Enhancement of thermoelectric properties of gamma-graphyne nanoribbons with edge modulation

Caihua Wang, Tao Ouyang (), Yuanping Chen and Jianxin Zhong

The European Physical Journal B: Condensed Matter and Complex Systems, 2015, vol. 88, issue 5, 1-6

Abstract: Graphyne, a sister material of graphene, is a new hot topic in present carbon-based nanomaterials research community. Taking gamma-graphyne nanoribbon as an example, we investigate the effect of edge modulation on the thermoelectric properties by means of nonequilibrium Green’s function (NEGF) in the ballistic transport region. Our simulations show that the thermoelectric performance of gamma-graphyne nanoribbons can be enhanced observably through the edge modulation (the figure of merit could exceed 1.2 at room temperature), and such enhancement strongly depends on the geometric characters of edge modulation. This evident improvement of thermoelectric efficiency mainly originates from the fact that the degraded phononic thermal conductance owning to edge phonon scattering outweighs the suppression of thermal power. Our findings further qualify gamma-graphyne as a promising candidate for thermoelectric applications and could offer useful guidance for the future thermoelectric devices design and fabrication. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Keywords: Mesoscopic and Nanoscale Systems (search for similar items in EconPapers)
Date: 2015
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://hdl.handle.net/10.1140/epjb/e2015-60153-y (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:88:y:2015:i:5:p:1-6:10.1140/epjb/e2015-60153-y

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/10051

DOI: 10.1140/epjb/e2015-60153-y

Access Statistics for this article

The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio

More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().