Exploring the Thickness-Dependence of the Properties of Layered Gallium Sulfide

Group III layered monochalcogenide gallium sulfide, GaS, is one of the latest additions to the two-dimensional (2D) materials family, and of particular interest for visible-UV optoelectronic applications due to its wide bandgap energy in the range 2.35–3.05 eV going from bulk to monolayer. Interesti...

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Main Authors:	Yael Gutiérrez, Maria M. Giangregorio, Stefano Dicorato, Fabio Palumbo, Maria Losurdo
Format:	article
Language:	EN
Published:	Frontiers Media S.A. 2021
Subjects:	layered GaS chalcogenides work function optical properties photoresistivity Chemistry QD1-999
Online Access:	https://doaj.org/article/d458514e943f4be5a71e9da3bcb979c0
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spelling	oai:doaj.org-article:d458514e943f4be5a71e9da3bcb979c02021-11-19T07:52:11ZExploring the Thickness-Dependence of the Properties of Layered Gallium Sulfide2296-264610.3389/fchem.2021.781467https://doaj.org/article/d458514e943f4be5a71e9da3bcb979c02021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fchem.2021.781467/fullhttps://doaj.org/toc/2296-2646Group III layered monochalcogenide gallium sulfide, GaS, is one of the latest additions to the two-dimensional (2D) materials family, and of particular interest for visible-UV optoelectronic applications due to its wide bandgap energy in the range 2.35–3.05 eV going from bulk to monolayer. Interestingly, when going to the few-layer regime, changes in the electronic structure occur, resulting in a change in the properties of the material. Therefore, a systematic study on the thickness dependence of the different properties of GaS is needed. Here, we analyze mechanically exfoliated GaS layers transferred to glass substrates. Specifically, we report the dependence of the Raman spectra, photoluminescence, optical transmittance, resistivity, and work function on the thickness of GaS. Those findings can be used as guidance in designing devices based on GaS.Yael GutiérrezMaria M. GiangregorioStefano DicoratoFabio PalumboMaria LosurdoFrontiers Media S.A.articlelayered GaSchalcogenideswork functionoptical propertiesphotoresistivityChemistryQD1-999ENFrontiers in Chemistry, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	layered GaS chalcogenides work function optical properties photoresistivity Chemistry QD1-999
spellingShingle	layered GaS chalcogenides work function optical properties photoresistivity Chemistry QD1-999 Yael Gutiérrez Maria M. Giangregorio Stefano Dicorato Fabio Palumbo Maria Losurdo Exploring the Thickness-Dependence of the Properties of Layered Gallium Sulfide
description	Group III layered monochalcogenide gallium sulfide, GaS, is one of the latest additions to the two-dimensional (2D) materials family, and of particular interest for visible-UV optoelectronic applications due to its wide bandgap energy in the range 2.35–3.05 eV going from bulk to monolayer. Interestingly, when going to the few-layer regime, changes in the electronic structure occur, resulting in a change in the properties of the material. Therefore, a systematic study on the thickness dependence of the different properties of GaS is needed. Here, we analyze mechanically exfoliated GaS layers transferred to glass substrates. Specifically, we report the dependence of the Raman spectra, photoluminescence, optical transmittance, resistivity, and work function on the thickness of GaS. Those findings can be used as guidance in designing devices based on GaS.
format	article
author	Yael Gutiérrez Maria M. Giangregorio Stefano Dicorato Fabio Palumbo Maria Losurdo
author_facet	Yael Gutiérrez Maria M. Giangregorio Stefano Dicorato Fabio Palumbo Maria Losurdo
author_sort	Yael Gutiérrez
title	Exploring the Thickness-Dependence of the Properties of Layered Gallium Sulfide
title_short	Exploring the Thickness-Dependence of the Properties of Layered Gallium Sulfide
title_full	Exploring the Thickness-Dependence of the Properties of Layered Gallium Sulfide
title_fullStr	Exploring the Thickness-Dependence of the Properties of Layered Gallium Sulfide
title_full_unstemmed	Exploring the Thickness-Dependence of the Properties of Layered Gallium Sulfide
title_sort	exploring the thickness-dependence of the properties of layered gallium sulfide
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/d458514e943f4be5a71e9da3bcb979c0
work_keys_str_mv	AT yaelgutierrez exploringthethicknessdependenceofthepropertiesoflayeredgalliumsulfide AT mariamgiangregorio exploringthethicknessdependenceofthepropertiesoflayeredgalliumsulfide AT stefanodicorato exploringthethicknessdependenceofthepropertiesoflayeredgalliumsulfide AT fabiopalumbo exploringthethicknessdependenceofthepropertiesoflayeredgalliumsulfide AT marialosurdo exploringthethicknessdependenceofthepropertiesoflayeredgalliumsulfide
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Exploring the Thickness-Dependence of the Properties of Layered Gallium Sulfide

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