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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Journal ArticleDOI
Substantial local variation of the Seebeck coefficient in gold nanowires
TL;DR: A study of the spatial distribution of the photothermoelectric voltage in thin-film nanowire devices fabricated from a single metal through a combination of direct absorption and excitation of a plasmon resonance in Au devices.
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The Fragility of Thermoelectric Power Factor in Cross-Plane Superlattices in the Presence of Nonidealities: A Quantum Transport Simulation Approach
TL;DR: In this paper, a quantum-mechanical simulation based on the nonequilibrium Green's function method was used to evaluate the Seebeck coefficient and power factor of cross-plane superlattices.
Journal ArticleDOI
Enhanced Thermoelectric Properties and Superlattice Structure of a Bi2Te3/ZrB2 Film Prepared by Ion-Beam-Assisted Deposition
TL;DR: In this article, a multilayered Bi2Te3/ZrB2 superlattice film with a modulation period (Λ) of 12 nm was successfully fabricated by simple ion-beam-assisted deposition on a large scale.
Journal ArticleDOI
Thin film thermoelectric characterization techniques
TL;DR: In this paper, the authors describe both in-plane and cross-plane measurement methodologies for thin-film thermoelectric characterization, including the four-probe and van der Pauw methods for electrical conductivity measurement.
Journal ArticleDOI
High-Performance n-type SnSe Thermoelectric Polycrystal Prepared by Arc-Melting
Javier Gainza,Federico Serrano-Sánchez,João Elias Figueiredo Soares Rodrigues,Yves Huttel,Oscar J. Dura,Michael Marek Koza,María Teresa Fernández-Díaz,Juan J. Meléndez,Bence G. Márkus,Bence G. Márkus,Ferenc Simon,Ferenc Simon,José Luis Martínez,José Antonio Alonso,Norbert M. Nemes,Norbert M. Nemes +15 more
TL;DR: In this paper, undoped n-type polycrystalline Tin Selenide (SnSe) is synthesized by arc-melting as robust pellets, with thermoelectric properties repeatably changing to negative Seebeck-coefficient above 580 K reaching a figure of merit ∼1.8 at 816 K.