Preparation and Thermoelectric Property of Highly Oriented Al-Doped ZnO Ceramics by a High Magnetic Field
Preparation and Thermoelectric Property of Highly Oriented Al-Doped ZnO Ceramics by a High Magnetic Field
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DOI：
10.1143/jjap.45.l1212
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发表时间：
2006-11
影响因子：
1.5
通讯作者：
H. Kaga;Y. Kinemuchi;S. Tanaka;A. Makiya;Z. Kato;K. Uematsu;K. Watari
中科院分区：
文献类型：
--
作者：
H. Kaga;Y. Kinemuchi;S. Tanaka;A. Makiya;Z. Kato;K. Uematsu;K. Watari
采用强磁场法制备了高度取向的Al掺杂ZnO陶瓷，并研究了其各向异性热电性能。c轴取向的样品沿着ab-平面显示出更高的电导率相比，a轴和非取向的样品作为高电子迁移率的结果。另一方面，取向和非取向样品之间的Seebeck系数和热导率的差异很小。因此，c轴取向的试样的无量纲品质因数相比于其他试样增加了约30%。
Highly oriented Al-doped ZnO ceramics were prepared by a high magnetic field method and their anisotropic thermoelectric properties were examined. The c-axis oriented specimen along the ab-plane showed a higher electrical conductivity compared to the a-axis and non-oriented specimens as a result of high electron mobility. On the other hand, the differences in the Seebeck coefficients and thermal conductivities between oriented and non-oriented specimens were a small. Consequently, the dimensionless figure of merit of the c-axis oriented specimen increased by about 30% compared to the other specimens.