Separation of heat flow and carrier flow in the thermoelectric material with a paralell connection

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630298
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Composite materials/Surface and interface engineering
• Research Institution: National Institute for Materials Science
• Principal Investigator: SHINOHARA Yoshikazu 独立行政法人物質・材料研究機構, 電池材料ユニット, グループリーダー (70343853)
• Co-Investigator(Kenkyū-buntansha): ISODA Yukihiro 独立行政法人物質・材料研究機構, 電池材料ユニット, グループリーダー (80354140)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: Si-Ge系熱電材料 / 接合体 / 熱流 / 電荷流

Outline of Final Research Achievements

The objective of this study is to evaluate thermoelectric properties of the joined thermoelectric materials in the joined surface direction to verify a possibility of separation of the heat flow and carrier flow in the thermoelectric material. As experimental results, the separation was not directly observed at the measurement of both temperature and potential distributions in the joined materials. It was, however, suggested that there is a high possibility of separation of the heat flow and carrier flow in the thermoelectric material, from the results that 1) it was impossible to apply the simple rule of mixture to the joined thermoelectric materials with a parallel connection, and 2) the thermoelectric properties of the joined thermoelectric materials showed a size effect.

Free Research Field

熱電材料、傾斜機能材料、エコマテリアル