热电器件由于结构简单、可靠性好、无污染等优点,在微电子、能源等领域具有广泛的应用。探索具有高热电优值(ZT)的新材料是近些年来的研究热点。超晶格材料由于独特的量子限制效应和声子界面散射,ZT值比块体材料大幅度提高。而锑化物二类超晶格与传统超晶格不同,其禁带呈错开状,由此又可以带来热电性能新的变化。阐述了锑化物二类超晶格的能带结构以及能够获得高ZT值的优势,介绍了其热电机理和研究进展,以及当前该类超晶格的制备工艺和测试方法。
Thermoelectric devices have been widely used in the field of microelectronics and energy due to their simplicity,high reliability,pollution-free etc.In recent years,scientists have been seeking for new materials with high thermoelectric merits (ZT).Superlattices own higher ZT than bulk materials because of the quantum confinement and phonon interface scattering.For type-Ⅱ superlattices,the forbidden bands are separated,which differs from tradi-tional superlattices and bring new thermoelectric property.This paper firstly describes the band structure of antimo-nide type-Ⅱ superlattice which has the potential to achieve high ZT value.Then the thermoelectric mechanism and re-search progress of antimonide type-Ⅱ superlattice are introduced.Finally,the fabrication technologies and measure-ment methods for this superlattice are summarized.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%