Thermoelectric properties of Bi2O2Se
Thermoelectric properties of Bi2O2Se
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DOI：
10.1016/j.matchemphys.2009.08.067
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发表时间：
2010-01-15
影响因子：
4.6
通讯作者：
Uher, C.
中科院分区：
文献类型：
--
作者：
Ruleova, P.;Drasar, C.;Uher, C.
以Bi2Se3和Bi2O3为原料，在真空石英瓶中通过固相反应合成了Bi2O2Se。产物为四方晶格，X-射线衍射图仅显示Bi2O2Se的线条。采用矩形石墨模热压法制备了热电性能测试样品。通过测量Seebeck系数、电导率和热导率随温度的变化对样品进行了表征。根据实验数据，我们计算出未优化材料在800K时的无因次优值ZT接近0.2。(C)2009爱思唯尔公司版权所有。
Bi2O2Se was synthesized from Bi2Se3 and Bi2O3 by solid state reaction in an evacuated quartz ampoule. The product crystallizes in the tetragonal type lattice and X-ray pattern displays lines of the Bi2O2Se only. Samples for thermoelectric property measurements were prepared using hot pressing in rectangular graphite dies. The samples were characterized by the measurements of Seebeck coefficient, electrical conductivity and thermal conductivity as a function of temperature. From the experimental data we calculate the dimensionless figure of merit ZT that for a non-optimized material approaches the value 0.2 at 800 K. (C) 2009 Elsevier B.V. All rights reserved.