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Molecular-scale structural distortion near vacancies in pentacene

Appl. Phys. Lett. 92, 153313 (2008); doi:10.1063/1.2913687

Published 18 April 2008

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S. Seo,1 L. C. Grabow,2 M. Mavrikakis,2 R. J. Hamers,3 N. J. Thompson,4 and P. G. Evans4
1Materials Science Program, University of Wisconsin, Madison, Wisconsin 53706, USA
2Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin 53706, USA
3Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, USA
4Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706, USA
Molecular vacancies form in both of the crystallographic basis sites of thin pentacene crystals. Features in scanning tunneling microscopy images of these crystals correspond to the exposed terminal atoms of molecules. The (001) and (00[overline 1]) surfaces of pentacene are distinguishable, which allows for the identification of the absolute orientation of crystals and for the unambiguous assignment of the position of molecules relative to each vacancy. For vacancies in each molecular basis site of the pentacene (001) surface, the image feature associated with one molecular nearest neighbor is displaced by significantly more than other molecules. ©2008 American Institute of Physics
History: Received 16 February 2008; accepted 3 April 2008; published 18 April 2008
Permalink: http://link.aip.org/link/?APPLAB/92/153313/1
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KEYWORDS and PACS

Keywords
PACS
  • 61.72.jd
    Vacancies (point defects)
  • 68.35.bg
    Surface structure of semiconductors
  • YEAR: 2008

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ISSN:
0003-6951 (print)   1077-3118 (online)
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