Acute mechano-electronic responses in twisted phosphorene nanoribbons

Woosun Jang, Kisung Kang, Aloysius Soon

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Many different forms of mechanical and structural deformations have been employed to alter the electronic structure of various modern two-dimensional (2D) nanomaterials. Given the recent interest in the new class of 2D nanomaterials-phosphorene, here we investigate how the rotational strain-dependent electronic properties of low-dimensional phosphorene may be exploited for technological gain. Here, using first-principles density-functional theory, we investigate the mechanical stability of twisted one-dimensional phosphorene nanoribbons (TPNR) by measuring their critical twist angle (θc) and shear modulus as a function of the applied mechanical torque. We find a strong anisotropic, chirality-dependent mechano-electronic response in the hydrogen-passivated TPNRs upon vortical deformation, resulting in a striking difference in the change in the carrier effective mass as a function of torque angle (and thus, the corresponding change in carrier mobility) between the zigzag and armchair directions in these TPNRs. The accompanied tunable band-gap energies for the hydrogen-passivated zigzag TPNRs may then be exploited for various key opto-electronic nanodevices.

Original languageEnglish
Pages (from-to)14778-14784
Number of pages7
JournalNanoscale
Volume8
Issue number31
DOIs
Publication statusPublished - 2016 Aug 21

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Nanoribbons
Carbon Nanotubes
Nanostructured materials
Hydrogen
Torque
Mechanical stability
Chirality
Carrier mobility
Electronic properties
Electronic structure
Density functional theory
Energy gap
Elastic moduli
Direction compound

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Jang, Woosun ; Kang, Kisung ; Soon, Aloysius. / Acute mechano-electronic responses in twisted phosphorene nanoribbons. In: Nanoscale. 2016 ; Vol. 8, No. 31. pp. 14778-14784.
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Acute mechano-electronic responses in twisted phosphorene nanoribbons. / Jang, Woosun; Kang, Kisung; Soon, Aloysius.

In: Nanoscale, Vol. 8, No. 31, 21.08.2016, p. 14778-14784.

Research output: Contribution to journalArticle

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