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The electronic structure and the band gap of nano-sized Si particles : competition between quantum confinement and surface reconstruction

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AppPhyA7020005.pdf
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2000

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Maus, Martin
Eberhardt, Wolfgang

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Applied Physics / A. 2000, 70(5), pp. 535-539. Available under: doi: 10.1007/s003390051075

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The electronic structure and especially the band gap of Sin clusters (n=3 45 atoms) is studied by photoelectron spectroscopy. Contrary to expectations of quantum confinement, almost all clusters studied here have a band gap smaller than that of crystalline Si or even display a continuous (metallic) density of states. We attribute this to covalent bond formation analogous to the reconstructions observed on single-crystal surfaces. Additionally, for Si30 and Si33 a gap size of 0.6 eV (0.4 eV) is observed, supporting the prediction of stable, spherically symmetric structures of these particular clusters.

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ISO 690MAUS, Martin, Gerd GANTEFÖR, Wolfgang EBERHARDT, 2000. The electronic structure and the band gap of nano-sized Si particles : competition between quantum confinement and surface reconstruction. In: Applied Physics / A. 2000, 70(5), pp. 535-539. Available under: doi: 10.1007/s003390051075
BibTex
@article{Maus2000elect-5148,
  year={2000},
  doi={10.1007/s003390051075},
  title={The electronic structure and the band gap of nano-sized Si particles : competition between quantum confinement and surface reconstruction},
  number={5},
  volume={70},
  journal={Applied Physics / A},
  pages={535--539},
  author={Maus, Martin and Ganteför, Gerd and Eberhardt, Wolfgang}
}
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