Quantum confinement in few layer SnS nanosheets

John D. Dwyer, Elizabeth Juarez Diaz, Thomas E. Webber, Adlai Katzenberg, Miguel Modestino, Eray Aydil

Research output: Contribution to journalArticle

Abstract

Orthorhombic tin monosulfide (SnS) consists of layers of covalently bound Sn and S atoms held together by weak van der Waals forces and is a stable two-dimensional material with potentially useful properties in emerging applications such as valleytronics. Large-scale sustainable synthesis of few-layer (e.g., 1-10 layers) SnS is a challenge, which also slows progress in understanding their properties as a function of number of layers. Herein we describe solvothermal synthesis of SnS in water or ethylene glycol. The latter yields a flower-like morphology where the petals are SnS nanoplates and sonication and separation of these flowers via differential centrifugation yields 1-10 layer SnS nanoplates. The direct optical absorption edges of these SnS nanoplates blue-shift due to quantum confinement from 1.33 to 1.88 eV as the thickness (number of layers) is decreased from ∼5 nm (10 layers) to ∼2 nm (4 layers).

Original languageEnglish (US)
Number of pages1
JournalNanotechnology
Volume30
Issue number24
DOIs
StatePublished - Jun 14 2019

Fingerprint

Quantum confinement
Nanosheets
Van der Waals forces
Sonication
Ethylene Glycol
Centrifugation
Tin
Ethylene glycol
Light absorption
Atoms
Water

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Dwyer, J. D., Diaz, E. J., Webber, T. E., Katzenberg, A., Modestino, M., & Aydil, E. (2019). Quantum confinement in few layer SnS nanosheets. Nanotechnology, 30(24). https://doi.org/10.1088/1361-6528/ab0e3e

Quantum confinement in few layer SnS nanosheets. / Dwyer, John D.; Diaz, Elizabeth Juarez; Webber, Thomas E.; Katzenberg, Adlai; Modestino, Miguel; Aydil, Eray.

In: Nanotechnology, Vol. 30, No. 24, 14.06.2019.

Research output: Contribution to journalArticle

Dwyer, JD, Diaz, EJ, Webber, TE, Katzenberg, A, Modestino, M & Aydil, E 2019, 'Quantum confinement in few layer SnS nanosheets', Nanotechnology, vol. 30, no. 24. https://doi.org/10.1088/1361-6528/ab0e3e
Dwyer JD, Diaz EJ, Webber TE, Katzenberg A, Modestino M, Aydil E. Quantum confinement in few layer SnS nanosheets. Nanotechnology. 2019 Jun 14;30(24). https://doi.org/10.1088/1361-6528/ab0e3e
Dwyer, John D. ; Diaz, Elizabeth Juarez ; Webber, Thomas E. ; Katzenberg, Adlai ; Modestino, Miguel ; Aydil, Eray. / Quantum confinement in few layer SnS nanosheets. In: Nanotechnology. 2019 ; Vol. 30, No. 24.
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