Projects per year
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 - Jun 14 2019 |
Bibliographical note
Publisher Copyright:© 2019 IOP Publishing Ltd.
Keywords
- 2D materials
- quantum confinement
- SnS
MRSEC Support
- Primary
PubMed: MeSH publication types
- Journal Article
Fingerprint
Dive into the research topics of 'Quantum confinement in few layer SnS nanosheets'. Together they form a unique fingerprint.Projects
- 3 Finished
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REU Site: University of Minnesota MRSEC in Nanomaterials
Blank, D. A. (PI)
THE NATIONAL SCIENCE FOUNDATION
4/1/16 → 3/31/19
Project: Research project
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University of Minnesota MRSEC (DMR-1420013)
Lodge, T. P. (PI)
11/1/14 → 10/31/20
Project: Research project
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MRSEC IRG-2: Sustainable Nanocrystal Materials
Kortshagen, U. R. (Coordinator), Aydil, E. S. (Senior Investigator), Campbell, S. A. (Senior Investigator), Francis, L. F. (Senior Investigator), Haynes, C. L. (Senior Investigator), Hogan, C. (Senior Investigator), Mkhoyan, A. (Senior Investigator), Shklovskii, B. I. (Senior Investigator) & Wang, X. (Senior Investigator)
11/1/14 → 10/31/20
Project: Research project