Journal ArticleDOI
Enhancement of thermoelectric power of PbTe:Ag nanocomposite thin films
Manju Bala,Srashti Gupta,T. S. Tripathi,Shikha Varma,Surya Kant Tripathi,K. Asokan,D.K. Avasthi +6 more
TLDR
In this article, the enhancement of thermoelectric power of PbTe:Ag nanocomposite thin films, synthesized by the thermal evaporation technique, was investigated.Abstract:
The present study focuses on the enhancement of thermoelectric power of PbTe:Ag nanocomposite thin films, synthesized by the thermal evaporation technique. Thermoelectric measurements were carried out from room temperature to 400 K. It is observed that Ag addition improves the thermoelectric power and crystalline nature of the PbTe thin films. Synchrotron based X-ray diffraction was performed to confirm the phases of the Pb–Ag–Te alloy. This was further reconfirmed by X-ray photoelectron spectroscopy (XPS) and showed the precipitation of Pb on the surface of the PbTe:Ag films. The enhancement of thermoelectric power is thus attributed to the formation of Ag2−xTe alloy and the precipitation of Pb nanostructures on the surface. The origin of such enhancement is understood based on the phenomenon of energy dependent filtering of charge carriers.read more
Citations
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Proceedings ArticleDOI
The inflence of carrier mobility and electrical conductivity of thermoelectricity device for organic/PbTe matrix
Chun-Yu Chen,Shih-Shou Lo +1 more
TL;DR: In this article, a structure built with inorganic and organic material nanostructure arrays was presented, where zinc oxide (ZnO) nanorods were synthesized by hydrothermal method and could be the precursor model to build our nanostructures.
Journal ArticleDOI
PECVD Synthesis and Thermoelectric Properties of Thin Films of Lead Chalcogenides (PbTe)1−x(PbS)x
Yu. M. Kuznetsov,Leonid Mochalov,M. V. Dorokhin,D.G. Fukina,Mikhail Kudryashov,Yu. P. Kudryashova,A. V. Zdoroveyshchev,D. Zdoroveyshchev,I. L. Kalentyeva +8 more
TL;DR: In this article , a ternary-chalcogenide thin film was obtained using the plasma-enhanced chemical-vapor-deposition (PECVD) technique under conditions of a nonequilibrium low-temperature argon plasma of an RF discharge (40.68 MHz) at a reduced pressure (0.01 Torr).
Book ChapterDOI
Possible Roles of Broad Energy Distribution in Ion Implantation and Pulsed Structure in Perturbed Angular Distribution Studies
TL;DR: In this article, the authors exploit the multiplicity, broad energy distribution, and the short time structure of laser-accelerated ions for ion implantation technology and perturbed angular distribution (PAD) studies, with certain advantages over the ions provided by conventional accelerators.
References
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TL;DR: A new era of complex thermoelectric materials is approaching because of modern synthesis and characterization techniques, particularly for nanoscale materials, and the strategies used to improve the thermopower and reduce the thermal conductivity are reviewed.
BookDOI
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TL;DR: In this article, Rowe et al. proposed a method for reducing the thermal conductivity of a thermoelectric generator by reducing the carrier concentration of the generator, which was shown to improve the generator's performance.
Journal ArticleDOI
Enhancement of Thermoelectric Efficiency in PbTe by Distortion of the Electronic Density of States
Joseph P. Heremans,Vladimir Jovovic,Eric S. Toberer,Ali Saramat,Ken Kurosaki,Anek Charoenphakdee,Shinsuke Yamanaka,G. Jeffrey Snyder +7 more
TL;DR: A successful implementation through the use of the thallium impurity levels in lead telluride (PbTe) is reported, which results in a doubling of zT in p-type PbTe to above 1.5 at 773 kelvin.
Journal ArticleDOI
Convergence of electronic bands for high performance bulk thermoelectrics
TL;DR: It is demonstrated that it is possible to direct the convergence of many valleys in a bulk material by tuning the doping and composition, leading to an extraordinary zT value of 1.8 at about 850 kelvin.
Journal ArticleDOI
Thermoelectric materials, phenomena, and applications : A bird's eye view
TL;DR: An overview of thermoelectric (TE) phenomena and materials is provided in this issue of MRS Bulletin this article, where several of the current applications and key parameters are defined and discussed.