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Enhanced Thermoelectric Properties of Textured Ca3Co4O9 Thick Film by Aerosol Deposition

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Calcium cobaltite (Ca3Co4O9; CCO349) films with a c-axis texture and a thickness of 60 m were fabricated by aerosol deposition (AD). The films exhibited superior characteristics to those grown by other methods. The pole figure measurements indicated that almost 65% of the films had their c-axis tilted from the surface normal by 30°. The Seebeck voltage and resistivity of the films in the measurement range between room temperature and 900 K were 175 V/K and <20 mΩ·cm, respectively. Based on these results, the AD-CCO349 film is a promising material for thermoelectric generation.
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Document Type: Research Article

Affiliations: Functional Ceramics Research Group, Korea Institute of Materials Science (KIMS), Kyungnam 641-831, Korea

Publication date: August 1, 2010

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