Wrap–Around Core–Shell Heterostructures of Layered Crystals
Abstract
Engineered heterostructures create new functionality by integrating dissimilar materials. Combining different 2D crystals naturally produces two distinct classes of heterostructures, vertical van der Waals (vdW) stacks or 2D sheets bonded laterally by covalent line interfaces. Here, when joining thicker layered crystals, the arising structural and topological conflicts can result in more complex geometries. Phase separation during one–pot synthesis of layered tin chalcogenides spontaneously creates core–shell structures in which large orthorhombic SnS crystals are enclosed in a wrap–around shell of trigonal SnS2, forcing the coexistence of parallel vdW layering along with unconventional, orthogonally layered core–shell interfaces. Measurements of the optoelectronic properties establish anisotropic carrier separation near type II core–shell interfaces and extended long–wavelength light harvesting via spatially indirect interfacial absorption, making multifunctional layered core–shell structures attractive for energy–conversion applications.
- Authors:
-
[1];
[2]
- Univ. of Nebraska‐Lincoln, Lincoln, NE (United States). Dept. of Electrical and Computer Engineering
- Univ. of Nebraska‐Lincoln, Lincoln, NE (United States). Dept. of Mechanical and Materials Engineering
- Publication Date:
- Research Org.:
- Univ. of Nebraska, Lincoln, NE (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
- OSTI Identifier:
- 1573812
- Alternate Identifier(s):
- OSTI ID: 1524105
- Grant/Contract Number:
- SC0016343
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Materials
- Additional Journal Information:
- Journal Volume: 31; Journal Issue: 29; Journal ID: ISSN 0935-9648
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; charge transfer; heterostructures; interfaces; layered materials; light harvesting
Citation Formats
Sutter, Peter, Wang, Jia, and Sutter, Eli. Wrap–Around Core–Shell Heterostructures of Layered Crystals. United States: N. p., 2019.
Web. doi:10.1002/adma.201902166.
Sutter, Peter, Wang, Jia, & Sutter, Eli. Wrap–Around Core–Shell Heterostructures of Layered Crystals. United States. https://doi.org/10.1002/adma.201902166
Sutter, Peter, Wang, Jia, and Sutter, Eli. Mon .
"Wrap–Around Core–Shell Heterostructures of Layered Crystals". United States. https://doi.org/10.1002/adma.201902166. https://www.osti.gov/servlets/purl/1573812.
@article{osti_1573812,
title = {Wrap–Around Core–Shell Heterostructures of Layered Crystals},
author = {Sutter, Peter and Wang, Jia and Sutter, Eli},
abstractNote = {Engineered heterostructures create new functionality by integrating dissimilar materials. Combining different 2D crystals naturally produces two distinct classes of heterostructures, vertical van der Waals (vdW) stacks or 2D sheets bonded laterally by covalent line interfaces. Here, when joining thicker layered crystals, the arising structural and topological conflicts can result in more complex geometries. Phase separation during one–pot synthesis of layered tin chalcogenides spontaneously creates core–shell structures in which large orthorhombic SnS crystals are enclosed in a wrap–around shell of trigonal SnS2, forcing the coexistence of parallel vdW layering along with unconventional, orthogonally layered core–shell interfaces. Measurements of the optoelectronic properties establish anisotropic carrier separation near type II core–shell interfaces and extended long–wavelength light harvesting via spatially indirect interfacial absorption, making multifunctional layered core–shell structures attractive for energy–conversion applications.},
doi = {10.1002/adma.201902166},
journal = {Advanced Materials},
number = 29,
volume = 31,
place = {United States},
year = {Mon Jun 03 00:00:00 EDT 2019},
month = {Mon Jun 03 00:00:00 EDT 2019}
}
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