AVS 47th International Symposium
    Organic Films and Devices Thursday Sessions
       Session OF+EL+SS-ThM

Paper OF+EL+SS-ThM11
Interface of Aluminum and Poly(vinylidene fluoride with Trifluoroethylene) Copolymer

Thursday, October 5, 2000, 11:40 am, Room 313

Session: Organic Thin Films
Presenter: B. Xu, University of Nebraska, Lincoln
Authors: B. Xu, University of Nebraska, Lincoln
C.N. Borca, University of Nebraska, Lincoln
S. Ducharme, University of Nebraska, Lincoln
A.V. Sorokin, University of Nebraska, Lincoln
P.A. Dowben, University of Nebraska, Lincoln
V.M. Fridkin, Institute of Crystallography, Russia
S.P. Palto, Institute of Crystallography, Russia
N. Petukhova, Institute of Crystallography, Russia
S.G. Yudin, Institute of Crystallography, Russia
Correspondent: Click to Email
The interface between aluminum and crystalline copolymer thin films of vinylidene fluoride (70%) with trifluoroethylene (30%) [PVDF-TrFE] has been studied. The ratio of carbon 1s and aluminum 2p core level photoemission peak intensities changes little with increasing emission angle, even after deposition of 5 Å aluminum on the surface of PVDF-TrFE. This indicates that the distribution of aluminum atoms in the copolymer film is quite uniform in the near surface region and that the interface is not abrupt. The contributions to the C 1s core level shift ~1eV to lower binding energy, while the relative ratio of the intensity of C 1s peaks changes, provides further evidence for changes in screening with aluminum doping within the polymer film. The XRD data also shows the crystalline structure of the copolymer film can be deformed with aluminum doping, if the polymer film is annealed.