同典型的Bi2Te3、PbTe等热电材料比较,Si是轻元素,在地壳中储量极为丰富,而且无毒性,是环境和谐元素。因此,若能开发出含Si的热电材料,则将成为不含稀有元素的低价无毒的热电材料。日本大阪大学大石佑治概括了纳米硅室温下热导率同热电优值的关系,表明纳米硅的优良热电性能主要取决于热导率 Compared with the typical thermoelectric materials such as Bi2Te3 and PbTe, Si is a light element and has extremely rich reserves in the crust and is non-toxic, making it an environmentally harmonious element. Therefore, if a Si-containing thermoelectric material can be developed, it will become a low-cost, non-toxic, thermoelectric material containing no rare elements. Osaka University, Osaka, Japan Yoshio Oshima summarized the relationship between the thermal conductivity of nanosilica and the thermoelectric power at room temperature, indicating that the excellent thermoelectric properties of nanocrystalline silicon mainly depend on the thermal conductivity