摘要
利用非平衡格林函数方法与朗道输运理论,研究石墨烯纳米条带的热电性质。研究结果表明:zigzag型石墨烯纳米条带的热电性质随着宽度的增加而减少;armchair型石墨烯纳米条带的热电性质不仅与宽度有关,而且与其带隙是否被打开有关,当其表现为半导体时,其热电性质远大于zigzag边缘的石墨烯纳米条带。
Investigated the thermoelectric properties（TE） of graphene nanoribbons（GNRs） by method of nonequilibrium Green＇s function approach and Landauer transport theory. The results show that TE of zigzag type GNRs decreases with its width increasing, TE of armchair edge GNRs are not only related to its width, but also with the band gap open or not, when it appears as a semiconductor, its thermoelectric properties are much larger than that of zigzag edge graphene nanoribbons.
出处
《湖南工业大学学报》
2016年第2期68-71,共4页
Journal of Hunan University of Technology
基金
国家自然科学基金资助项目(11374094)
湖南省自然科学基金资助项目(2015JJ2050
2015JJ3060)
关键词
石墨烯纳米条带
声子热导
热电性质
graphene nanoribbon
phonon thermal conductivity
thermoelectric property
