Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5388
Title: Electronic, phononic, and thermoelectric properties of graphyne sheets
Authors: Sevinçli, Haldun
Sevik, Cem
Keywords: Atomic density
Electrical conduction
Graphyne
Energy gap
Thermoelectric equipment
Issue Date: Dec-2014
Publisher: American Institute of Physics
Source: Sevinçli, H., and Sevik, C. (2014). Electronic, phononic, and thermoelectric properties of graphyne sheets. Applied Physics Letters, 105(22). doi:10.1063/1.4902920
Abstract: Electron, phonon, and thermoelectric transport properties of α-, β-, γ-, and 6,6,12-graphyne sheets are compared and contrasted with those of graphene. α-, β-, and 6,6,12-graphynes, with direction dependent Dirac dispersions, have higher electronic transmittance than graphene. γ-graphyne also attains better electrical conduction than graphene except at its band gap. Vibrationally, graphene conducts heat much more efficiently than graphynes, a behavior beyond an atomic density differences explanation. Seebeck coefficients of the considered Dirac materials are similar but thermoelectric power factors decrease with increasing effective speeds of light. γ-graphyne yields the highest thermoelectric efficiency with a thermoelectric figure of merit as high as ZT-=-0.45, almost an order of magnitude higher than that of graphene.
URI: https://doi.org/10.1063/1.4902920
http://hdl.handle.net/11147/5388
ISSN: 0003-6951
0003-6951
1077-3118
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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