Journal ArticleDOI
Field-effect modulation of Seebeck coefficient in single PbSe nanowires.
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TLDR
A novel strategy to control the thermoelectric properties of individual PbSe nanowires using a field-effect gated device and direct electrical field control of sigma and S suggests a powerful strategy for optimizing ZT in thermoeLECTric devices.Abstract:
In this Letter, we present a novel strategy to control the thermoelectric properties of individual PbSe nanowires. Using a field-effect gated device, we were able to tune the Seebeck coefficient of single PbSe nanowires from 64 to 193 µV·K -1 . This direct electrical field control of σ and S suggests a powerful strategy for optimizing ZT in thermoelectric devices. These results represent the first demonstration of fieldeffect modulation of the thermoelectric figure of merit in a single semiconductor nanowire. This novel strategy for thermoelectric property modulation could prove especially important in optimizing the thermoelectric properties of semiconductors where reproducible doping is difficult to achieve.read more
Citations
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Journal ArticleDOI
Semiconductor nanowires for energy conversion.
Allon I. Hochbaum,Peidong Yang +1 more
TL;DR: It is discovered that the thermoconductivity of the silicon nanowires can be significantly reduced due to phonon scattering, pointing to a very promising approach to design better thermoelectrical materials.
Journal ArticleDOI
25th Anniversary Article: Semiconductor Nanowires – Synthesis, Characterization, and Applications
Neil P. Dasgupta,Jianwei Sun,Jianwei Sun,Chong Liu,Chong Liu,Sarah Brittman,Sarah Brittman,Sean C. Andrews,Sean C. Andrews,Jongwoo Lim,Jongwoo Lim,Hanwei Gao,Hanwei Gao,Ruoxue Yan,Ruoxue Yan,Peidong Yang +15 more
TL;DR: A detailed explanation of the unique properties associated with the one-dimensional nanowire geometry will be presented, and the benefits of these properties for the various applications will be highlighted.
Journal ArticleDOI
Large and Tunable Photothermoelectric Effect in Single-Layer MoS2
Michele Buscema,Maria Barkelid,Val Zwiller,Herre S. J. van der Zant,Gary A. Steele,Andres Castellanos-Gomez +5 more
TL;DR: A large and tunable Seebeck coefficient of the single-layer MoS(2) paves the way to new applications of this material such as on-chip thermopower generation and waste thermal energy harvesting.
Large and Tunable Photothermoelectric Effect in Single-Layer MoS 2
Michele Buscema,Maria Barkelid,Val Zwiller,Herre S. J. van der Zant,Gary A. Steele,Andres Castellanos-Gomez +5 more
TL;DR: In this article, the photoresponse of single-layer MoS2 field effect transistors was studied by scanning photocurrent microscopy and it was shown that the photothermoelectric effect is dominant over the separation of photoexcited electron−hole pairs across the Schottky barriers at the MoS 2/electrode interfaces.
Journal ArticleDOI
Single-molecule electronics: from chemical design to functional devices
Lanlan Sun,Yuri Antonio Diaz-Fernandez,Tina A. Gschneidtner,Fredrik Westerlund,Samuel Lara-Avila,Kasper Moth-Poulsen +5 more
TL;DR: This review aims at highlighting the chemical design and synthesis of single molecule devices as well as their electrical and structural characterization, including a historical overview and the developments during the last 5 years.
References
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Journal ArticleDOI
Thin-film thermoelectric devices with high room-temperature figures of merit
TL;DR: Th thin-film thermoelectric materials are reported that demonstrate a significant enhancement in ZT at 300 K, compared to state-of-the-art bulk Bi2Te3 alloys, and the combination of performance, power density and speed achieved in these materials will lead to diverse technological applications.
Journal ArticleDOI
Enhanced thermoelectric performance of rough silicon nanowires
Allon I. Hochbaum,Renkun Chen,Raul Diaz Delgado,Wenjie Liang,Erik C. Garnett,Mark Najarian,Arun Majumdar,Arun Majumdar,Peidong Yang,Peidong Yang +9 more
TL;DR: In this article, the authors report the electrochemical synthesis of large-area, wafer-scale arrays of rough Si nanowires that are 20-300 nm in diameter.
Journal ArticleDOI
New Directions for Low-Dimensional Thermoelectric Materials**
Mildred S. Dresselhaus,Gang Chen,Ming Y. Tang,Ronggui Yang,Hohyun Lee,Dezhi Wang,Zhifeng Ren,Jean-Pierre Fleurial,Pawan Gogna +8 more
TL;DR: In this article, the ability to achieve a simultaneous increase in the power factor and a decrease in the thermal conductivity of the same nanocomposite sample and for transport in the same direction is discussed.
Journal ArticleDOI
Effect of quantum-well structures on the thermoelectric figure of merit.
TL;DR: In this article, the authors proposed to use quantum-well superlattice structures to enhance the performance of thermoelectric coolers and showed that layering has the potential to increase significantly the figure of merit of a highly anisotropic material.
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Cubic AgPbmSbTe2+m: Bulk Thermoelectric Materials with High Figure of Merit
Kuei Fang Hsu,Sim Loo,Fu Guo,Wei Chen,Jeffrey S. Dyck,Ctirad Uher,Timothy P. Hogan,Efstathios K. Polychroniadis,Mercouri G. Kanatzidis +8 more
TL;DR: In the temperature range 600 to 900 kelvin, the AgPbmSbTe2+m material is expected to outperform all reported bulk thermoelectrics, thereby earmarking it as a material system for potential use in efficient thermoeLECTric power generation from heat sources.