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Issue 13, 2014
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Thermoelectric properties of a single graphene sheet and its derivatives

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Abstract

The thermoelectric properties of pristine graphene and H2S adsorbed onto bridge, hollow and top sites of a graphene sheet are investigated using the semi-classical Boltzmann transport theory. The average values of electrical conductivity, thermal conductivity, Seebeck coefficient, figure of merit (ZT) and the average value of the power factor (Pav) are reported and discussed in detail. While pristine graphene is a zero band gap semiconductor, adsorption of H2S onto the bridge site opens up a direct energy gap of about 0.04 eV, adsorption of a H2S molecule onto the top site opens up a gap of 0.3 eV, and adsorption of H2S onto the hollow site makes it metallic. The investigation of ZT and power factor values suggests that a top-site configuration could be a potential candidate for thermoelectric applications in the range 300–600 K.

Graphical abstract: Thermoelectric properties of a single graphene sheet and its derivatives

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Article information


Submitted
15 Nov 2013
Accepted
09 Jan 2014
First published
10 Jan 2014

J. Mater. Chem. C, 2014,2, 2346-2352
Article type
Paper

Thermoelectric properties of a single graphene sheet and its derivatives

A. H. Reshak, S. A. Khan and S. Auluck, J. Mater. Chem. C, 2014, 2, 2346
DOI: 10.1039/C3TC32260B

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