Details

Autor(en) / Beteiligte

• Ouyang, Yijian
• Guo, Jing

Titel

A theoretical study on thermoelectric properties of graphene nanoribbons

Ist Teil von

• Applied physics letters, 2009-06, Vol.94 (26), p.263107-263107-3

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2009

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We investigate the thermoelectric properties of graphene nanoribbons (GNRs) by solving atomistic electron and phonon transport equations in the nonequilibrium Green's function formalism. The dependence of thermopower on temperature and chemical potential is compared to that of graphene, which shows the important role of quasi-one-dimensional geometry in determining the thermoelectric properties of a GNR. The edge roughness and lattice vacancy are found to increase the thermopower but decrease the thermoelectric Z T factor because the decrease in the electronic conductance outweighs the decrease in the thermal conductance and the increase in the thermopower.