Regensburg 2007 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 6: Organic Photovoltaics (SYOE 2)
DS 6.5: Vortrag
Montag, 26. März 2007, 17:00–17:15, H32
Preparation and Characterization of Colloidal ZnO:Al Nanoparticles for Organic-Inorganic Hybrid Solar Cells — Jan Friedmann1,2, Daniel Rauh1,2, Volker Lorrmann1,2, Carsten Deibel2, Vladmir Dyakonov1,2, and •Ingo Riedel1 — 1Functional Materials for Energy Technology, ZAE Bayern e.V., Am Hubland, D97074 Würzburg, Germany — 2Experimental Physics VI, Faculty of Physics and Astronomy, Julius-Maximilians University of Würzburg, Am Hubland, D97074 Würzburg, Germany
Colloidal nanoparticles of non-capped ZnO:Al have been wet-chemically synthesized as functional materials for novel hybrid device concepts related to organic photovoltaics. The nanoparticles were characterized by means of optical spectroscopy, current-voltage characterization and magnetic resonance techniques. The material was found to fulfil the requirements to become a fullerene substitute in polymer-based organic solar cells and/or to serve as a wave guiding n-conducting buffer layer between the light absorber and the back-reflecting metal electrode. We fabricated polymer-fullerene bulk heterojunction solar cells with and without ZnO:Al layer. The effects of improved light absorption and enhanced selectivity of the metal electrode are discriminated by optical simulations and electrical interface characterization.