Thermoelectric properties of dense Sb-doped SnO2 ceramics
Thermoelectric properties of dense Sb-doped SnO2 ceramics
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DOI：
10.1016/j.jallcom.2016.09.062
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发表时间：
2017-01
影响因子：
6.2
通讯作者：
K. Rubenis;S. Populoh;P. Thiel;Songhak Yoon;U. Müller;J. Locs
中科院分区：
文献类型：
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作者：
K. Rubenis;S. Populoh;P. Thiel;Songhak Yoon;U. Müller;J. Locs
本文研究了火花等离子体烧结后空气退火Sn1-xSbxO2（x = 0,0.01, 0.03, 0.05）陶瓷样品的热电性能。结果表明，Sb的加入对SnO2的密度、微观结构和热电性能有较大影响。sn1 - xsbxo2样品中Sb含量从x = 0.01增加到0.05，晶粒尺寸减小，组织更加均匀。Sb掺杂样品的导热系数和Seebeck系数随Sb浓度的增加而减小，电导率在掺杂浓度为x = 0.03时最大，在掺杂浓度为x = 0.05时减小。在1073 K时，sn0.99 sb0.010 o2样品的热电优值ZT≈0.06最高。
In the present study thermoelectric properties of spark plasma sintered and subsequently air-annealed Sn1-xSbxO2(x = 0, 0.01, 0.03, 0.05) ceramic samples were characterized. It was observed that addition of Sb greatly affects density, microstructure and thermoelectric properties of SnO2. Grain size decreases and the microstructure becomes more homogeneous with increasing Sb content in the Sn1-xSbxO2samples from x = 0.01 to 0.05. The thermal conductivity and Seebeck coefficient of the Sb doped samples decreases with an increase in Sb concentration, while electrical conductivity increases up to a maximum at Sb doping level of x = 0.03 and then decreases at x = 0.05. The highest thermoelectric figure of merit of ZT ≈ 0.06 at 1073 K was exhibited by the sample of composition Sn0.99Sb0.01O2.