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Effect of grain size on thermoelectric properties of n-type nanocrystalline bismuth-telluride based thin films
http://hdl.handle.net/10228/1205
http://hdl.handle.net/10228/12057bbf2b7e-f6b4-426e-b054-66a508961d8f
| 名前 / ファイル | ライセンス | アクション |
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1.2990774.pdf (606.0 kB)
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| Item type | 学術雑誌論文 = Journal Article(1) | |||||||||||||
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| 公開日 | 2008-11-04 | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
| 資源タイプ | journal article | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Effect of grain size on thermoelectric properties of n-type nanocrystalline bismuth-telluride based thin films | |||||||||||||
| 言語 | en | |||||||||||||
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| 言語 | eng | |||||||||||||
| 著者 |
Takashiri, M
× Takashiri, M× 宮崎, 康次
WEKO
679
× Tanaka, S× Kurosaki, J× Nagai, D× 塚本, 寛 |
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | The effect of grain size on the thermoelectric properties of n-type nanocrystalline bismuth-telluridebased thin films is investigated. We prepare the nanocrystalline thin films with average grain sizesof 10, 27, and 60 nm by a flash-evaporation method followed by a hydrogen annealing process. Thethermoelectric properties, in terms of the thermal conductivity by a differential 3 method, theelectrical conductivity, and the Seebeck coefficient are measured at room temperature and used toevaluate the figure of merit. The minimum thermal conductivity is 0.61 W m−1 K−1 at the averagegrain size of 10 nm. We also estimate the lattice thermal conductivity of the nanocrystalline thinfilms and compare it with a simplified theory of phonon scattering on grain boundaries. Fornanosized grains, the lattice thermal conductivity of nanocrystalline thin films decreases rapidly forsmaller grains, corresponding to the theoretical calculation. The figure of merit is also decreased asthe grain size decreases, which is attributed to the increased number of defects at the grainboundaries. | |||||||||||||
| 言語 | en | |||||||||||||
| 書誌情報 |
en : Journal of Applied Physics 巻 104, 号 8, p. 084302-1-084302-6, 発行日 2008-10-15 |
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| 出版者 | American Institute of Physics | |||||||||||||
| 言語 | en | |||||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | https://doi.org/10.1063/1.2990774 | |||||||||||||
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| 識別子タイプ | URI | |||||||||||||
| 関連識別子 | https://cir.nii.ac.jp/crid/1050564288863207680 | |||||||||||||
| 日本十進分類法 | ||||||||||||||
| 主題Scheme | NDC | |||||||||||||
| 主題 | 431 | |||||||||||||
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| 収録物識別子タイプ | NCID | |||||||||||||
| 収録物識別子 | AA00693547 | |||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||
| 収録物識別子 | 1089-7550 | |||||||||||||
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| 収録物識別子タイプ | PISSN | |||||||||||||
| 収録物識別子 | 0021-8979 | |||||||||||||
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| 権利情報 | Copyright © 2008 American Institute of Physics | |||||||||||||
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| 出版タイプ | VoR | |||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||
| 査読の有無 | ||||||||||||||
| 値 | yes | |||||||||||||
| 研究者情報 | ||||||||||||||
| URL | https://hyokadb02.jimu.kyutech.ac.jp/html/546_ja.html | |||||||||||||
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| 値 | 80 | |||||||||||||
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| 値 | E1D738413AFE4FFF492574F70018EF9D | |||||||||||||
