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Updated: Jun 30, 2026
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Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
Published on: August 15, 2015
Recent progress in oxide thermoelectric materials: p-type Ca3Co4O9 and n-type SrTiO3(-)
Hiromichi Ohta1, Kenji Sugiura, Kunihito Koumoto
1Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan. h-ohta@apchem.nagoya-u.ac.jp.
Inorganic Chemistry
|September 30, 2008
Summary
High-performance oxide thermoelectric films, including Ca3Co4O9 and SrTiO3, show promise for waste heat energy conversion. Researchers highlight their robust properties and potential for high-temperature applications.
Area of Science:
- Materials Science
- Energy Conversion
- Solid State Physics
Background:
- Thermoelectric energy conversion, converting waste heat to electricity, is gaining attention.
- Metal oxides are promising thermoelectric materials for high-temperature applications due to their chemical and thermal robustness compared to metallic alloys.
Purpose of the Study:
- To review the thermoelectric properties of representative oxide epitaxial films.
- To highlight the potential of p-type Ca3Co4O9 and n-type SrTiO3 for efficient thermoelectric power generation.
Main Methods:
- Fabrication of high-quality epitaxial films of oxide thermoelectric materials.
- Focus on reviewing thermoelectric properties, including the figure of merit (ZT).
Main Results:
- Ca3Co4O9 and SrTiO3 exhibit the best thermoelectric figures of merit (ZT) among reported oxide thermoelectric materials.
- Discovery of a giant Seebeck coefficient (S) in two-dimensional electrons confined in SrTiO3.
Conclusions:
- Epitaxial oxide films are crucial for understanding intrinsic thermoelectric properties.
- These materials offer significant potential for advanced thermoelectric power generation and waste heat recovery.
