Journal ArticleDOI
Demonstration of electron filtering to increase the Seebeck coefficient in In 0.53 Ga 0.47 As ∕ In 0.53 Ga 0.28 Al 0.19 As superlattices
Joshua M. O. Zide,Daryoosh Vashaee,Zhixi Bian,Gehong Zeng,John E. Bowers,Ali Shakouri,Arthur C. Gossard +6 more
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In this paper, the authors explore electron filtering as a technique to increase the Seebeck coefficient and the thermoelectric power factor of heterostructured materials over that of the bulk.Abstract:
In this paper, we explore electron filtering as a technique to increase the Seebeck coefficient and the thermoelectric power factor of heterostructured materials over that of the bulk We present a theoretical model in which the Seebeck coefficient and the power factor can be increased in an ${\mathrm{In}}_{053}{\mathrm{Ga}}_{047}\mathrm{As}$-based composite material Experimental measurements of the cross-plane Seebeck coefficient are presented and confirm the importance of the electron filtering technique to decouple the electrical conductivity and Seebeck coefficient to increase the thermoelectric power factorread more
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[The 4th Thin Film and Surface Physics Division Award Speech] Methodology of thermoelectric power factor enhancement by controlling nanowire interface
Takafumi Ishibe,Atsuki Tomeda,Kentaro Watanabe,Yoshinari Kamakura,Nobuya Mori,Nobuyasu Naruse,Yutaka Mera,Yuichiro Yamashita,Yoshiaki Nakamura +8 more
TL;DR: In this paper, the authors proposed a method for the power factor enhancement by introducing coherent homoepitaxial interfaces with controlled dopant concentration, which enables the quasiballistic transmission of high-energy carriers.
Journal ArticleDOI
Impact of Coinage Metal Insertion on the Thermoelectric Properties of GeTe Solid-State Solutions
Bhuvanesh Srinivasan,Régis Gautier,Francesco Gucci,Bruno Fontaine,Jean-François Halet,François Cheviré,Catherine Boussard-Plédel,Michael J. Reece,Bruno Bureau +8 more
TL;DR: In this article, a comprehensive study on the thermoelectric effect of Ag substitution in GeTe solid solutions, a congenital base for highly efficient TAGS-m [(GeTe)m(AgSbTe2)100 −m] materials, was performed.
Journal ArticleDOI
Rigorous calculation of the Seebeck coefficient and mobility of thermoelectric materials
TL;DR: In this paper, the Seebeck coefficient of a typical thermoelectric material is calculated without recourse to the relaxation time approximation (RTA), and the agreement to experimentally obtained values is found to be satisfactory.
Journal ArticleDOI
Enhanced thermoelectric properties of Au nanodot-included Bi2Te3 nanotube composites
Eunsil Lee,Jieun Ko,Jong-Young Kim,Won Seon Seo,Soon-Mok Choi,Kyu Hyoung Lee,Wooyoung Shim,Wooyoung Lee +7 more
TL;DR: In this article, a scalable synthesis of Au nanodots (Au-ND)/Bi2Te3 nanotube (BT-NT) nanocomposites by the bottom-up synthesis of hybrid raw materials and subsequent spark plasma sintering, and their thermoelectric properties were systematically compared with those of Au-doped Bi2Te 3 compounds.
Journal ArticleDOI
Tuning phonon transport spectrum for better thermoelectric materials
Takuma Hori,Junichiro Shiomi +1 more
TL;DR: Recent advances in analyzing spectral impedance of phonon transport on the basis of various effects including alloy scattering, boundary scattering, and particle resonance are reviewed.