Regensburg 2013 – scientific programme
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DS: Fachverband Dünne Schichten
DS 17: Focus Session: Thin Film Photovoltaic Materials and Solar Cells I
DS 17.2: Invited Talk
Wednesday, March 13, 2013, 10:00–10:30, H32
Thermoelectric perovskite-type oxides and Heusler phases — •Anke Weidenkaff1,2, Sascha Populoh1, Leyre Sagarna2, Gesine Saucke1, Andrey Shkabko1, and Nina Vogel1 — 1Empa — 2Uni Bern
Solar energy can be converted by photovoltaic and photocatalytic processes or by high temperature conversions using concentrated solar radiation. Metal oxides and oxynitrides with perovskite-type structure show substantial potential for thermoelectric conversion processes using concentrated solar radiation as power source. Dense and highly nanostructured thin films are produced by chimie douce [1] and plasma methods [2]. Compositions and morphologies are changed in order to tune the band structure and defects. The thin films provide an alternative way to receive suitable samples to determine the phonon and charge carrier transport and thermoelectric properties. Advanced analytical tools are applied to unravel the structure-property relationships. References [1] Alfaruq, Dimas S., Otal, Eugenio H, Aguirre, Myriam H., Populoh, Sascha, Weidenkaff, Anke, Thermoelectric properties of CaMnO3 coatings and thin films obtained by soft chemistry synthesis routes, Journal of Materials Research, 27, (2012) 985-990. [2] Vogel-Schäuble, N., Romanyuk, Y.E., Yoon, S., Saji, K.J., Populoh, S., Pokrant, S., Aguirre, M.H., Weidenkaff, A., Thermoelectric properties of nanostructured Al-substituted ZnO thin films, Thin Sold Films, 520 (2012) 6869-6875