Enhanced thermoelectric performance in p-type BiSbTe bulk alloy with nanoinclusion of ZnAlO
Enhanced thermoelectric performance in p-type BiSbTe bulk alloy with nanoinclusion of ZnAlO
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ZnAlO 纳米夹杂物增强 p 型 BiSbTe 合金的热电性能
DOI：
10.1063/1.3541654
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发表时间：
2011-01-10
影响因子：
4
通讯作者：
Xu, Gaojie
中科院分区：
文献类型：
--
作者：
Zhang, Ting;Zhang, Qiushi;Xu, Gaojie
采用区熔法制备了p型BiSbTe/x wt % ZnAlO（x=0，0.25，0.5，0.75和1.0）复合材料。x=0.75的样品在370 K时的峰值热电优值（ZT）为1.33，比相同温度下的BiSbTe高出约34%，使这些复合材料在商业应用中更具吸引力。ZnAlO纳米粉体的引入显著提高了材料的电导率，同时降低了材料的晶格热导率。
p-type BiSbTe/x wt % ZnAlO (x=0, 0.25, 0.5, 0.75, and 1.0) composites were prepared by zone melting method. A peak thermoelectric figure of merit (ZT) of 1.33 at 370 K was achieved for the sample with x=0.75, about 34% higher than that of BiSbTe at the same temperature, making these composites more attractive for commercial applications. This enhancement of ZT can be mainly ascribed to a remarkable increase of the electrical conductivity and a simultaneous decrease of the lattice thermal conductivity by the introduction of ZnAlO nanopowder.