High-temperature stability of thermoelectric Ca3Co4O9 thin films
نویسندگان
چکیده
منابع مشابه
Nanostructural Tailoring to Induce Flexibility in Thermoelectric Ca3Co4O9 Thin Films
Because of their inherent rigidity and brittleness, inorganic materials have seen limited use in flexible thermoelectric applications. On the other hand, for high output power density and stability, the use of inorganic materials is required. Here, we demonstrate a concept of fully inorganic flexible thermoelectric thin films with Ca3Co4O9-on-mica. Ca3Co4O9 is promising not only because of its ...
متن کاملThermoelectric properties of Ca3Co4O9 and Ca2.8Bi0.2Co4O9 thin films in their island formation mode
Ca3Co4O9 and Ca2.8Bi 0.2Co4O9 thin films were fabricated on LaAlO3 (LAO) substrate using pulsed laser deposition technique and were studied for their thermoelectric (TE) properties in Stranski-Krastanov mode for the first time. The thin films consisted of 3D clusters/islands on a 14-nm thick 2D layer with cluster density being higher for Ca 2.8Bi0.2Co4O9 thin films. The clusters also represent ...
متن کاملEffect of substrate on the atomic structure and physical properties of thermoelectric Ca3Co4O9 thin films
The incommensurately layered cobalt oxide Ca3Co4O9 exhibits an unusually high Seebeck coefficient as a polycrystalline bulk material, making it ideally suited for many high temperature thermoelectric applications. In this paper, we investigate properties of Ca3Co4O9 thin films grown on cubic perovskite SrTiO3, LaAlO3, and (La0.3Sr0.7)(Al0.65Ta0.35)O3 substrates and on hexagonal Al2O3 (sapphire)...
متن کاملLocal structure of thermoelectric Ca3Co4O9
We have combined temperature-dependent local structural measurements with first-principles densityfunctional calculations to develop a three-dimensional local structure model of the misfit system Ca2CoO3 CoO2 1.61 referred to as Ca3Co4O9 which has a rocksalt structure stacked incommensurately on a hexagonal CoO2 lattice. The local structural measurements reveal a low coordination of Co 2 -O bon...
متن کاملHigh-Temperature Thermoelectric Characterization of III–V Semiconductor Thin Films by Oxide Bonding
1.—Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA 93106, USA. 2.—Materials Science and Engineering Department, University of Delaware, Newark, DE 19716, USA. 3.—Materials Department, University of California, Santa Barbara, CA 93106, USA. 4.—Department of Electrical Engineering, University of California, Santa Cruz, CA 95064, USA. 5.—e-mail: jhbah...
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2015
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.4917275