Uncovering topographically hidden features in 2D MoSe2 with correlated potential and optical nanoprobes

Abstract Developing characterization strategies to better understand nanoscale features in two-dimensional nanomaterials is of crucial importance, as the properties of these materials are many times driven by nanoscale and microscale chemical and structural modifications within the material. For the...

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Autores principales:	David Moore, Kiyoung Jo, Christine Nguyen, Jun Lou, Christopher Muratore, Deep Jariwala, Nicholas R. Glavin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/43c3a04a5c964d9dafd0634997b2d2fc
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spelling	oai:doaj.org-article:43c3a04a5c964d9dafd0634997b2d2fc2021-12-02T16:00:44ZUncovering topographically hidden features in 2D MoSe2 with correlated potential and optical nanoprobes10.1038/s41699-020-00178-w2397-7132https://doaj.org/article/43c3a04a5c964d9dafd0634997b2d2fc2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41699-020-00178-whttps://doaj.org/toc/2397-7132Abstract Developing characterization strategies to better understand nanoscale features in two-dimensional nanomaterials is of crucial importance, as the properties of these materials are many times driven by nanoscale and microscale chemical and structural modifications within the material. For the case of large area monolayer MoSe2 flakes, kelvin probe force microscopy coupled with tip-enhanced photoluminescence was utilized to evaluate such features including internal grain boundaries, edge effects, bilayer contributions, and effects of oxidation/aging, many of which are invisible to topographical mapping. A reduction in surface potential due to n-type behavior was observed at the edge of the flakes as well as near grain boundaries. Potential phase mapping, which corresponds to the local dielectric constant, depicted local biexciton and trion states in optically-active regions of interest such as grain boundaries. Finally, nanoscale surface potential and photoluminescence mapping was performed at several stages of oxidation, revealing that various oxidative states can be evaluated during the aging process. Importantly, all of the characterization performed in this study was non-destructive and rapid, crucial for quality evaluation of an exciting class of two-dimensional nanomaterials.David MooreKiyoung JoChristine NguyenJun LouChristopher MuratoreDeep JariwalaNicholas R. GlavinNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ChemistryQD1-999ENnpj 2D Materials and Applications, Vol 4, Iss 1, Pp 1-7 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999 David Moore Kiyoung Jo Christine Nguyen Jun Lou Christopher Muratore Deep Jariwala Nicholas R. Glavin Uncovering topographically hidden features in 2D MoSe2 with correlated potential and optical nanoprobes
description	Abstract Developing characterization strategies to better understand nanoscale features in two-dimensional nanomaterials is of crucial importance, as the properties of these materials are many times driven by nanoscale and microscale chemical and structural modifications within the material. For the case of large area monolayer MoSe2 flakes, kelvin probe force microscopy coupled with tip-enhanced photoluminescence was utilized to evaluate such features including internal grain boundaries, edge effects, bilayer contributions, and effects of oxidation/aging, many of which are invisible to topographical mapping. A reduction in surface potential due to n-type behavior was observed at the edge of the flakes as well as near grain boundaries. Potential phase mapping, which corresponds to the local dielectric constant, depicted local biexciton and trion states in optically-active regions of interest such as grain boundaries. Finally, nanoscale surface potential and photoluminescence mapping was performed at several stages of oxidation, revealing that various oxidative states can be evaluated during the aging process. Importantly, all of the characterization performed in this study was non-destructive and rapid, crucial for quality evaluation of an exciting class of two-dimensional nanomaterials.
format	article
author	David Moore Kiyoung Jo Christine Nguyen Jun Lou Christopher Muratore Deep Jariwala Nicholas R. Glavin
author_facet	David Moore Kiyoung Jo Christine Nguyen Jun Lou Christopher Muratore Deep Jariwala Nicholas R. Glavin
author_sort	David Moore
title	Uncovering topographically hidden features in 2D MoSe2 with correlated potential and optical nanoprobes
title_short	Uncovering topographically hidden features in 2D MoSe2 with correlated potential and optical nanoprobes
title_full	Uncovering topographically hidden features in 2D MoSe2 with correlated potential and optical nanoprobes
title_fullStr	Uncovering topographically hidden features in 2D MoSe2 with correlated potential and optical nanoprobes
title_full_unstemmed	Uncovering topographically hidden features in 2D MoSe2 with correlated potential and optical nanoprobes
title_sort	uncovering topographically hidden features in 2d mose2 with correlated potential and optical nanoprobes
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/43c3a04a5c964d9dafd0634997b2d2fc
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Uncovering topographically hidden features in 2D MoSe2 with correlated potential and optical nanoprobes

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