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Open AccessArticle

Electrophoretic Deposition of WS2 Flakes on Nanoholes Arrays—Role of Used Suspension Medium

1
Dipartimento di Chimica, Università degli Studi di Padova, Via Marzolo 1, 35131 Padova, Italy
2
EMPA Federal Swiss research Institute, 9014 St. Gallen, Switzerland
3
Physics and Materials Science Research Unit, University of Luxembourg, L-1511 Luxembourg, Luxembourg
4
Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
*
Author to whom correspondence should be addressed.
Materials 2019, 12(20), 3286; https://doi.org/10.3390/ma12203286
Received: 23 September 2019 / Revised: 5 October 2019 / Accepted: 8 October 2019 / Published: 10 October 2019
(This article belongs to the Section Advanced Nanomaterials)
Here we optimized the electrophoretic deposition process for the fabrication of WS2 plasmonic nanohole integrated structures. We showed how the conditions used for site-selective deposition influenced the properties of the deposited flakes. In particular, we investigated the effect of different suspension buffers used during the deposition both in the efficiency of the process and in the stability of WS2 flakes, which were deposited on an ordered arrays of plasmonic nanostructures. We observed that a proper buffer can significantly facilitate the deposition process, keeping the material stable with respect to oxidation and contamination. Moreover, the integrated plasmonic structures that can be prepared with this process can be applied to enhanced spectroscopies and for the preparation of 2D nanopores. View Full-Text
Keywords: WS2; nanopores; integrated systems; electrophoretic deposition; plasmonics; photoluminescence; Raman spectroscopy WS2; nanopores; integrated systems; electrophoretic deposition; plasmonics; photoluminescence; Raman spectroscopy
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Mosconi, D.; Giovannini, G.; Maccaferri, N.; Serri, M.; Agnoli, S.; Garoli, D. Electrophoretic Deposition of WS2 Flakes on Nanoholes Arrays—Role of Used Suspension Medium. Materials 2019, 12, 3286.

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