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Tin Diselenide (SnSe(2)) Van der Waals Semiconductor: Surface Chemical Reactivity, Ambient Stability, Chemical and Optical Sensors

Tin diselenide (SnSe(2)) is a layered semiconductor with broad application capabilities in the fields of energy storage, photocatalysis, and photodetection. Here, we correlate the physicochemical properties of this van der Waals semiconductor to sensing applications for detecting chemical species (c...

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Autores principales: D’Olimpio, Gianluca, Farias, Daniel, Kuo, Chia-Nung, Ottaviano, Luca, Lue, Chin Shan, Boukhvalov, Danil W., Politano, Antonio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8838464/
https://www.ncbi.nlm.nih.gov/pubmed/35161097
http://dx.doi.org/10.3390/ma15031154
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author D’Olimpio, Gianluca
Farias, Daniel
Kuo, Chia-Nung
Ottaviano, Luca
Lue, Chin Shan
Boukhvalov, Danil W.
Politano, Antonio
author_facet D’Olimpio, Gianluca
Farias, Daniel
Kuo, Chia-Nung
Ottaviano, Luca
Lue, Chin Shan
Boukhvalov, Danil W.
Politano, Antonio
author_sort D’Olimpio, Gianluca
collection PubMed
description Tin diselenide (SnSe(2)) is a layered semiconductor with broad application capabilities in the fields of energy storage, photocatalysis, and photodetection. Here, we correlate the physicochemical properties of this van der Waals semiconductor to sensing applications for detecting chemical species (chemosensors) and millimeter waves (terahertz photodetectors) by combining experiments of high-resolution electron energy loss spectroscopy and X-ray photoelectron spectroscopy with density functional theory. The response of the pristine, defective, and oxidized SnSe(2) surface towards H(2), H(2)O, H(2)S, NH(3), and NO(2) analytes was investigated. Furthermore, the effects of the thickness were assessed for monolayer, bilayer, and bulk samples of SnSe(2). The formation of a sub-nanometric SnO(2) skin over the SnSe(2) surface (self-assembled SnO(2)/SnSe(2) heterostructure) corresponds to a strong adsorption of all analytes. The formation of non-covalent bonds between SnO(2) and analytes corresponds to an increase of the magnitude of the transferred charge. The theoretical model nicely fits experimental data on gas response to analytes, validating the SnO(2)/SnSe(2) heterostructure as a suitable playground for sensing of noxious gases, with sensitivities of 0.43, 2.13, 0.11, 1.06 [ppm](−1) for H(2), H(2)S, NH(3), and NO(2,) respectively. The corresponding limit of detection is 5 ppm, 10 ppb, 250 ppb, and 400 ppb for H(2), H(2)S, NH(3), and NO(2,) respectively. Furthermore, SnSe(2)-based sensors are also suitable for fast large-area imaging applications at room temperature for millimeter waves in the THz range.
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spelling pubmed-88384642022-02-13 Tin Diselenide (SnSe(2)) Van der Waals Semiconductor: Surface Chemical Reactivity, Ambient Stability, Chemical and Optical Sensors D’Olimpio, Gianluca Farias, Daniel Kuo, Chia-Nung Ottaviano, Luca Lue, Chin Shan Boukhvalov, Danil W. Politano, Antonio Materials (Basel) Review Tin diselenide (SnSe(2)) is a layered semiconductor with broad application capabilities in the fields of energy storage, photocatalysis, and photodetection. Here, we correlate the physicochemical properties of this van der Waals semiconductor to sensing applications for detecting chemical species (chemosensors) and millimeter waves (terahertz photodetectors) by combining experiments of high-resolution electron energy loss spectroscopy and X-ray photoelectron spectroscopy with density functional theory. The response of the pristine, defective, and oxidized SnSe(2) surface towards H(2), H(2)O, H(2)S, NH(3), and NO(2) analytes was investigated. Furthermore, the effects of the thickness were assessed for monolayer, bilayer, and bulk samples of SnSe(2). The formation of a sub-nanometric SnO(2) skin over the SnSe(2) surface (self-assembled SnO(2)/SnSe(2) heterostructure) corresponds to a strong adsorption of all analytes. The formation of non-covalent bonds between SnO(2) and analytes corresponds to an increase of the magnitude of the transferred charge. The theoretical model nicely fits experimental data on gas response to analytes, validating the SnO(2)/SnSe(2) heterostructure as a suitable playground for sensing of noxious gases, with sensitivities of 0.43, 2.13, 0.11, 1.06 [ppm](−1) for H(2), H(2)S, NH(3), and NO(2,) respectively. The corresponding limit of detection is 5 ppm, 10 ppb, 250 ppb, and 400 ppb for H(2), H(2)S, NH(3), and NO(2,) respectively. Furthermore, SnSe(2)-based sensors are also suitable for fast large-area imaging applications at room temperature for millimeter waves in the THz range. MDPI 2022-02-02 /pmc/articles/PMC8838464/ /pubmed/35161097 http://dx.doi.org/10.3390/ma15031154 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
D’Olimpio, Gianluca
Farias, Daniel
Kuo, Chia-Nung
Ottaviano, Luca
Lue, Chin Shan
Boukhvalov, Danil W.
Politano, Antonio
Tin Diselenide (SnSe(2)) Van der Waals Semiconductor: Surface Chemical Reactivity, Ambient Stability, Chemical and Optical Sensors
title Tin Diselenide (SnSe(2)) Van der Waals Semiconductor: Surface Chemical Reactivity, Ambient Stability, Chemical and Optical Sensors
title_full Tin Diselenide (SnSe(2)) Van der Waals Semiconductor: Surface Chemical Reactivity, Ambient Stability, Chemical and Optical Sensors
title_fullStr Tin Diselenide (SnSe(2)) Van der Waals Semiconductor: Surface Chemical Reactivity, Ambient Stability, Chemical and Optical Sensors
title_full_unstemmed Tin Diselenide (SnSe(2)) Van der Waals Semiconductor: Surface Chemical Reactivity, Ambient Stability, Chemical and Optical Sensors
title_short Tin Diselenide (SnSe(2)) Van der Waals Semiconductor: Surface Chemical Reactivity, Ambient Stability, Chemical and Optical Sensors
title_sort tin diselenide (snse(2)) van der waals semiconductor: surface chemical reactivity, ambient stability, chemical and optical sensors
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8838464/
https://www.ncbi.nlm.nih.gov/pubmed/35161097
http://dx.doi.org/10.3390/ma15031154
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