Study on anisotropy and optimization of thermoelectric properties of thermoelectric materials by a Seebeck micro-probe method

塞贝克微探针法研究热电材料的各向异性及热电性能优化

• 批准号: 23560363
• 负责人: NAKAMOTO Go
• 金额: $ 3.24万
• 依托单位: Ehime University (2013)Japan Advanced Institute of Science and Technology (2011-2012)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560363/
• 关键词: 熱電変換材料; マイクロプローブ法; ゼーベック係数; マイクロプローブ; サーマルプローブ; 熱電材料

In this study, a two-dimensional Seebeck coefficient measurement system has been developed by a micro-probe method and two-dimensional distribution of Seebeck coefficient has evaluated for various thermoelectric materials. It is revealed that the anisotropic Seebeck coefficient reflecting the grain distribution in the zinc-antimonide system. In the bismuth-terullide system, it is found that the sign inversion of the Seebeck coefficient from p- to n-type occurs originating from the gradient of the excess Te content along the crystal growth direction. As a result, the evaluation method of microscopic thermoelectric properties has been established by using the Seebeck micro-probe method. It is expected that the Seebeck micro-probe method becomes one of the new and powerful ways for measurement of microscopic physical properties for various functional materials.

本研究利用微探针法研制了一套二维塞贝克系数测量系统，并对不同热电材料的二维塞贝克系数分布进行了研究。结果表明，各向异性的塞贝克系数反映了锌-锑体系中的颗粒分布。在铋-Terullide系统中，发现Seebeck系数从p型到n型的符号反转源于过剩Te含量沿晶体生长方向的梯度。在此基础上，建立了利用Seebeck微探针法进行微观热电性能评价的方法。Seebeck微探针法有望成为测量各种功能材料微观物理性质的新的、强有力的方法之一。

项目成果

コールドプローブ法を用いた走査型ゼーベック係数測定装置の開発

冷探针法扫描塞贝克系数测量装置的研制

• 发表时间: 2013
• 作者: 仲林裕司;中本剛
• 通讯作者: 中本剛

走査型ゼーベック係数測定装置に用いる微小サーマルプローブの検討

扫描式塞贝克系数测量装置用微型热探头的研究

• 发表时间: 2012
• 作者: 仲林裕司;中本剛
• 通讯作者: 中本剛

Preparation of the crack-free single phase (Zn_<1-x>Cd_x)_<13>Sb_<10> by a gradient freeze method and their structural and thermoelectric properties

梯度冷冻法制备无裂纹单相(Zn_<1-x>Cd_x)_<13>Sb_<10>及其结构和热电性能

• DOI: 10.1016/j.intermet.2011.11.021
• 发表时间: 2012
• 期刊: Intermetallics
• 影响因子: 4.4
• 作者: G. Nakamoto;Y. Tajima;M. Kurisu
• 通讯作者: M. Kurisu

Effects of chemical composition and crystal texture on local Seebeck coefficient for various thermoelectric materials investigated by the Seebeck micro-probe method

通过塞贝克微探针方法研究化学成分和晶体织构对各种热电材料局部塞贝克系数的影响

• 发表时间: 2013
• 作者: G. Nakamoto;Y. Nakabayashi
• 通讯作者: Y. Nakabayashi

走査型ゼーベック係数測定装置に用いる微小プローブの開発

扫描塞贝克系数测量装置用微探针的研制

• 发表时间: 2012
• 作者: 中本剛;仲林裕司
• 通讯作者: 仲林裕司