University of Stuttgart, 3. Physikalisches Institut, D-70550 Stuttgart, Germany

Structure and Ordering Principles of Ultrathin Organic Molecular Films on Surfaces of Layered Semiconductors - Organic-on-Inorganic MBE

Epitaxially ordered thin films of large planar organic molecules can be obtained on layered inorganic semiconductors by organic molecular beam deposition in UHV. Analysis by low energy electron diffraction (LEED) and thermal desorption spectroscopy (TDS) yields structural parameters and binding energies. The conditions necessary for order formation are analyzed. Epitaxial data are given for hexabenzocoronene (HBC) and naphthalene-tetracarboxylic-dianhydride (NTCDA) on graphite, MoS₂ and GeS.

Keywords: Organic melecular beam epitaxy (OMBE). LEED, TDS, molecular thin films, hexabenzocoronene, NTCDA

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