Molecular adsorption and growth of naphthalene films on Ag(100)
- Autor: Ruppel, L. / Birkner, A. / Witte, G. / Busse, C. / Lindner, Th. / Paasch, G. / Wöll, C. (2007)
- Quelle: J. Appl. Phys. 102 (2007), 033708
- Datum: 2007
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Tzvetkov, G. / Schmidt, N. / Strunskus, T. / Wöll, C. / Fink, R. (2007): „Molecular adsorption and growth of naphthalene films on Ag(100)“. In: Surf. Sci. 601 (2007), 9, 2089-2094
Abstract
The adsorption of naphthalene, vacuum deposited on a Ag(1 0 0) surface, was comprehensively investigated by means of low-energy electron diffraction (LEED), temperature-programmed thermal desorption (TPD) spectroscopy, X-ray photoelectron spectroscopy (XPS), and polarization-dependent near-edge X-ray absorption fine structure (NEXAFS) spectroscopy in the mono- and multilayer regime.
A growth of long-range ordered monolayer at 140 K is observed with LEED. The polarization-dependent C 1s NEXAFS shows that the naphthalene molecules in the monolayer lie almost parallel to the Ag(1 0 0) surface. With increasing film thickness, the molecular orientation turns to upright position. Furthermore, NEXAFS measurements show that in the multilayer regime the molecular orientation depends on the substrate temperature during deposition.
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A growth of long-range ordered monolayer at 140 K is observed with LEED. The polarization-dependent C 1s NEXAFS shows that the naphthalene molecules in the monolayer lie almost parallel to the Ag(1 0 0) surface. With increasing film thickness, the molecular orientation turns to upright position. Furthermore, NEXAFS measurements show that in the multilayer regime the molecular orientation depends on the substrate temperature during deposition.
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