Self-scrolling MoS2 metallic wires

Zegao Wang, Hong Hui Wu, Qiang Li, Flemming Besenbacher, Xiao Cheng Zeng, Mingdong Dong

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Two-dimensional (2D) van der Waals (vdW) materials with strong in-plane chemical bonds and weak interaction in the out-of-plane direction have been acknowledged as a basic building block for designing dimensional materials in 0D, 1D, 2D and 3D forms. Compared to the explosive research on 2D vdW materials, quasi-one-dimensional (quasi-1D) vdW materials have received rare attention, despite the fact that they also present rich physics in electronics and engineering implications. Herein, quasi-1D MoS2 nanoscrolls are directly fabricated from CVD-grown 2D triangular MoS2 sheets. The formation, stability and electronic properties of quasi-1D MoS2 nanoscrolls are studied experimentally and theoretically. The formation of a nanoscroll always starts from the edge of a triangular MoS2 sheet along its armchair orientation. The electronic properties of MoS2 nanoscrolls are systemically studied with optical spectroscopy and electrical transport together with density-functional theory (DFT) calculations. Surprisingly, the carrier mobility and contact properties of MoS2 nanoscroll based field effect transistors (FETs) are distinct from that of 2D MoS2 sheets. The transition from a 2D semiconductor MoS2 sheet to a 1D metallic MoS2 nanoscroll is successfully achieved. It is expected that this method of fabricating MoS2 nanoscrolls will attract wide interest for 1D transition metal dichalcogenides with novel physical and chemical properties.

Original languageEnglish (US)
Pages (from-to)18178-18185
Number of pages8
JournalNanoscale
Volume10
Issue number38
DOIs
StatePublished - Oct 14 2018

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Wire
Electronic properties
Chemical bonds
Carrier mobility
Field effect transistors
Chemical properties
Transition metals
Density functional theory
Chemical vapor deposition
Electronic equipment
Physics
Physical properties
Semiconductor materials
Direction compound
Optical spectroscopy

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Wang, Z., Wu, H. H., Li, Q., Besenbacher, F., Zeng, X. C., & Dong, M. (2018). Self-scrolling MoS2 metallic wires. Nanoscale, 10(38), 18178-18185. https://doi.org/10.1039/c8nr04611e

Self-scrolling MoS2 metallic wires. / Wang, Zegao; Wu, Hong Hui; Li, Qiang; Besenbacher, Flemming; Zeng, Xiao Cheng; Dong, Mingdong.

In: Nanoscale, Vol. 10, No. 38, 14.10.2018, p. 18178-18185.

Research output: Contribution to journalArticle

Wang, Z, Wu, HH, Li, Q, Besenbacher, F, Zeng, XC & Dong, M 2018, 'Self-scrolling MoS2 metallic wires', Nanoscale, vol. 10, no. 38, pp. 18178-18185. https://doi.org/10.1039/c8nr04611e
Wang Z, Wu HH, Li Q, Besenbacher F, Zeng XC, Dong M. Self-scrolling MoS2 metallic wires. Nanoscale. 2018 Oct 14;10(38):18178-18185. https://doi.org/10.1039/c8nr04611e
Wang, Zegao ; Wu, Hong Hui ; Li, Qiang ; Besenbacher, Flemming ; Zeng, Xiao Cheng ; Dong, Mingdong. / Self-scrolling MoS2 metallic wires. In: Nanoscale. 2018 ; Vol. 10, No. 38. pp. 18178-18185.
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