Effect of Single Crystallization on Thermoelectric Performance Improvement of Ba8CuxSi46−x Clathrate

Zilong Zhang, Chiho Inoue, Masahide Yasuda, Yuichiro Magami, Makoto Arita, Shinji Munetoh

    研究成果: Contribution to journalArticle査読

    抄録

    The thermoelectric properties of single-crystalline and polycrystalline n-type Ba8CuxSi46−x type I clathrate were investigated and compared. Single-crystalline Ba8CuxSi46−x clathrate was synthesized by the Czochralski (CZ) method with a Cu content gradient, while spark plasma sintering (SPS) was used for the reorganization of polycrystalline materials. The same Cu content resulted in almost the same Seebeck coefficient in both single-crystalline and polycrystalline crystals, while the power factor (PF = S2/ ρ) of single-crystalline clathrate is twice that of polycrystalline clathrate. Thus, single crystallization is effective for the synthesis of high-efficiency thermoelectric materials in a type I Ba8CuxSi46−x clathrate ternary system.

    本文言語英語
    ページ(範囲)1146-1152
    ページ数7
    ジャーナルJournal of Electronic Materials
    50
    3
    DOI
    出版ステータス出版済み - 3 2021

    All Science Journal Classification (ASJC) codes

    • 電子材料、光学材料、および磁性材料
    • 凝縮系物理学
    • 電子工学および電気工学
    • 材料化学

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