Regensburg 2010 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 27: Poster: Organic Electronics and Photovoltaics
CPP 27.4: Poster
Mittwoch, 24. März 2010, 17:30–19:00, Poster C
Fabrication of hierarchically ordered crystalline titania thin films — •Martin Niedermeier1, Gunar Kaune1, Monika Rawolle1, Volker Körstgens1, Matthias Ruderer1, Jochen S. Gutmann2, and Peter Müller-Buschbaum1 — 1TU München, Physik-Department LS E13, James-Franck-Str. 1, D-85747 Garching (Germany) — 2Max-Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz (Germany)
Thin films of nanostructured titania have received a lot of attention in various applications such as photovoltaics within the last years. Having a well defined morphology is crucial for the functionality and performance of these films because it defines the volume to surface ratio and thereby the surface being available for interface reactions. Increasing the total film thickness is a common approach in order to increase the surface area. The present work focuses on the fabrication of hierarchically structured titania thin films and their crystallinity. A layer-by-layer spin-coating approach is investigated. A solution based sol-gel process using diblock copolymers as a template to obtain nanocomposite films is followed by calcination to obtain crystalline titania structures. The obtained structures are investigated using several imaging techniques like SEM and AFM. The crystallinity and the thickness of the films are analyzed with XRD and XRR.