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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 language | English (US) |
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Article number | 245705 |
Journal | Nanotechnology |
Volume | 30 |
Issue number | 24 |
DOIs | |
State | Published - Apr 1 2019 |
Bibliographical note
Publisher Copyright:© 2019 IOP Publishing Ltd.
Keywords
- 2D materials
- quantum confinement
- SnS
How much support was provided by MRSEC?
- Primary
Reporting period for MRSEC
- Period 6
PubMed: MeSH publication types
- Journal Article
Fingerprint
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MRSEC IRG-2: Sustainable Nanocrystal Materials
Kortshagen, U. R., Aydil, E. S., Campbell, S. A., Francis, L. F., Haynes, C. L., Hogan, C., Mkhoyan, A., Shklovskii, B. I. & Wang, X.
9/1/98 → …
Project: Research project
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