Electronic and thermoelectric properties of assembled graphene nanoribbons with elastic strain and structural dislocation

Liangbo Liang, Vincent Meunier

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Graphene nanowiggles (GNWs) are one-dimensional wiggle edged graphene nanoribbons (GNRs) that have been synthesized using an atomically precise bottom-up approach. They are known to possess superior thermoelectric properties compared to straight GNRs. Here, first-principles density functional theory calculations establish that these properties can be further enhanced when they undergo a structural dislocation. While such plastic deformation raises the figure of merit ZT above 1 at room temperature, an elastic deformation under uniaxial tension does not increase ZT. The calculations also show that the GNWs possess a Youngs modulus (0.82 TPa) smaller than that of their straight GNR counterparts (1.08 TPa).

Original languageEnglish (US)
Article number143101
JournalApplied Physics Letters
Volume102
Issue number14
DOIs
StatePublished - Apr 8 2013

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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