Planar Vacancies in Sn1-xBixTe Nanoribbons
Article
Article Title | Planar Vacancies in Sn1-xBixTe Nanoribbons |
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ERA Journal ID | 35029 |
Article Category | Article |
Authors | Zou, Yi-Chao (Author), Chen, Zhi-Gang (Author), Kong, Fantai (Author), Lin, Jing (Author), Drennan, John (Author), Cho, Kyeongjae (Author), Wang, Zhongchang (Author) and Zou, Jin (Author) |
Journal Title | ACS Nano |
Journal Citation | 10 (5), pp. 5507-5515 |
Number of Pages | 9 |
Year | 2016 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 1936-0851 |
1936-086X | |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acsnano.6b01953 |
Web Address (URL) | http://pubs.acs.org/doi/abs/10.1021/acsnano.6b01953 |
Abstract | Vacancy engineering is a crucial approach to manipulate physical properties of semiconductors. Here, we demonstrate that planar vacancies are formed in Sn1-xBixTe nanoribbons by using Bi dopants via a facile chemical vapor deposition. Through combination of sub-angstrom-resolution imaging and density functional theory calculations, these planar vacancies are found to be associated with Bi segregations, which significantly lower their formation energies. The planar vacancies exhibit polymorphic structures with local variations in the lattice relaxation level, determined by their proximity to the nanoribbon surface. Such polymorphic planar vacancies, in conjunction with Bi dopants, trigger distinct localized electronic states, offering platforms for device applications of ternary chalcogenide materials. |
Keywords | chalcogenides; density functional theory; nanoribbon; scanning transmission electron microscopy; thermoelectric; vacancy; Angstrom resolution; localized electronic state; nanoribbon; polymorphic structure; scanning transmission electron microscopy; Ternary chalcogenides; tin and alloys; optical devices and systems; nanotechnology; |
ANZSRC Field of Research 2020 | 401699. Materials engineering not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
University of Texas at Dallas, United States | |
Tohoku University, Japan | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q414v/planar-vacancies-in-sn1-xbixte-nanoribbons
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