Synergetic effect of grain size reduction on electronic and thermal transport properties by selectively-suppressed minority carrier mobility and enhanced boundary scattering in Bi0.5Sb1.5Te3 alloys
DC Field | Value | Language |
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dc.contributor.author | Lee, Kyu Hyoung | - |
dc.contributor.author | Shin, Weon Ho | - |
dc.contributor.author | Kim, Hyun-Sik | - |
dc.contributor.author | Lee, Kimoon | - |
dc.contributor.author | Roh, Jong Wook | - |
dc.contributor.author | Yoo, Joonyeon | - |
dc.contributor.author | Kim, Ji-il | - |
dc.contributor.author | Kim, Sung Wng | - |
dc.contributor.author | Kim, Sang-il | - |
dc.date.available | 2020-07-10T04:02:02Z | - |
dc.date.created | 2020-07-06 | - |
dc.date.issued | 2019-02 | - |
dc.identifier.issn | 1359-6462 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/1983 | - |
dc.description.abstract | Controlling electronic and thermal transport properties simultaneously is an ultimate strategy to accomplish high-performance thermoelectrics. Here, our analysis on carrier transport of a nanograined p-type Bi0.5Sb1.5Te3 thermoelectric alloy clearly reveals that reducing grain size greatly suppresses bipolar conduction by selective suppression of minority carrier (electron) mobility, resulting in both the power factor enhancement and bipolar thermal conductivity reduction. Furthermore, it is shown how reducing grain size affects decreasing lattice thermal conductivity in respect to grain size and phonon wavelength. Therefore, minimizing grain size can enhance thermoelectric performance of Bi0.5Sb1.5Te3 alloy by controlling both electronic and thermal transport properties synergetically. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Synergetic effect of grain size reduction on electronic and thermal transport properties by selectively-suppressed minority carrier mobility and enhanced boundary scattering in Bi0.5Sb1.5Te3 alloys | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Hyun-Sik | - |
dc.identifier.doi | 10.1016/j.scriptamat.2018.09.038 | - |
dc.identifier.scopusid | 2-s2.0-85053848543 | - |
dc.identifier.wosid | 000449311000004 | - |
dc.identifier.bibliographicCitation | SCRIPTA MATERIALIA, v.160, pp.15 - 19 | - |
dc.relation.isPartOf | SCRIPTA MATERIALIA | - |
dc.citation.title | SCRIPTA MATERIALIA | - |
dc.citation.volume | 160 | - |
dc.citation.startPage | 15 | - |
dc.citation.endPage | 19 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.subject.keywordPlus | TEMPERATURES | - |
dc.subject.keywordAuthor | Thermoelectrics | - |
dc.subject.keywordAuthor | Nanograin | - |
dc.subject.keywordAuthor | Bi0.5Sb1.5Te3 | - |
dc.subject.keywordAuthor | Bipolar conduction | - |
dc.subject.keywordAuthor | Minority carrier mobility | - |
dc.subject.keywordAuthor | Lattice thermal conductivity | - |
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