期刊
INORGANIC CHEMISTRY
卷 47, 期 19, 页码 8429-8436出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic800644x
关键词
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资金
- New Energy and Industrial Technology Development Organization (NEDO)
- Research from the Ministry of Education, Culture, Sports, Science and Technology [18686054]
- Grants-in-Aid for Scientific Research [18686054] Funding Source: KAKEN
Thermoelectric energy conversion technology to convert waste heat into electricity has received much attention. In addition, metal oxides have recently been considered as thermoelectric power generation materials that can operate at high temperatures on the basis of their potential advantages over heavy metallic alloys in chemical and thermal robustness. We have fabricated high-quality epitaxial films composed of oxide thermoelectric materials that are suitable for clarifying the intrinsic real properties. This review focuses on the thermoelectric properties of two representative oxide epitaxial films, p-type Ca3CO4O9 and n-type SrTiO3, which exhibit the best thermoelectric figures of merit, ZT(=S-2 sigma T kappa(-1), S = Seebeck coefficient, a = electrical conductivity, K = thermal conductivity, and T = absolute temperature) among oxide thermoelectric materials reported to date. In addition, we introduce the recently discovered giant S of two-dimensional electrons confined within a unit cell layer thickness (similar to 0.4 nm) of SrTiO3.
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