Molecular beam deposition of perylene on copper: formation of ordered phases
- Autor: Söhnchen, S. / Hänel, K. / Birkner, A. / Witte, G. / Wöll, C. (2005)
- Quelle: Chem. Mater. 17 (2005), 5297-5304
- Datum: 2005
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Söhnchen, S. / Hänel, K. / Birkner, A. / Witte, G. / Wöll, C. (2005): „Molecular beam deposition of perylene on copper: formation of ordered phases“. In: Chem. Mater. 17 (2005), 5297-5304
Abstract
The growth of ultrathin perylene films on Cu(110) and Cu(100) surfaces has been studied by means of He atom scattering, low-energy electron diffraction, scanning tunneling microscopy, thermal desorption spectroscopy, and X-ray photoelectron spectroscopy with a special emphasis on the interface structure.
In addition to several ordered submonolayer phases, two distinctly different monolayer structures were found at substrate temperatures below 380 K and at about 450 K on Cu(110).
The rather open saturation structure formed at elevated temperatures reveals an enhanced density of substrate steps, which indicates an adsorption-induced modification of the Cu(110) surface. In contrast to that, on Cu(100), only a close-packed c(8 × 4) monolayer structure is formed without any less-dense-packed structures.
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In addition to several ordered submonolayer phases, two distinctly different monolayer structures were found at substrate temperatures below 380 K and at about 450 K on Cu(110).
The rather open saturation structure formed at elevated temperatures reveals an enhanced density of substrate steps, which indicates an adsorption-induced modification of the Cu(110) surface. In contrast to that, on Cu(100), only a close-packed c(8 × 4) monolayer structure is formed without any less-dense-packed structures.
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