Effects of Acetone Vapor on the Exciton Band Photoluminescence Emission from Single- and Few-Layer WS(2) on Template-Stripped Gold

Two-dimensional (2D) materials are being used widely for chemical sensing applications due to their large surface-to-volume ratio and photoluminescence (PL) emission and emission exciton band tunability. To better understand how the analyte affects the PL response for a model 2D platform, we used at...

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Detalles Bibliográficos
Autores principales: Matthews, Samantha, Zhao, Chuan, Zeng, Hao, Bright, Frank V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6514759/
https://www.ncbi.nlm.nih.gov/pubmed/31018501
http://dx.doi.org/10.3390/s19081913
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author Matthews, Samantha
Zhao, Chuan
Zeng, Hao
Bright, Frank V.
author_facet Matthews, Samantha
Zhao, Chuan
Zeng, Hao
Bright, Frank V.
author_sort Matthews, Samantha
collection PubMed
description Two-dimensional (2D) materials are being used widely for chemical sensing applications due to their large surface-to-volume ratio and photoluminescence (PL) emission and emission exciton band tunability. To better understand how the analyte affects the PL response for a model 2D platform, we used atomic force microscopy (AFM) and co-localized photoluminescence (PL) and Raman mapping to characterize tungsten disulfide (WS(2)) flakes on template-stripped gold (TSG) under acetone challenge. We determined the PL-based response from single- and few-layer WS(2) arises from three excitons (neutral, A(0); biexciton, AA; and the trion, A(−)). The A(0) exciton PL emission is the most strongly quenched by acetone whereas the A(−) PL emission exhibits an enhancement. We find the PL behavior is also WS(2) layer number dependent.
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spelling pubmed-65147592019-05-30 Effects of Acetone Vapor on the Exciton Band Photoluminescence Emission from Single- and Few-Layer WS(2) on Template-Stripped Gold Matthews, Samantha Zhao, Chuan Zeng, Hao Bright, Frank V. Sensors (Basel) Article Two-dimensional (2D) materials are being used widely for chemical sensing applications due to their large surface-to-volume ratio and photoluminescence (PL) emission and emission exciton band tunability. To better understand how the analyte affects the PL response for a model 2D platform, we used atomic force microscopy (AFM) and co-localized photoluminescence (PL) and Raman mapping to characterize tungsten disulfide (WS(2)) flakes on template-stripped gold (TSG) under acetone challenge. We determined the PL-based response from single- and few-layer WS(2) arises from three excitons (neutral, A(0); biexciton, AA; and the trion, A(−)). The A(0) exciton PL emission is the most strongly quenched by acetone whereas the A(−) PL emission exhibits an enhancement. We find the PL behavior is also WS(2) layer number dependent. MDPI 2019-04-23 /pmc/articles/PMC6514759/ /pubmed/31018501 http://dx.doi.org/10.3390/s19081913 Text en © 2019 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Matthews, Samantha
Zhao, Chuan
Zeng, Hao
Bright, Frank V.
Effects of Acetone Vapor on the Exciton Band Photoluminescence Emission from Single- and Few-Layer WS(2) on Template-Stripped Gold
title Effects of Acetone Vapor on the Exciton Band Photoluminescence Emission from Single- and Few-Layer WS(2) on Template-Stripped Gold
title_full Effects of Acetone Vapor on the Exciton Band Photoluminescence Emission from Single- and Few-Layer WS(2) on Template-Stripped Gold
title_fullStr Effects of Acetone Vapor on the Exciton Band Photoluminescence Emission from Single- and Few-Layer WS(2) on Template-Stripped Gold
title_full_unstemmed Effects of Acetone Vapor on the Exciton Band Photoluminescence Emission from Single- and Few-Layer WS(2) on Template-Stripped Gold
title_short Effects of Acetone Vapor on the Exciton Band Photoluminescence Emission from Single- and Few-Layer WS(2) on Template-Stripped Gold
title_sort effects of acetone vapor on the exciton band photoluminescence emission from single- and few-layer ws(2) on template-stripped gold
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6514759/
https://www.ncbi.nlm.nih.gov/pubmed/31018501
http://dx.doi.org/10.3390/s19081913
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