Diverse anisotropy of phonon transport in two-dimensional group iv-vi compounds: a comparative study
文献类型：期刊论文
| 作者 | Qin, Guangzhao1,2; Qin, Zhenzhen3; Fang, Wu-Zhang4; Zhang, Li-Chuan1; Yue, Sheng-Ying5; Yan, Qing-Bo1; Hu, Ming2,5; Su, Gang4 |
| 刊名 | Nanoscale
 |
| 出版日期 | 2016 |
| 卷号 | 8期号:21页码:11306-11319 |
| ISSN号 | 2040-3364 |
| DOI | 10.1039/c6nr01349j |
| 通讯作者 | Yan, qing-bo(yan@ucas.ac.cn) ; Hu, ming(hum@ghi.rwth-aachen.de) ; Su, gang(gsu@ucas.ac.cn) |
| 英文摘要 | New classes of two-dimensional (2d) materials beyond graphene, including layered and non-layered, and their heterostructures, are currently attracting increasing interest due to their promising applications in nanoelectronics, optoelectronics and clean energy, where thermal transport is a fundamental physical parameter. in this paper, we systematically investigated the phonon transport properties of the 2d orthorhombic group iv-vi compounds of ges, gese, sns and snse by solving the boltzmann transport equation (bte) based on first-principles calculations. despite their similar puckered (hinge-like) structure along the armchair direction as phosphorene, the four monolayer compounds possess diverse anisotropic properties in many aspects, such as phonon group velocity, young's modulus and lattice thermal conductivity (kappa), etc. especially, the. along the zigzag and armchair directions of monolayer ges shows the strongest anisotropy while monolayer sns and snse show almost isotropy in phonon transport. the origin of the diverse anisotropy is fully studied and the underlying mechanism is discussed in details. with limited size, the kappa could be effectively lowered, and the anisotropy could be effectively modulated by nanostructuring, which would extend the applications to nanoscale thermoelectrics and thermal management. our study offers fundamental understanding of the anisotropic phonon transport properties of 2d materials, and would be of significance for further study, modulation and applications in emerging technologies. |
| WOS关键词 | LATTICE THERMAL-CONDUCTIVITY ; THERMOELECTRIC PERFORMANCE ; SNSE ; CRYSTALS ; APPROXIMATION ; PHOSPHORENE ; GRAPHENE ; SHEET ; GE |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS类目 | Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000380888200054 |
| 出版者 | ROYAL SOC CHEMISTRY |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375145 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Yan, Qing-Bo; Hu, Ming; Su, Gang |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China 2.Rhein Westfal TH Aachen, Fac Georesources & Mat Engn, Div Mat Sci & Engn, Inst Mineral Engn, D-52064 Aachen, Germany 3.Nankai Univ, Coll Elect Informat & Opt Engn, Tianjin 300071, Peoples R China 4.Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China 5.Rhein Westfal TH Aachen, Aachen Inst Adv Study Computat Engn Sci AICES, D-52062 Aachen, Germany |
| 推荐引用方式 GB/T 7714 | Qin, Guangzhao,Qin, Zhenzhen,Fang, Wu-Zhang,et al. Diverse anisotropy of phonon transport in two-dimensional group iv-vi compounds: a comparative study[J]. Nanoscale,2016,8(21):11306-11319. |
| APA | Qin, Guangzhao.,Qin, Zhenzhen.,Fang, Wu-Zhang.,Zhang, Li-Chuan.,Yue, Sheng-Ying.,...&Su, Gang.(2016).Diverse anisotropy of phonon transport in two-dimensional group iv-vi compounds: a comparative study.Nanoscale,8(21),11306-11319. |
| MLA | Qin, Guangzhao,et al."Diverse anisotropy of phonon transport in two-dimensional group iv-vi compounds: a comparative study".Nanoscale 8.21(2016):11306-11319. |
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来源：中国科学院大学
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