Clustering and gap states in amorphous carbon
- 1 February 1988
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Letters
- Vol. 57 (2), 143-148
- https://doi.org/10.1080/09500838808229624
Abstract
The sp2 sites present in the various forms of amorphous carbon have been shown to form aromatic clusters whose size determines the width of the local band gap. A fluctuating band-edge model is developed to describe the effects of this clustering on the localization of states around the gap. It is shown how localized states exist at energies well above the optical gap of a-C:H.Keywords
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