This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1088/1367-2630/12/8/083038 in citations.
Please use the identifier: http://hdl.handle.net/2128/28967 in citations.
Submonolayer growth of copper-phthalocyanine on Ag(111)
Submonolayer growth of copper-phthalocyanine on Ag(111)
The growth of high-quality thin films is a key issue in the ability to design electronic devices based on organic materials and to tune their properties. In this context, the interfaces between metals and organic films play a decisive role. Here, we report on the interface formation between copper-p...
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Personal Name(s): | Kröger, I. |
---|---|
Stadtmüller, B. / Stadler, C. / Ziroff, J. / Kochler, M. / Stahl, A. / Pollinger, F. / Lee, T.-L. / Zegenhagen, J. / Reinert, F. / Kumpf, C. | |
Contributing Institute: |
Quantum Nanoscience; PGI-3 JARA-FIT; JARA-FIT |
Published in: | New journal of physics, 12 (2010) S. 083038 |
Imprint: |
[Bad Honnef]
Dt. Physikalische Ges.
2010
|
Physical Description: |
083038 |
DOI: |
10.1088/1367-2630/12/8/083038 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
New Journal of Physics
12 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/28967 in citations.
The growth of high-quality thin films is a key issue in the ability to design electronic devices based on organic materials and to tune their properties. In this context, the interfaces between metals and organic films play a decisive role. Here, we report on the interface formation between copper-phthalocyanine (CuPc) and an Ag(111) surface using various complementary methods. High-resolution low-energy electron diffraction revealed a rich phase diagram for this system with disordered (two-dimensional (2D)-gas-like) and ordered structures (commensurate and point-on-line). In particular, a continuous change in lattice parameters with increasing coverage was found for long-range ordered structures, indicating a substrate-mediated repulsive intermolecular interaction similar to the case of tin-phthalocyanine/Ag(111). Chemisorptivebonding to the substrate was found by x-ray standing waves and ultraviolet photoelectron spectroscopy, and this weakened with increasing coverage at low temperature. This remarkable effect is correlated to a shift in the highest occupied molecular orbital (HOMO) and a HOMO-1 split off band to higher binding energies. Based on our experimental results, we present a comprehensive study of the adsorption behavior of CuPc/Ag(111), including the mechanisms for phase formation and molecular interaction. |