Organic semiconducting thin film growth on an organic substrate: 3,4,9,10-perylenetetracarboxylic dianhydride on a monolayer of decanethiol self-assembled on Au(111)

Journal Article · Wed Mar 15 04:00:00 EST 2000 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.61.7678· OSTI ID:20215756

Gerstenberg, M C ^[1]; Schreiber, F ^[2]; Leung, T Y. B. ^[1]; Bracco, G ^[3]; Forrest, S R ^[1]; Scoles, G ^[1]

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1. Princeton Materials Institute, Princeton University, Princeton, New Jersey 08544 (United States)
2. Institut fuer Theoretische und Angewandte Physik, Universitaet Stuttgart, 70550 Stuttgart, (Germany)
3. Chemistry Department and Princeton Materials Institute, Princeton University, Princeton, New Jersey 08544 (United States)

We use surface x-ray diffraction to study the structure of organic-organic heterojunctions grown by organic molecular-beam deposition. In particular, we study films of 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) grown on a decanethiol self-assembled monolayer (SAM) on a Au(111) surface. The deposition of several ({approx_equal}16) monolayers of PTCDA results in unstrained crystalline films whose (012) lattice planes are rotated 21.6 degree sign with respect to the <112(bar sign)> Au azimuthal direction. This alignment, which is different from that of PTCDA on the bare Au(111) surface, is most likely caused by the corrugation of the SAM surface [with the c(4x2) superlattice of the (sq root)(3)x{radical}(3)R30 degree sign unit cell]. The SAM structure was found to be unaltered by the presence of the PTCDA overlayer. In addition, the heterogeneous PTCDA/SAM/Au structure, acting as an x-ray interferometer with the SAM as a spacer, allows for the precise determination of the SAM thickness. (c) 2000 The American Physical Society.

• OSTI ID: 20215756
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 11 Vol. 61; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DEPOSITION
EXPERIMENTAL DATA
GOLD
ORGANIC SEMICONDUCTORS
STRUCTURAL CHEMICAL ANALYSIS
THIN FILMS
X-RAY DIFFRACTION