TY - JOUR A1 - Paulus, Daniel A1 - Bresch, Sophie A1 - Moos, Ralf A1 - Schönauer-Kamin, Daniela T1 - Powder aerosol deposited calcium cobaltite as textured P-type thermoelectric material with power factors approaching single crystal values JF - Journal of the European Ceramic Society N2 - In this work, the thermoelectric material calcium cobaltite Ca3Co4O9 (CCO), a promising p-type conducting thermoelectric oxide with anisotropic properties, was processed by the powder aerosol deposition method (PAD) to form a dense ceramic CCO film with a thickness in the µm range. The prepared films were characterized regarding their microstructure and thermoelectric properties between room temperature and 900 °C. After heat treatment at 900 °C, the CCO PAD film in-plane shows excellent properties in terms of electrical conductivity (280 S/cm at 900 °C) and Seebeck coefficient (220 µV/K at 900 °C). The calculated power factor in-plane (ab) reaches with 1125 µW/(m K2) 40 % of the single crystal value, surpassing the known-properties of CCO bulk ceramics. Examination of the microstructure shows a strong fiber texture of the film as well as a strong coarsening of the grains during the first heat treatment up to 900 °C. KW - thermoelectrics KW - calcium cobaltite KW - thermoelectric oxide KW - aerosol deposition method (ADM) PY - 2024 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-606246 DO - https://doi.org/10.1016/j.jeurceramsoc.2024.116717 VL - 44 IS - 15 SP - 1 EP - 8 PB - Elsevier BV AN - OPUS4-60624 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -