Research of percolative thermoelectric materials by means of Thermoelectric-effect spectroscop

作为开发新型热电材料的一项研究，我们通过揭示陶瓷体系中的渗流(PC)现象，导出了一种分析热电性质的简单而有效的方法S(T)。在实验上，用我们的方法对S(T)在稀土元素体系中的数据进行了分析，并估计了最初定义的PC指数Γ，发现Γ的行为与通常使用的功率因数P的行为相似，这表明我们的方法对于探索新的热电材料是有效的。理论上，我们提出了可以通过对双能带半导体进行建模来提高热电性能。

As a study of developing new thermoelectric materials, we have derived a simple but effective method for analyzing thermoelectric properties S(T) by shedding a light on the percolation (PC) phenomenon in ceramic systems. Experimentally, S(T) data in rare-earth element systems are analyzed in terms of our method and estimated a PC index Γ defined originally, revealing that the behavior of Γ is similar to that of the power factor P being used conventionally, which indicates that our method is effective for exploring new thermoelectric materials. Theoretically, we have proposed that the thermoelectric performance could be improved by modeling a two-band semiconductor.