Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe<sub>2</sub> Nanosheets

Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe<sub>2</sub> Nanosheets

Here, we report on the synthesis of tungsten diselenide (WSe<sub>2</sub>) 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-produce...

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Main Authors: Ayrton Sierra-Castillo, Emile Haye, Selene Acosta, Carla Bittencourt, J.-F. Colomer
Format: Article
Language:English
Published: MDPI AG 2020-01-01
Series:Applied Sciences
Subjects:
tungsten diselenide
nanosheets
chemical vapor deposition
Online Access:https://www.mdpi.com/2076-3417/10/3/874
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spelling doaj-60a62aef896f40a78f404f09c65a432b2020-11-25T02:05:26ZengMDPI AGApplied Sciences2076-34172020-01-0110387410.3390/app10030874app10030874Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe<sub>2</sub> NanosheetsAyrton Sierra-Castillo0Emile Haye1Selene Acosta2Carla Bittencourt3J.-F. Colomer4Research Group on Carbon Nanostructures (CARBONNAGe), University of Namur, 61 Rue de Bruxelles, 5000 Namur, BelgiumLaboratoire Interdisciplinaire de Spectroscopie Electronique (LISE), Namur Institute of Structured Matter (NISM), University of Namur, 61 Rue de Bruxelles, 5000 Namur, BelgiumChimie des Interactions Plasma–Surface (ChIPS), Research Institute for Materials Science and Engineering, Université de Mons, 7000 Mons, BelgiumChimie des Interactions Plasma–Surface (ChIPS), Research Institute for Materials Science and Engineering, Université de Mons, 7000 Mons, BelgiumResearch Group on Carbon Nanostructures (CARBONNAGe), University of Namur, 61 Rue de Bruxelles, 5000 Namur, BelgiumHere, we report on the synthesis of tungsten diselenide (WSe<sub>2</sub>) 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&#8722;visible and Raman spectroscopies, and X-ray diffraction. These studies confirmed the high crystallinity, quality, purity, and orientation of the WSe<sub>2</sub> 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.https://www.mdpi.com/2076-3417/10/3/874tungsten diselenidenanosheetschemical vapor deposition
collection DOAJ
language English
format Article
sources DOAJ
author Ayrton Sierra-Castillo
Emile Haye
Selene Acosta
Carla Bittencourt
J.-F. Colomer
spellingShingle Ayrton Sierra-Castillo
Emile Haye
Selene Acosta
Carla Bittencourt
J.-F. Colomer
Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe<sub>2</sub> Nanosheets
Applied Sciences
tungsten diselenide
nanosheets
chemical vapor deposition
author_facet Ayrton Sierra-Castillo
Emile Haye
Selene Acosta
Carla Bittencourt
J.-F. Colomer
author_sort Ayrton Sierra-Castillo
title Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe<sub>2</sub> Nanosheets
title_short Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe<sub>2</sub> Nanosheets
title_full Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe<sub>2</sub> Nanosheets
title_fullStr Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe<sub>2</sub> Nanosheets
title_full_unstemmed Synthesis and Characterization of Highly Crystalline Vertically Aligned WSe<sub>2</sub> Nanosheets
title_sort synthesis and characterization of highly crystalline vertically aligned wse<sub>2</sub> nanosheets
publisher MDPI AG
series Applied Sciences
issn 2076-3417
publishDate 2020-01-01
description Here, we report on the synthesis of tungsten diselenide (WSe<sub>2</sub>) 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&#8722;visible and Raman spectroscopies, and X-ray diffraction. These studies confirmed the high crystallinity, quality, purity, and orientation of the WSe<sub>2</sub> 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.
topic tungsten diselenide
nanosheets
chemical vapor deposition
url https://www.mdpi.com/2076-3417/10/3/874
work_keys_str_mv AT ayrtonsierracastillo synthesisandcharacterizationofhighlycrystallineverticallyalignedwsesub2subnanosheets
AT emilehaye synthesisandcharacterizationofhighlycrystallineverticallyalignedwsesub2subnanosheets
AT seleneacosta synthesisandcharacterizationofhighlycrystallineverticallyalignedwsesub2subnanosheets
AT carlabittencourt synthesisandcharacterizationofhighlycrystallineverticallyalignedwsesub2subnanosheets
AT jfcolomer synthesisandcharacterizationofhighlycrystallineverticallyalignedwsesub2subnanosheets
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