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DS: Fachverband Dünne Schichten

DS 42: Poster I: Progress in Micro- and Nanopatterning: Techniques and Applications (jointly with O); Spins in Organic Materials; Ion Interactions with Nano Scale Materials; Organic Electronics and Photovoltaics; Plasmonics and Nanophotonics (jointly with HL and O); High-k and Low-k Dielectrics (jointly with DF); Organic Thin Films; Nanoengineered Thin Films; Layer Deposition Processes; Layer Properties: Electrical, Optical, and Mechanical Properties; Thin Film Characterisation: Structure Analysis and Composition; Application of Thin Films

DS 42.28: Poster

Mittwoch, 16. März 2011, 15:00–17:30, P1

Hybrid Solar Cells made of Phthalocyanines and Zinc Oxide Nanowires — •Michael Kozlik, Steffen Milz, Sven Möller, Carsten Ronning, and Torsten Fritz — Institute of Solid State Physics, University of Jena, 07743 Jena, Germany

Hybrid Solar Cells are a topic of recent interest [1]. Usually the inorganic material is combined with organic polymers with increased interface area by using nanostructures. Our aim is to use the better photo current performance of small molecules, i.e. phthalocyanines [2], compared to polymers. Phthalocyanines show a high absorbance in the visible range, which is characterized by UV-Vis spectroscopy. The electronic ground state and the energetic level alignment were investigated using UV photoelectron spectroscopy. ZnO nanowires, synthesized by the vapor-liquid-solid route, are used due to the good conductivity and the transparency in the visible range [3]. A nearly perpendicular nanowire growth was achieved using a ZnO seed layer. The surface-to-volume ratio can be varied by changing the growth parameters. The morphology of the samples was investigated with scanning electron microscopy, while the atomic composition was obtained from X-ray analysis. The substrate and front contact were optimized to remain the high conductivity during nanowire growth. We will also present first results of a hybrid solar cell made of the combination of zinc oxide nanowires and phthalocyanines. References [1] S. Günes et al., Inorg. Chim. Acta 361 (2008) 581. [2] N. Papageorgiou et al., Prog. Surf. Sci. 77 (2004) 139. [3] C. Borchers et al., J. Phys. Chem. B. 110 (2006) 1656.