Zeitschrift für Physik B Condensed Matter

, Volume 93, Issue 3, pp 365–373 | Cite as

STM investigations of PTCDA and PTCDI on graphite and MoS2. A systematic study of epitaxy and STM image contrast

  • C. Ludwig
  • B. Gompf
  • J. Petersen
  • R. Strohmaier
  • W. Eisenmenger
Original Contributions


Monolayers of the organic molecules perylene-3,4,9,10-tetra-carboxylic-dianhydride (PTCDA) and diimide (PTCDI) on graphite and MoS2 have been imaged with scanning tunneling microscopy. The epitaxial growth of the two molecules is determined by the intermolecular interaction but nearly independent of the substrate. On both substrates the STM image contrast in the submolecularly resolved images is dominated by the aromatic perylene system whereas the polar oxygen and nitrogen groups are invisible. The correlation of the observed inner structure of the molecules to their molecular structure allows us to compare our results with theoretical considerations.


61.16 Di 68.55 Bd 


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Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • C. Ludwig
    • 1
  • B. Gompf
    • 1
  • J. Petersen
    • 1
  • R. Strohmaier
    • 1
  • W. Eisenmenger
    • 1
  1. 1.Physikalisches InstitutUniversität StuttgartStuttgartGermany

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