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Orientation of tetracene as a large hydrocarbon on Si(111)-(7 × 7) and oxidized Si(111)

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Schedel,  Thomas
Fritz Haber Institute, Max Planck Society;

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Koch,  Ernst-Eckhard
Fritz Haber Institute, Max Planck Society;

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Citation

Schedel, T., Frank, K.-H., Karlsson, U., & Koch, E.-E. (1990). Orientation of tetracene as a large hydrocarbon on Si(111)-(7 × 7) and oxidized Si(111). Vacuum, 41(1-3), 652-655. doi:10.1016/0042-207X(90)90445-5.


Cite as: http://hdl.handle.net/21.11116/0000-0007-1ADE-3
Abstract
Near-edge X-ray absorption spectroscopy (NEXAFS) has been used to study the orientation of tetracene on clean Si(111)-(7 × 7) and on oxidized Si(111). From an analysis of the polarization of the resonances we conclude that thin layers of tetracene (∼ 1 monolayer) are adsorbed on Si(111) with the molecular plane essentially parallel to the surface. On the oxidized Si(111) surface, tetracene is adsorbed at low coverages (∼ 1–2 monolayers) with the molecular plane perpendicular to the surface.