High thermoelectric performance of solid solutions CuGa1-xInxTe2 (x=0-1.0)
High thermoelectric performance of solid solutions CuGa1-xInxTe2 (x=0-1.0)
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固溶体CuGa1-xInxTe2（x=0-1.0）的高热电性能
DOI：
10.1063/1.4726109
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发表时间：
2012-06-04
影响因子：
4
通讯作者：
Cui, Jiaolin
中科院分区：
文献类型：
--
作者：
Li, Yapeng;Meng, Qingsen;Cui, Jiaolin
在CuMTe2(M=Ga，In)晶格中用In(Ga)等电子取代Ga(In)，合成了CuGa1-xInxTe2(x=0-1.0)固溶体，并对其热电性能进行了测试。取代后的结构提供了高得多的塞贝克系数(α)、相对较低的热(Kappa)和电导率(Sigma)。在701K时，CuGa0.36In0.64Te2的α为283.15µV K-1，σ为1.15×10(4)欧米茄(-1)m(-1)K-1，kappa为0.71W m(-1)K-1，其优值系数(ZT)为0.91，约为母体CuGaTe2和CuInTe2的两倍。这种材料在中温下具有很好的应用前景。(C)2012年美国物理研究所。[http://dx.doi.org/10.1063/1.4726109]
We synthesized the solid solutions CuGa1-xInxTe2 (x=0-1.0) by isoelectronic substitution of element In (Ga) for Ga(In) in the CuMTe2 (M=Ga, In) lattices and examined their thermoelectric properties. The structure upon substitution provides much high Seebeck coefficient (alpha), relatively low thermal (kappa), and electrical conductivity (sigma). AT 701 K, the alpha, sigma, and kappa are 283.15 mu V K-1, 1.15 x 10(4) Omega(-1) m(-1), and 0.71W m(-1) K-1, respectively, for CuGa0.36In0.64Te2, which give the figure of merit (ZT) of 0.91, about two times those of the mother compounds CuGaTe2 and CuInTe2. This material holds great application perspectives at intermediate temperatures. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4726109]