Proceedings ArticleDOI
Structural and resistive property study of Bi2Te3+x% graphite nanocomposites
P. Singha,Subarna Das,S. Bandyopadhyay,V. A. Kulbashinskii,A. K. Deb,Aritra Banerjee +5 more
- Vol. 1832, Iss: 1, pp 120029
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TLDR
In this paper, the X-Ray Diffraction (XRD) technique was used for structural characterizations of graphite nanocomposite samples at room temperature using XRD data, which showed that all the graphite samples are semiconducting in nature.Abstract:
Bi2Te3+x% Graphite nanocomposite samples were synthesized by ball milling method Structural characterizations are carried out at room temperature using X-Ray Diffraction (XRD) technique Lattice strain, as calculated from the XRD data, increases with increasing graphite content Thermal variation of resistivity data, measured down to 10K, shows that all the nanocomposite samples are semiconducting in nature Activation energy of the samples estimated from the resistivity data, increases with increasing graphite concentrationread more
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Journal ArticleDOI
High-Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys
Bed Poudel,Qing Hao,Yi Ma,Yucheng Lan,Austin J. Minnich,Bo Yu,Xiao Yan,Dezhi Wang,Andrew Muto,Daryoosh Vashaee,Xiaoyuan Chen,Jun-Ming Liu,Mildred S. Dresselhaus,Gang Chen,Zhifeng Ren +14 more
TL;DR: Electrical transport measurements, coupled with microstructure studies and modeling, show that the ZT improvement is the result of low thermal conductivity caused by the increased phonon scattering by grain boundaries and defects, which makes these materials useful for cooling and power generation.
Journal Article
High Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys.
Bed Poudel,Qing Hao,Yi Ma,Austin J. Minnich,Andrew Muto,Yucheng Lan,Bo Yu,Xiao Yan,Dezhi Wang,Daryoosh Vashaee,X.Y. Chen,Dresselhaus,Gang Chen,Zhifeng Ren +13 more
Journal ArticleDOI
Band structure of bismuth telluride, bismuth selenide and their respective alloys
D.L. Greenaway,G. Harbeke +1 more
TL;DR: The dominant features of the band structure have been analyzed by studying the fundamental reflectivity over the energy range 0.1-12 eV and the absorption over the range 0,1-1.5 eV as mentioned in this paper.
Journal ArticleDOI
The influence of CNTs on the thermoelectric properties of a CNT/Bi2Te3 composite
Kyung Tae Kim,Si-Young Choi,Eun Hye Shin,Kyong Seok Moon,Hye Young Koo,Gil-Geun Lee,Gook Hyun Ha +6 more
TL;DR: In this article, a CNT/Bi 2 Te 3 composites were prepared from composite powders in which CNTs were implanted in the Bi 2 Te3 matrix powders by a novel chemical route.
Journal ArticleDOI
Nanoscale thermoelectric properties of Bi2Te3 - Graphene nanocomposites: Conducting atomic force, scanning thermal and kelvin probe microscopy studies
TL;DR: In this paper, the effect of the presence of monolayer graphene (G) on the nanoscale electrical and thermal conductivities of Bi 2 Te 3 has been investigated.