Anisotropic Behavior of the Temperature-Dependent Thermal Conductivity in p-Type Bismuth Antimony Telluride (p-Bi0.5Sb1.5Te3) Thin Films
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Won-Yong | - |
dc.contributor.author | Park, No-Won | - |
dc.contributor.author | Ahn, Jay-Young | - |
dc.contributor.author | Umar, Ahmad | - |
dc.contributor.author | Lee, Sang-Kwon | - |
dc.date.available | 2019-03-08T07:57:03Z | - |
dc.date.issued | 2017-10 | - |
dc.identifier.issn | 1555-130X | - |
dc.identifier.issn | 1555-1318 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/3910 | - |
dc.description.abstract | Bismuth antimony telluride (Bi0.5Sb1.5Te3, BST) is the most widely used p-type thermoelectric (TE) material operating near room temperature. Recently, several research groups reported the enhancement of the dimensionless figure of merit, ZT, of Bi0.5Sb1.5Te3 bulk materials, as a result of using various solidification techniques. It is well known that the ZT value can be enhanced in low-dimensional systems, more so than in bulk material, owing to the enhanced phonon scattering present in such systems. Thus, systematic studies should be carried out on a number of TE materials in order to further enhance their ZT value, by reducing their thermal conductivity. In this study, both the in-plane and cross-plane thermal conductivities of p-type BST thin films in the temperature range 100-450 K were investigated using the four-point-probe 3 omega technique. In this temperature range, the average in-plane and cross-plane thermal conductivities of the films were determined to be approximately, similar to 0.60-0.77 W m(-1) K-1, and similar to 0.4-0.53 W m(-1) K-1, respectively. Furthermore, our experimental results were analyzed using modified Sondheimer and Callaway models in order to calculate the anisotropic ratio, and temperature dependence of the lattice and electronic thermal conductivities for the p-BST thin films in both the in-plane and cross-plane directions. | - |
dc.format.extent | 6 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | AMER SCIENTIFIC PUBLISHERS | - |
dc.title | Anisotropic Behavior of the Temperature-Dependent Thermal Conductivity in p-Type Bismuth Antimony Telluride (p-Bi0.5Sb1.5Te3) Thin Films | - |
dc.type | Article | - |
dc.identifier.doi | 10.1166/jno.2017.2108 | - |
dc.identifier.bibliographicCitation | JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS, v.12, no.10, pp 1123 - 1128 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000419957000014 | - |
dc.identifier.scopusid | 2-s2.0-85041128769 | - |
dc.citation.endPage | 1128 | - |
dc.citation.number | 10 | - |
dc.citation.startPage | 1123 | - |
dc.citation.title | JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS | - |
dc.citation.volume | 12 | - |
dc.type.docType | Article | - |
dc.publisher.location | 미국 | - |
dc.subject.keywordAuthor | Anisotropic Thermal Conductivity | - |
dc.subject.keywordAuthor | Bismuth Antimony Telluride (Bi0.5Sb1.5Te3) | - |
dc.subject.keywordAuthor | 3 omega Technique | - |
dc.subject.keywordAuthor | Callaway Model | - |
dc.subject.keywordAuthor | Sondheimer Model | - |
dc.subject.keywordPlus | HIGH-THERMOELECTRIC PERFORMANCE | - |
dc.subject.keywordPlus | THICKNESS | - |
dc.subject.keywordPlus | ROUTE | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
84, Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea (06974)02-820-6194
COPYRIGHT 2019 Chung-Ang University All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.