiconductor nanocrystals |
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