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http://hdl.handle.net/10397/35701
Title: | Photoluminescence enhancement in few-layer WS2 films via Au nanoparticles | Authors: | Choi, SY Yip, CT Li, GC Lei, DY Fung, KH Yu, SF Hao, J |
Issue Date: | 2015 | Source: | AIP advances, 2015, v. 5, no. 6, 67148, p. 067148-1-067148-6 | Abstract: | Nano-composites of two-dimensional atomic layered WS2 and Au nanoparticles (AuNPs) have been fabricated by sulfurization of sputtered W films followed by immersing into HAuCl4 aqueous solution. The morphology, structure and AuNPs distribution have been characterized by electron microscopy. The decorated AuNPs can be more densely formed on the edge and defective sites of triangle WS2. We have compared the optical absorption and photoluminescence of bare WS2 and Au-decorated WS2 layers. Enhancement in the photoluminescence is observed in the Au-WS2 nano-composites, attributed to localized surface plasmonic effect. This work provides the possibility to develop photonic application in two-dimensional materials. | Publisher: | American Institute of Physics | Journal: | AIP advances | ISSN: | 2158-3226 (online) | DOI: | 10.1063/1.4923183 | Rights: | © 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License (https://creativecommons.org/licenses/by/3.0/). The following publication S. Y. Choi et al., AIP Advances 5, 067148 (2015) is available at https://dx.doi.org/10.1063/1.4923183 |
Appears in Collections: | Journal/Magazine Article |
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Choi_Enhancement_Few-layer_WS2.pdf | 4.46 MB | Adobe PDF | View/Open |
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