DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zhang, Yuqiao | ko |
dc.contributor.author | Cho, Hai Jun | ko |
dc.contributor.author | Sugo, Kenyu | ko |
dc.contributor.author | Mikami, Masashi | ko |
dc.contributor.author | Woo, Sungmin | ko |
dc.contributor.author | Jung, Myung-Chul | ko |
dc.contributor.author | Zhuang, Yao-Hua | ko |
dc.contributor.author | Bin Feng | ko |
dc.contributor.author | Sheu, Yu-Miin | ko |
dc.contributor.author | Shin, Woosuck | ko |
dc.contributor.author | Choi, Woo Seok | ko |
dc.contributor.author | Han, Myung Joon | ko |
dc.contributor.author | Ikuhara, Yuichi | ko |
dc.contributor.author | Ohta, Hiromichi | ko |
dc.date.accessioned | 2021-06-22T01:30:20Z | - |
dc.date.available | 2021-06-22T01:30:20Z | - |
dc.date.created | 2021-05-17 | - |
dc.date.created | 2021-05-17 | - |
dc.date.issued | 2021-08 | - |
dc.identifier.citation | JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.104, no.8, pp.4075 - 4085 | - |
dc.identifier.issn | 0002-7820 | - |
dc.identifier.uri | http://hdl.handle.net/10203/286072 | - |
dc.description.abstract | Electron-doped SrTiO3 has been attracting attention as oxide thermoelectric materials, which can convert wasted heat into electricity. The power factor of the electron-doped SrTiO3, including SrTiO3-LaTiO3 and SrTiO3-SrNbO3 solid solutions, has been clarified. However, their thermal conductivity (kappa) has not been clearly identified thus far. Only a high kappa (>12 W m(-1) K-1) has been assumed from the electron contribution based on Wiedemann-Franz law. Here, we show that the kappa of the electron-doped SrTiO3 is lower than the assumed kappa, and its highest ZT exceeded 0.1 at room temperature. The kappa slightly decreased with the carrier concentration (n) when n is below 4 x 10(21) cm(-3). In the case of SrTiO3-SrNbO3 solid solutions, an upturn in kappa was observed when n exceeds 4 x 10(21) cm(-3) due to the contribution of conduction electron to the kappa. On the other hand, kappa decreased in the case of SrTiO3-LaTiO3 solid solutions probably due to the lattice distortion, which scatters both electrons and phonons. The highest ZT was 0.11 around n = 1 x 10(21) cm(-3). These findings would be useful for the future design of electron-doped SrTiO3-based thermoelectric materials. | - |
dc.language | English | - |
dc.publisher | WILEY | - |
dc.title | Low thermal conductivity of SrTiO3-LaTiO3 and SrTiO3-SrNbO3 thermoelectric oxide solid solutions | - |
dc.type | Article | - |
dc.identifier.wosid | 000643143800001 | - |
dc.identifier.scopusid | 2-s2.0-85104717236 | - |
dc.type.rims | ART | - |
dc.citation.volume | 104 | - |
dc.citation.issue | 8 | - |
dc.citation.beginningpage | 4075 | - |
dc.citation.endingpage | 4085 | - |
dc.citation.publicationname | JOURNAL OF THE AMERICAN CERAMIC SOCIETY | - |
dc.identifier.doi | 10.1111/jace.17797 | - |
dc.contributor.localauthor | Han, Myung Joon | - |
dc.contributor.nonIdAuthor | Zhang, Yuqiao | - |
dc.contributor.nonIdAuthor | Cho, Hai Jun | - |
dc.contributor.nonIdAuthor | Sugo, Kenyu | - |
dc.contributor.nonIdAuthor | Mikami, Masashi | - |
dc.contributor.nonIdAuthor | Woo, Sungmin | - |
dc.contributor.nonIdAuthor | Jung, Myung-Chul | - |
dc.contributor.nonIdAuthor | Zhuang, Yao-Hua | - |
dc.contributor.nonIdAuthor | Bin Feng | - |
dc.contributor.nonIdAuthor | Sheu, Yu-Miin | - |
dc.contributor.nonIdAuthor | Shin, Woosuck | - |
dc.contributor.nonIdAuthor | Choi, Woo Seok | - |
dc.contributor.nonIdAuthor | Ikuhara, Yuichi | - |
dc.contributor.nonIdAuthor | Ohta, Hiromichi | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | lattice distortion | - |
dc.subject.keywordAuthor | polaron | - |
dc.subject.keywordAuthor | strontium titanate | - |
dc.subject.keywordAuthor | thermal conductivity | - |
dc.subject.keywordAuthor | thermoelectrics | - |
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