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DS: Dünne Schichten

DS 14: Schichtwachstum

DS 14.1: Vortrag

Mittwoch, 10. März 2004, 14:30–14:45, HS 32

Microstructure of polymer-metal composite thin films grown by pulsed laser deposition — •Jörg Faupel, Thorsten Scharf, and Hans-Ulrich Krebs — Institut für Materialphysik, Universität Göttingen, Tammannstrasse 1, D-37077 Göttingen

Polymer-metal composites have a wide range of applications ranging from food-packaging to microelectronics. Using an excimer laser of 248nm wavelength and 30ns pulseduration, polymer-metal composites were prepared in UHV at room temperature. For the polymer matrix BPA-polycarbonate (PC) was used, as metals Ag, Au, Cu and Pd. The samples were characterised by x-ray reflectivity and TEM using top and also cross-sectional view. The size of the spherical Ag and Au grains, embedded in a PC matrix, can be controlled by the pulse number during deposition. In the case of Cu and Pd in comparison, smaller and more grains and also a different growth behaviour is found. For polymer/metal multilayers deposited the first time by pulsed laser deposition, the interface roughness strongly depends on the used metal.

Differences between the polymer-metal systems are discussed with respect to the different diffusion coefficients, reactivities and growth mechanisms of the used metals on the polymer surface.