Structure and transport properties of isomer-separated C82

Y. Kubozono, Y. Rikiishi, K. Shibata, T. Hosokawa, S. Fujiki, H. Kitagawa

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19 Citations (Scopus)

Abstract

Structure of isomer-separated crystalline C82 has been studied by powder x-ray diffraction with synchrotron radiation. The Rietveld refinement was achieved by assuming a simple cubic lattice (space group Pa3). The C 2(a) symmetry for the C82 molecule was supported in this analysis. Transport properties of thin film of C82 have been studied by resistivity measurement. The thin film showed a narrow-gap semiconductorlike behavior with gap energy of 0.43 eV. The field effect transistor (FET) of a C82 thin film showed an n-channel normally-on depletion-type behavior, and the mobility was 1.9×10-3 cm2 V -1 s-1 whose value was one of the largest μ among normally-on FETs with fullerenes. A hopping transport was found as channel conduction for the C82 FET above 150 K.

Original languageEnglish
Article number165412
Pages (from-to)165412-1-165412-7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number16
DOIs
Publication statusPublished - Apr 1 2004

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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