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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
Authors
Kim, ChamKim, Chang EunBaek, Ju YoungKim, Dong HwanKim, Jong TaeAhn, Ji HyeonLopez, David HumbertoKim, Hoyoung
DGIST Authors
Kim, ChamKim, Dong HwanKim, Hoyoung
Issue Date
2016-07-01
Citation
Scripta Materialia, 119, 13-16
Type
Article
Article Type
Article
Keywords
Bismuth TellurideChemical ProcessChemical Reaction ProcessChemical ReactionsElectric ConductivityElectrical ConductivityIndicators (Chemical)Nano-StructuresNanostructureSynergistic EffectThermal ConductivityThermo-Electric MaterialsThermo-Electric PerformanceThermo-Electric Transport PropertiesThermo-ElectricityTransport 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
Related Researcher
Files:
There are no files associated with this item.
Collection:
Magnet-Controlled Materials Research Group1. Journal Articles


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