中文摘要：

热电材料是一种能够实现电能与热能之间直接转换的功能材料，它可提供一种既清洁又安全的发电和制冷方式，具有广泛的应用前景．近年来的理论和实验研究表明，低维化和小尺度化是热电材料研究和开发极具前景的发展方向．低维结构大大提高了费米面附近的态密度，提高了Seebeck系数；将材料的晶粒细化到纳米级别，可以增加对载流子和声子的散射，降低热导率，最终提高了材料的热电性能．对低维热电材料的研究进展进行介绍和简要评述，并对影响低维热电材料的热电性质的因素进行了讨论．

英文摘要：

As one of the options for the energy conversion between thermal and electrical energy ,thermoelectric materials are widely used as clean, reliable, and sustainable energy sources. Recent theoretical and experimental studies have demonstrated that it is promising to decrease the dimensions and the sizes in the research and development of thermoelectric materials. The low-dimensional configuration can increase in the density of states at Fermi energy greatly. With the crystal size decreasing from micron-meter to nano-meter, the carrier and phonon scattering increased,which lead to the increasing of Seebeck coefficient and decreasing of thermal conductivity, and resultantly the improvement of the thermoelectric property. The research progress of low-dimensional thermoelectric materials is introduced and reviewed. The influencing factors on thermoelectric performance of low-dimensional thermoelectric materials are further discussed.