Development of liquid-phase growth using a sliding boat for preparation of Bi2Te3-based thermoelectric materials

• Project/Area Number: 24560884
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Material processing/treatments
• Research Institution: Shimane University
• Principal Investigator: KITAGAWA Hiroyuki 島根大学, 総合理工学研究科(研究院), 准教授 (00325044)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 熱電変換材料 / 結晶配向 / キャリア濃度 / ゼーベック係数 / 電気抵抗率 / 電気伝導率

Outline of Final Research Achievements

A liquid-phase growth process using a graphite sliding boat was applied for synthesis of p-type Bi_<0.5>Sb_<1.5>Te_<3> and Cu-doped n-type Bi_<2>Te_<2.85>Se_<0.15> thermoelectric materials. Thick sheets and bars of 1 mm and 2 mm in thickness having preferable crystal orientation for thermoelectric conversion were successfully prepared by the process. By control of carrier concentration, the large power factor of approximately 4 mW/K2m was obtained near 300 K for both p- and n-type materials with good reproducibility.

Research Products

• [Journal Article] Thermoelectric Properties of Cu-Doped n-Type Bi2Te2.85Se0.15 Prepared by Liquid Phase Growth Using a Sliding Boat (2015)
  • Author(s): Hiroyuki Kitagawa, Tsukasa Matsuura, Toshihito Kato, Kin-ya Kamata
  • Journal Title: Journal of Electronic Materials Volume: 未定 Issue: 6 Pages: 1870-1875
  • DOI: 10.1007/s11664-014-3578-3
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Thermoelectric Properties of Bi_0.5Sb_1.5Te_3 Prepared by Liquid Phase Growth using Sliding-Boat (2013)
  • Author(s): H.Kitagawa, T. Takino, T. Tsukutani, T. Kato, M. Nanba, K.Kamata
  • Journal Title: Journal of Electronic Materials Volume: in press Issue: 7 Pages: 2043-2047
  • DOI: 10.1007/s11664-013-2518-y
  • Peer Reviewed
• [Presentation] Thermoelectric properties of Cu-doped n-type Bi2Te2.85Se0.15 prepared by liquid phase growth using a sliding boat (2014)
  • Author(s): Hiroyuki Kitagawa, Tsukasa Matsuura, Toshihito Kato, Kin-ya Kamata
  • Organizer: The 33rd International Conference on Thermoelectrics
  • Place of Presentation: Renaissance Nashville Hotel, Nashville, Tennessee, USA
  • Year and Date: 2014-07-06 – 2014-07-10
• [Presentation] Thermoelectric properties of n-type Bi2Te2.85Se0.15 prepared by liquid phase growth using a sliding boat (2013)
  • Author(s): Tsukasa Matsuura, Teppei Takino, Kohei Mototsune, Hiroyuki Kitagawa, Toshihito Kato, Kin-ya Kamata
  • Organizer: The 32nd International Conference on Thermoelectrics
  • Place of Presentation: 神戸国際会議場（神戸）
• [Presentation] スライドボートを用いた液相成長によるBi2Te2.85Se0.15の作製と熱電特性 (2013)
  • Author(s): 2.松浦 司，北川 裕之, 加藤 寿仁, 鎌田 勤也
  • Organizer: 日本金属学会 2013年 (第153回) 秋期大会
  • Place of Presentation: 金沢大学（金沢）
• [Presentation] スライドボートを用いた液相成長によるPb, Sn添加Bi0.5Sb1.5Te3 の作製と熱電特性 (2013)
  • Author(s): 3.松浦 司，本常 幸平, 北川裕之
  • Organizer: 日本鉄鋼協会・日本金属学会 中国四国支部 鉄鋼第56回･金属第53回 合同支部講演大会
  • Place of Presentation: 愛媛大学（松山）
• [Presentation] Thermoelectric Properties of Bi_<0.5>Sb_<1.5>Te_3 Prepared by Liquid Phase Growth using Sliding-Boat (2012)
  • Author(s): H.Kitagawa, T. Takino, T. Tsukutani, T. Kato, M. Nanba, K.Kamata
  • Organizer: The 31st International Conference on Thermoelectrics
  • Place of Presentation: Aalborg, Denmark
• [Presentation] スライドボートを用いた液相成長によるBi_<0.5>Sb_<1.5>Te_3の作製とキャリア濃度制御 (2012)
  • Author(s): 北川 裕之, 滝野 哲平, 加藤 寿仁, 難波 政雄, 鎌田 勤也
  • Organizer: 日本金属学会 2012年 (第151回) 秋期大会
  • Place of Presentation: 愛媛大学（松山市）