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Growth of zinc phthalocyanine onto ZnS film investigated by synchrotron radiation-excited X-ray photoelectron and near-edge absorption spectroscopy
- Source :
-
Surface Science . Dec2005, Vol. 596 Issue 1-3, p98-107. 10p. - Publication Year :
- 2005
-
Abstract
- Abstract: The molecular ordering and orientation of zinc phthalocyanine (ZnPc) on a ZnS film as well as the chemical properties of the interface were investigated by X-ray photoelectron and absorption spectroscopy with synchrotron radiation excitation. Core level photoelectron spectra of the substrate and the ZnPc film indicate a weak interaction at the interface. We observe a high molecular ordering, which is enhanced with increasing film thickness. A standing (or highly-tilted) molecular orientation in about 8nm-thick ZnPc films is deduced from the polarization dependence of the N K X-ray absorption spectra. The same result was obtained from excitation energy dependence of the intensity ratio of the two carbon species in C 1s core level spectra. The annealing of the sample up to about 400°C causes a desorption of ZnPc and a stronger interaction between remaining molecules and ZnS. [Copyright &y& Elsevier]
- Subjects :
- *SPECTRUM analysis
*ABSORPTION
*ELECTROMAGNETIC waves
*ABSORPTION spectra
Subjects
Details
- Language :
- English
- ISSN :
- 00396028
- Volume :
- 596
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 19039389
- Full Text :
- https://doi.org/10.1016/j.susc.2005.08.022