T. Schmitzhubsch et al., EPITAXIAL-GROWTH OF 3,4,9,10-PERYLENE-TETRACARBOXYLIC-DIANHYDRIDE ON AU(111) - A STM AND RHEED STUDY, Physical review. B, Condensed matter, 55(12), 1997, pp. 7972-7976
The crystal structure of 3,4,9,10-perylene-tetracarboxylic-dianhydride
(PTCDA) grown by organic molecular-beam epitaxy on reconstructed Au(1
11) surfaces is investigated by scanning tunneling microscopy and refl
ection high-energy electron diffraction. Large domains of PTCDA (up to
200 nm) are found on the still reconstructed Au surface. The reconstr
uction can be used to precisely determine the lattice orientation of t
he PTCDA layers. Three different orientations with respect to the gold
substrate were observed. All of them can be explained in terms of a p
oint-on-line growth model that was originally proposed for explaining
organic epitaxy results on graphite.