Journal ArticleDOI
Syntheses and thermoelectric properties of Bi2Te3/Sb2Te3 bulk nanocomposites with laminated nanostructure
TLDR
In this article, a simple route involving hydrothermal synthesis and hot pressing was used in order to prepare Bi2Te3∕SbTe3 bulk nanocomposites.Abstract:
Nanocomposites with constituent sizes of <50nm are considered as a promising approach to enhance the figure of merit of bulk thermoelectric materials. A simple route involving hydrothermal synthesis and hot pressing was used in this work to prepare Bi2Te3∕Sb2Te3 bulk nanocomposites. It is shown that the composites have a laminated structure composed of Bi2Te3 and Sb2Te3 nanolayers with the thickness varying alternately between 5 and 50nm. The transport measurements indicate that the nanoscale laminated structure improves the thermoelectric performance with the maximal dimensionless figure of merit of 1.47 for the nanocomposite hot pressed from Bi2Te3 and Sb2Te3 nanopowders.read more
Citations
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Journal ArticleDOI
Prospects of Nanoscience with Nanocrystals
Maksym V. Kovalenko,Liberato Manna,Liberato Manna,Andreu Cabot,Zeger Hens,Dmitri V. Talapin,Dmitri V. Talapin,Cherie R. Kagan,Victor I. Klimov,Andrey L. Rogach,Peter Reiss,Delia J. Milliron,Philippe Guyot-Sionnnest,Gerasimos Konstantatos,Wolfgang J. Parak,Taeghwan Hyeon,Brian A. Korgel,Christopher B. Murray,Wolfgang Heiss,Wolfgang Heiss +19 more
TL;DR: The state of the art in research on colloidal NCs is reviewed focusing on the most recent works published in the last 2 years, where semiconductor NCs hold unique promise for near- and mid-infrared technologies, where very few semiconductor materials are available.
Journal ArticleDOI
High-performance nanostructured thermoelectric materials
TL;DR: In this article, a review summarizes the progress that has been made in recent years in developing thermoelectric materials with a high dimensionless figure of merits (ZT) and the related fabrication processes for producing nanostuctured materials.
Journal ArticleDOI
Enhancement of Thermoelectric Figure-of-Merit by a Bulk Nanostructuring Approach
TL;DR: In this paper, the synthesis process and the relationship between the microstructures and the thermoelectric properties of the nanostructured bulk materials with an enhanced ZT value are reviewed.
Journal ArticleDOI
Nanostructured thermoelectric materials: current research and future challenge
TL;DR: The field of thermoelectrics has long been recognized as a potentially transformative power generation technology and the field is now growing steadily due to their ability to convert heat directly into electricity and to develop cost effective, pollution-free forms of energy conversion.
Journal ArticleDOI
Unique nanostructures and enhanced thermoelectric performance of melt-spun BiSbTe alloys
TL;DR: In this paper, a melt spinning technique followed by a quick spark plasma sintering procedure was used to fabricate high performance p-type Bi0.52Sb1.48Te3 bulk material with unique microstructures.
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
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
Thermal conductivity reduction and thermoelectric figure of merit increase by embedding nanoparticles in crystalline semiconductors.
Woochul Kim,Joshua M. O. Zide,Arthur C. Gossard,Dmitri O. Klenov,Susanne Stemmer,Ali Shakouri,Arun Majumdar,Arun Majumdar +7 more
TL;DR: Using In0.53Ga0.47As containing ErAs nanoparticles, thermal conductivity reduction is demonstrated by almost a factor of 2 below the alloy limit and a corresponding increase in the thermoelectric figure of merit is demonstrated.
Journal ArticleDOI
CsBi4Te6: A High-Performance Thermoelectric Material for Low-Temperature Applications
Duck Young Chung,Timothy P. Hogan,Paul Brazis,Melissa Rocci-Lane,Carl R. Kannewurf,Marina Bastea,Ctirad Uher,Mercouri G. Kanatzidis +7 more
TL;DR: The material CsBi(4)Te(6) has been synthesized and its properties have been studied, and at cryogenic temperatures, the thermoelectric properties appear to match or exceed those of Bi(2-x)Sb(x)Te (3-y)Se(y) alloys.
Journal ArticleDOI
Experimental study of the effect of quantum-well structures on the thermoelectric figure of merit
TL;DR: In this article, it has been shown theoretically that it may be possible to increase the thermoelectric figure of merit (Z$) of certain materials by preparing them in the form of two-dimensional quantum-well structures.