Thermoelectric Properties of Bi2Te3 and Bi0.5Sb1.5Te3 Thin Films and Their Energy Generating Performance
DC Field | Value | Language |
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dc.contributor.author | Park, No-Won | - |
dc.contributor.author | Park, Tae-Hyun | - |
dc.contributor.author | Kang, So-Hyeon | - |
dc.contributor.author | Ahn, Jay-Young | - |
dc.contributor.author | Yoon, Soon-Gil | - |
dc.contributor.author | Lee, Sang-Kwon | - |
dc.date.available | 2019-03-08T12:39:53Z | - |
dc.date.issued | 2016-08 | - |
dc.identifier.issn | 1947-2935 | - |
dc.identifier.issn | 1947-2943 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/6720 | - |
dc.description.abstract | We report on the influence of post-annealing on the crystalline structures, chemical position, and thermoelectric (TE) properties-including Seebeck coefficient, electric resistivity, power factor, and thermal conductivity-of both n-type Bi2Te3 (n-BT) and p-type Bi0.5Sb2Te3 (p-BST) thin films with a thickness of 300 nm, which are prepared by radio-frequency (RF) sputtering. For this study, the samples are annealed at temperatures of 20, 100, 200, and 300 degrees C under Ar atmosphere. From the measured TE properties, both n-BT and p-BST thin films annealed at 200 degrees C exhibit the highest TE performance. The samples reveal resistivities of 2.2x10(-4) Omega cm and 7.7x10(-3) Omega cm, Seebeck coefficients of -45 mu V/K and 190 mu V/K, and power factors of 9.6x10(-4) W/K-2 m and 4.7x10(-4) W/K-2 m for 200 degrees C annealed n-BT and p-BST thin films, respectively. In addition, we obtain that the average thermal conductivities of the annealed n-BT and p-BST thin films to be similar to 0.2-0.6 W/(m . K) and similar to 0.3-0.5 W/(m . K) at room temperature using the 3-omega method, respectively, indicating a slight increase with increasing annealing temperatures. Furthermore, the TE performance of a thin-film-based TE energy generator consisting of n-BT and p-BST thin film legs on Si substrate is demonstrated. The output voltage of the TE generator is determined to be similar to 4.3 mV from a temperature difference of 50 K. | - |
dc.format.extent | 6 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | AMER SCIENTIFIC PUBLISHERS | - |
dc.title | Thermoelectric Properties of Bi2Te3 and Bi0.5Sb1.5Te3 Thin Films and Their Energy Generating Performance | - |
dc.type | Article | - |
dc.identifier.doi | 10.1166/sam.2016.2995 | - |
dc.identifier.bibliographicCitation | SCIENCE OF ADVANCED MATERIALS, v.8, no.8, pp 1530 - 1535 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000386491900004 | - |
dc.identifier.scopusid | 2-s2.0-84994713321 | - |
dc.citation.endPage | 1535 | - |
dc.citation.number | 8 | - |
dc.citation.startPage | 1530 | - |
dc.citation.title | SCIENCE OF ADVANCED MATERIALS | - |
dc.citation.volume | 8 | - |
dc.type.docType | Article | - |
dc.publisher.location | 미국 | - |
dc.subject.keywordAuthor | Bismuth Antimony Telluride | - |
dc.subject.keywordAuthor | Bismuth Telluride | - |
dc.subject.keywordAuthor | Thermal Conductivity | - |
dc.subject.keywordAuthor | 2-D Thin Films | - |
dc.subject.keywordAuthor | 3-omega Technique | - |
dc.subject.keywordAuthor | Energy Generator | - |
dc.subject.keywordPlus | DEPENDENT THERMAL-CONDUCTIVITY | - |
dc.subject.keywordPlus | N-TYPE BI2TE3 | - |
dc.subject.keywordPlus | SILICON NANOWIRES | - |
dc.subject.keywordPlus | POWER-GENERATION | - |
dc.subject.keywordPlus | GRAIN-SIZE | - |
dc.subject.keywordPlus | TRANSPORT | - |
dc.subject.keywordPlus | MERIT | - |
dc.subject.keywordPlus | DEVICES | - |
dc.subject.keywordPlus | SB2TE3 | - |
dc.subject.keywordPlus | FIGURE | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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