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A novel chemical process of Bi2Te2.7Se0.3 nanocompound for effective adjustment in transport properties resulting in remarkable n-type thermoelectric performance

Title
A novel chemical process of Bi2Te2.7Se0.3 nanocompound for effective adjustment in transport properties resulting in remarkable n-type thermoelectric performance
Author(s)
Kim, ChamKim, Chang EunBaek, Ju YoungKim, Dong HwanKim, Jong TaeAhn, Ji HyeonLopez, David HumbertoKim, Hoyoung
Issued Date
2016-07
Citation
Scripta Materialia, v.119, pp.13 - 16
Type
Article
Author Keywords
Thermoelectric materialsNanostructureBismuth tellurideThermal conductivityElectrical conductivity
Keywords
BI2TE3-XSEX NANOPLATELET COMPOSITESBISMUTH TELLURIDEChemical ProcessChemical Reaction ProcessChemical ReactionsElectric ConductivityElectrical ConductivityHIGH-FIGUREIndicators (chemical)MERITNanostructureNanostructuresSynergistic EffectThermal ConductivityThermo-Electric MaterialsThermoelectric MaterialsThermoelectric PerformanceThermoelectric Transport PropertiesThermoelectricityTRANSPORT PROPERTIESTransportation Routes
ISSN
1359-6462
Abstract
Chemical reaction processes for thermoelectric nanomaterials have received a lot of attention because of subsequent small and uniform nanostructures, causing a remarkable reduction in thermal conductivity; however, they typically showed low electrical properties possibly due to contaminations by chemicals resulting in low ZT. We devised a new chemical process for synthesizing an n-type Bi2Te2.7Se0.3 nanocompound without the chemicals causing potential contaminations. The product exhibited a predominant electrical conductivity while retaining the advantage of chemical reaction routes; thus, synergistic effect of the thermoelectric transport properties was greatly induced, resulting in the highest ZT among n-type Bi2Te3 materials in bulk phase. © 2016 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/5094
DOI
10.1016/j.scriptamat.2016.03.010
Publisher
Elsevier Ltd
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Appears in Collections:
Division of Nanotechnology 1. Journal Articles

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