Self-doping and hopping conductivity in amorphous carbon

István László, Sándor Kugler

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Abstract

Graph theory is used to estimate the density of states near the Fermi level (EF) of amorphous carbon (a-C) structure. There are topologically determined energy levels concentrated around the Fermi level. This phenomenon provides a possibility of self-doping. As the hopping conductivity is depending on the energy and spatial separations of the initial and final states the hopping conductivity between topologically determined states is regulated mostly by the spatial separation.

Original languageEnglish
Pages (from-to)831-834
Number of pages4
JournalJournal of Non-Crystalline Solids
Volume137-138
Issue numberPART 2
DOIs
Publication statusPublished - 1991

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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