Journal ArticleDOI
Large thermoelectric performance of heavily Nb-doped SrTiO3 epitaxial film at high temperature
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TLDR
In this paper, the authors used heavily Nb-doped SrTiO3 epitaxial films, which were grown on insulating (100)-oriented LaAlO3 single-crystalline substrates by a pulsed-laser deposition method.Abstract:
Carrier concentration dependence of the thermoelectric figure of merit, ZT of SrTiO3 at high-temperature (1000 K) is clarified using heavily Nb-doped SrTiO3 epitaxial films, which were grown on insulating (100)-oriented LaAlO3 single-crystalline substrates by a pulsed-laser deposition method. Carrier concentration, Hall mobility, Seebeck coefficient, and thermal conductivity of Nb-doped SrTiO3 epitaxial films were experimentally evaluated at 1000 K with an aid of theoretical analysis. ZT of Nb-doped SrTiO3 increases with Nb concentration and it reaches ∼0.37 (20% Nb doped), which is the largest value among n-type oxide semiconductors ever reported.read more
Citations
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Advanced Thermoelectric Design: From Materials and Structures to Devices
TL;DR: This review aims to comprehensively summarize the state-of-the-art strategies for the realization of high-performance thermoelectric materials and devices by establishing the links between synthesis, structural characteristics, properties, underlying chemistry and physics.
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Giant thermoelectric Seebeck coefficient of a two-dimensional electron gas in SrTiO3
Hiromichi Ohta,Hiromichi Ohta,Sung Wng Kim,Yoriko Mune,Teruyasu Mizoguchi,Kenji Nomura,Shingo Ohta,Takashi Nomura,Yuki Nakanishi,Yuichi Ikuhara,Masahiro Hirano,Hideo Hosono,Kunihito Koumoto +12 more
TL;DR: The present approach using a 2DEG provides a new route to realize practical thermoelectric materials without the use of toxic heavy elements and enhances the Seebeck coefficient without reducing the electrical conductivity.
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Oxide materials for high temperature thermoelectric energy conversion
TL;DR: In this paper, the thermoelectric properties of promising oxide materials are reviewed and approaches for improving performance through doping are discussed, and different types of oxides used for thermocyanide applications are compared.
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Oxide Thermoelectric Materials: A Nanostructuring Approach
TL;DR: In this paper, a review article summarizes previous and ongoing studies on thermoelectric oxide-based materials and further discusses nanostructuring approaches for both SrTiO3 and CaMnO3 materials.
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High Thermoelectric Performance of Dually Doped ZnO Ceramics
TL;DR: In this paper, a third element was added to the co-dopant with Al to achieve a significant improvement in the thermoelectric performance of dense ZnO ceramics.
References
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Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
TL;DR: The effective ionic radii of Shannon & Prewitt [Acta Cryst. (1969), B25, 925-945] are revised to include more unusual oxidation states and coordinations as mentioned in this paper.
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Thermoelectric Cooling and Power Generation
TL;DR: Improved materials would not only help to cool advanced electronics but could also provide energy benefits in refrigeration and when using waste heat to generate electrical power.
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Large thermoelectric power in NaCo 2 O 4 single crystals
TL;DR: In this article, the authors measured and analyzed the transport properties of a single-crystal transition-metal oxide and found that the resistivity is highly anisotropic between in-and out-of-plane directions.
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High‐temperature thermoelectric properties of (Zn1−xAlx)O
TL;DR: In this paper, a mixed oxide (Zn1−x Al x )O exhibits promising thermoelectric properties attaining a dimensionless figure of merit ZT of 0.30 at 1000°C, which value is much superior to other oxides and quite comparable to conventional state-of-the-art thermolectricmaterials.
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Large thermoelectric response of metallic perovskites: Sr 1 − x La x TiO 3 ( 0 x 0 . 1 )
TL;DR: In this paper, a large power factor (defined as the Seebeck coefficient and resistivity) was found for single crystals of the Ti O 3d conduction band with a carrier density (n) of 0.1.