期刊
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
卷 81, 期 -, 页码 96-101出版社
ELSEVIER
DOI: 10.1016/j.physe.2016.03.006
关键词
Thermoelectric transport; Graphene; Hexagonal boron nitride; Density functional theory; Boltzmann transport theory; Green-Kubo equilibrium MD
资金
- S.N. Bose Centre through a Senior Research Fellowship
We present first principles study of thermoelectric transport properties of sandwiched heterostructure of Graphene (G)/hexagonal Boron Nitride (BN)/G, based on Boltzmann transport theory for band electrons using the bandstructure calculated from the Density Functional Theory (DFT) based plane-wave method. Calculations were carried out for three, four and five BN layers sandwiched between Graphene layers with three different arrangements to obtain the Seebeck coefficient and Power factor in T similar to 25-400 K range. Moreover, using Molecular Dynamics (MD) simulations with very large simulation cell we obtained the thermal conductance (K) of these heterostructures and obtained finally the Figure-of-Merit (ZT). These results are in agreement with recently reported experimental measurements. (C) 2016 Elsevier B.V. All rights reserved.
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