Evaporative thinning: A facile synthesis method for high quality ultrathin layers of 2D crystals

Yi Kai Huang, Jeffrey D. Cain, Lintao Peng, Shiqiang Hao, Thomas Chasapis, Mercouri G Kanatzidis, Christopher Wolverton, Matthew Grayson, Vinayak P. Dravid

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The palette of two-dimensional materials has expanded beyond graphene in recent years to include the chalcogenides among other systems. However, there is a considerable paucity of methods for controlled synthesis of mono- and/or few-layer two-dimensional materials with desirable quality, reproducibility, and generality. Here we show a facile top-down synthesis approach for ultrathin layers of 2D materials down to monolayer. Our method is based on controlled evaporative thinning of initially large sheets, as deposited by vapor mass-transport. Rather than optimizing conditions for monolayer deposition, our approach makes use of selective evaporation of thick sheets to control the eventual thickness, down to a monolayer, a process which appears to be self-stopping. As a result, 2D sheets with high yield, high reproducibility, and excellent quality can be generated with large (>10 μm) and thin (∼1-2 nm) dimensions. Evaporative thinning promises to greatly reduce the difficulty involved in isolating large, mono- and few-layers of 2D materials for subsequent studies.

Original languageEnglish
Pages (from-to)10851-10857
Number of pages7
JournalACS Nano
Volume8
Issue number10
DOIs
Publication statusPublished - Oct 28 2014

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Monolayers
Crystals
synthesis
crystals
chalcogenides
stopping
Chalcogenides
Graphite
graphene
evaporation
vapors
Graphene
Evaporation
Mass transfer
Vapors

Keywords

  • 2D synthesis
  • bismuth selenide
  • transmission electron microscopy
  • two-dimensional (2D) materials

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Huang, Y. K., Cain, J. D., Peng, L., Hao, S., Chasapis, T., Kanatzidis, M. G., ... Dravid, V. P. (2014). Evaporative thinning: A facile synthesis method for high quality ultrathin layers of 2D crystals. ACS Nano, 8(10), 10851-10857. https://doi.org/10.1021/nn504664p

Evaporative thinning : A facile synthesis method for high quality ultrathin layers of 2D crystals. / Huang, Yi Kai; Cain, Jeffrey D.; Peng, Lintao; Hao, Shiqiang; Chasapis, Thomas; Kanatzidis, Mercouri G; Wolverton, Christopher; Grayson, Matthew; Dravid, Vinayak P.

In: ACS Nano, Vol. 8, No. 10, 28.10.2014, p. 10851-10857.

Research output: Contribution to journalArticle

Huang, YK, Cain, JD, Peng, L, Hao, S, Chasapis, T, Kanatzidis, MG, Wolverton, C, Grayson, M & Dravid, VP 2014, 'Evaporative thinning: A facile synthesis method for high quality ultrathin layers of 2D crystals', ACS Nano, vol. 8, no. 10, pp. 10851-10857. https://doi.org/10.1021/nn504664p
Huang, Yi Kai ; Cain, Jeffrey D. ; Peng, Lintao ; Hao, Shiqiang ; Chasapis, Thomas ; Kanatzidis, Mercouri G ; Wolverton, Christopher ; Grayson, Matthew ; Dravid, Vinayak P. / Evaporative thinning : A facile synthesis method for high quality ultrathin layers of 2D crystals. In: ACS Nano. 2014 ; Vol. 8, No. 10. pp. 10851-10857.
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