2017年10月
Enhancement of Thermoelectric Properties in Surface Nanostructures
JOURNAL OF ELECTRONIC MATERIALS
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- 巻
- 46
- 号
- 10
- 開始ページ
- 5593
- 終了ページ
- 5598
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/s11664-017-5635-1
- 出版者・発行元
- SPRINGER
The thermoelectric properties of TiN/MgO surface nanostructures have been determined using first-principles calculations based on the nonequilibrium Green's function (NEGF) method. Through structural modification of the surfaces at the atomistic level, we find that the metallic TiN thin-film layer becomes semiconducting with a small bandgap, which enhances the Seebeck coefficient, while the electrical conductivity remains high at room temperature. Hence, a much larger thermoelectric figure of merit is obtained compared with bulk. These findings indicate the possibility of designing thermoelectric devices with surface nanostructures.
- リンク情報
- ID情報
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- DOI : 10.1007/s11664-017-5635-1
- ISSN : 0361-5235
- eISSN : 1543-186X
- Web of Science ID : WOS:000408947000015