Angle-resolved ultraviolet photoelectron spectroscopy of expitaxial films of vanadyl-phthalocyanine grown on alkali halides |
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| Authors: | Kawaguchi T. Tada H. Koma A. |
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| Affiliation: | (1) Department of Chemistry, School of Science, University of Tokyo, Bunkyo-ku, 113 Tokyo, Japan;(2) Present address: Communications Research Laboratory, Kansai Advanced Research Center, 588-2 Iwaoka, Nishi-ku, 651-24 Kobe, Japan |
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| Abstract: | The molecular orientation of Vanadyl-Phthalocyanine (VOPc) grown on alkali halides was studied by Angle-Resolved Ultraviolet Photoelectron Spectroscopy (ARUPS). To avoid charging up of the specimen during ARUPS measurment, thin epitaxial films of alkali halides grown on GaAs (0 0 1) were used as substrates. Photoelectrons emitted from the highest occupied molecular orbital band of VOPc showed strong angular distribution leading to the conclusion that the molecules stay almost parallel on the surface. This was in accordance with the expectation based on the reflection high-energy electron diffraction analysis of the film. |
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| Keywords: | 68.55.Bd 79.60.-i 68.35.Bs |
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