Improvement in the thermoelectric performance of highly reproducible n-type (Bi,Sb)2Se3alloys by Cl-doping
DC Field | Value | Language |
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dc.contributor.author | Nasir, N. | - |
dc.contributor.author | Lee, K.H. | - |
dc.contributor.author | Kim, S.-I. | - |
dc.contributor.author | Kim, H.-S. | - |
dc.contributor.author | Lim, J.-H. | - |
dc.contributor.author | Fu, L. | - |
dc.contributor.author | Kim, S.W. | - |
dc.date.available | 2020-07-17T00:35:23Z | - |
dc.date.created | 2020-07-15 | - |
dc.date.issued | 2020-06 | - |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/66276 | - |
dc.description.abstract | (Bi,Sb)2Se3 alloys are promising alternatives to commercial n-type Bi2(Te,Se)3 ingots for low-mid temperature thermoelectric power generation due to their high thermoelectric conversion efficiency at elevated temperatures. Herein, we report the enhanced high-temperature thermoelectric performance of the polycrystalline Cl-doped Bi2-xSbxSe3 (x = 0.8, 1.0) bulks and their sustainable thermal stability. Significant role of Cl substitution, characterized to enhance the power factor and reduce the thermal conductivity synergetically, is clearly elucidated. Cl-doping at Se-site of both Bi1.2Sb0.8Se3 and BiSbSe3 results in a high power factor by carrier generation and Hall mobility improvement while maintaining converged electronic band valleys. Furthermore, point defect phonon scattering originated from mass fluctuations formed at Cl-substituted Se-sites reduces the lattice thermal conductivity. Most importantly, spark plasma sintered Cl-doped Bi2-xSbxSe3 bulks are thermally stable up to 700 K, and show a reproducible maximum thermoelectric figure of merit, zT, of 0.68 at 700 K. © The Royal Society of Chemistry. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | Royal Society of Chemistry | - |
dc.relation.isPartOf | RSC Advances | - |
dc.title | Improvement in the thermoelectric performance of highly reproducible n-type (Bi,Sb)2Se3alloys by Cl-doping | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000544898700056 | - |
dc.identifier.doi | 10.1039/d0ra04065g | - |
dc.identifier.bibliographicCitation | RSC Advances, v.10, no.41, pp.24663 - 24668 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.scopusid | 2-s2.0-85087543299 | - |
dc.citation.endPage | 24668 | - |
dc.citation.startPage | 24663 | - |
dc.citation.title | RSC Advances | - |
dc.citation.volume | 10 | - |
dc.citation.number | 41 | - |
dc.contributor.affiliatedAuthor | Lim, J.-H. | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | Chlorine compounds | - |
dc.subject.keywordPlus | Electric power factor | - |
dc.subject.keywordPlus | Hall mobility | - |
dc.subject.keywordPlus | Hole mobility | - |
dc.subject.keywordPlus | Metal castings | - |
dc.subject.keywordPlus | Thermodynamic stability | - |
dc.subject.keywordPlus | Thermoelectric power | - |
dc.subject.keywordPlus | Thermoelectricity | - |
dc.subject.keywordPlus | Carrier generation | - |
dc.subject.keywordPlus | Elevated temperature | - |
dc.subject.keywordPlus | High power factor | - |
dc.subject.keywordPlus | Lattice thermal conductivity | - |
dc.subject.keywordPlus | Thermally stable | - |
dc.subject.keywordPlus | Thermoelectric conversion efficiency | - |
dc.subject.keywordPlus | Thermoelectric figure of merit | - |
dc.subject.keywordPlus | Thermoelectric performance | - |
dc.subject.keywordPlus | Thermal conductivity | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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