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Open AccessArticle

Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe2 Nanosheets

1
Research Group on Carbon Nanostructures (CARBONNAGe), University of Namur, 61 Rue de Bruxelles, 5000 Namur, Belgium
2
Laboratoire Interdisciplinaire de Spectroscopie Electronique (LISE), Namur Institute of Structured Matter (NISM), University of Namur, 61 Rue de Bruxelles, 5000 Namur, Belgium
3
Chimie des Interactions Plasma–Surface (ChIPS), Research Institute for Materials Science and Engineering, Université de Mons, 7000 Mons, Belgium
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(3), 874; https://doi.org/10.3390/app10030874
Received: 24 December 2019 / Revised: 21 January 2020 / Accepted: 22 January 2020 / Published: 27 January 2020
(This article belongs to the Special Issue State of the Art of Nanosciences in Belgium)
Here, we report on the synthesis of tungsten diselenide (WSe2) nanosheets using an atmospheric pressure chemical vapor deposition technique via the rapid selenization of thin tungsten films. The morphology and the structure, as well as the optical properties, of the so-produced material have been studied using electron microscopies, X-ray photoelectron spectroscopy, photoluminescence, UV–visible and Raman spectroscopies, and X-ray diffraction. These studies confirmed the high crystallinity, quality, purity, and orientation of the WSe2 nanosheets, in addition to the unexpected presence of mixed phases, instead of only the most thermodynamically stable 2H phase. The synthesized material might be useful for applications such as gas sensing or for hydrogen evolution reaction catalysis. View Full-Text
Keywords: tungsten diselenide; nanosheets; chemical vapor deposition tungsten diselenide; nanosheets; chemical vapor deposition
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MDPI and ACS Style

Sierra-Castillo, A.; Haye, E.; Acosta, S.; Bittencourt, C.; Colomer, J.-F. Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe2 Nanosheets. Appl. Sci. 2020, 10, 874. https://doi.org/10.3390/app10030874

AMA Style

Sierra-Castillo A, Haye E, Acosta S, Bittencourt C, Colomer J-F. Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe2 Nanosheets. Applied Sciences. 2020; 10(3):874. https://doi.org/10.3390/app10030874

Chicago/Turabian Style

Sierra-Castillo, Ayrton; Haye, Emile; Acosta, Selene; Bittencourt, Carla; Colomer, J.-F. 2020. "Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe2 Nanosheets" Appl. Sci. 10, no. 3: 874. https://doi.org/10.3390/app10030874

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