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2014 Fiscal Year Final Research Report

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

Research Project

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Project/Area Number 24560884
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Material processing/treatments
Research InstitutionShimane 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
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
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.

Free Research Field

材料物性

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Published: 2016-06-03  

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