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HL: Fachverband Halbleiterphysik

HL 7: Organic electronics and photovoltaics I (organized by CPP)

HL 7.3: Vortrag

Montag, 31. März 2014, 10:15–10:30, ZEU 222

Spray deposition of zinc oxide nanostructured films for applications in dye-sensitized solar cells — •Kuhu Sarkar¹, Erik V. Braden¹, Stefan Pogorzalek¹, Shun Yu², Stephan V. Roth², and Peter Müller-Buschbaum¹ — ¹TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching — ²DESY, Notkestr. 85, 22607 Hamburg

Zinc oxide (ZnO) has emerged as a suitable alternative to titania (TiO2) in the recent years in the field of dye-sensitized solar cells (DSSCs). The inorganic metal oxide films for DSSCs are highly desirable to have an increased surface for enhanced adsorption of a photosensitizer. Hence, nanostructured films of ZnO are synthesized from a solution based approach. Different deposition techniques are investigated to have a significant film thickness for a considerable amount of light absorption. In this respect, spray deposition is shown to be a highly efficient and scalable technique to produce films matching the above-mentioned criteria. Surface as well as bulk morphology of the films have been studied using SEM and GISAXS. These ZnO films are successfully shown to provide good performance in a dye-sensitized solar cell with the highest short circuit current density reported so far.