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Transport Properties of Methyl-Terminated Germanane Microcrystallites

Germanane is a two-dimensional material consisting of stacks of atomically thin germanium sheets. It’s easy and low-cost synthesis holds promise for the development of atomic-scale devices. However, to become an electronic-grade material, high-quality layered crystals with good chemical purity and s...

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Autores principales: Sciacca, Davide, Berthe, Maxime, Ryan, Bradley J., Peric, Nemanja, Deresmes, Dominique, Biadala, Louis, Boyaval, Christophe, Addad, Ahmed, Lancry, Ophélie, Makarem, Raghda, Legendre, Sébastien, Hocrelle, Didier, Panthani, Matthew G., Prévot, Geoffroy, Lhuillier, Emmanuel, Diener, Pascale, Grandidier, Bruno
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000464/
https://www.ncbi.nlm.nih.gov/pubmed/35407246
http://dx.doi.org/10.3390/nano12071128
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author Sciacca, Davide
Berthe, Maxime
Ryan, Bradley J.
Peric, Nemanja
Deresmes, Dominique
Biadala, Louis
Boyaval, Christophe
Addad, Ahmed
Lancry, Ophélie
Makarem, Raghda
Legendre, Sébastien
Hocrelle, Didier
Panthani, Matthew G.
Prévot, Geoffroy
Lhuillier, Emmanuel
Diener, Pascale
Grandidier, Bruno
author_facet Sciacca, Davide
Berthe, Maxime
Ryan, Bradley J.
Peric, Nemanja
Deresmes, Dominique
Biadala, Louis
Boyaval, Christophe
Addad, Ahmed
Lancry, Ophélie
Makarem, Raghda
Legendre, Sébastien
Hocrelle, Didier
Panthani, Matthew G.
Prévot, Geoffroy
Lhuillier, Emmanuel
Diener, Pascale
Grandidier, Bruno
author_sort Sciacca, Davide
collection PubMed
description Germanane is a two-dimensional material consisting of stacks of atomically thin germanium sheets. It’s easy and low-cost synthesis holds promise for the development of atomic-scale devices. However, to become an electronic-grade material, high-quality layered crystals with good chemical purity and stability are needed. To this end, we studied the electrical transport of annealed methyl-terminated germanane microcrystallites in both high vacuum and ultrahigh vacuum. Scanning electron microscopy of crystallites revealed two types of behavior which arise from the difference in the crystallite chemistry. While some crystallites are hydrated and oxidized, preventing the formation of good electrical contact, the four-point resistance of oxygen-free crystallites was measured with multiple tips scanning tunneling microscopy, yielding a bulk transport with resistivity smaller than 1 Ω·cm. When normalized by the crystallite thickness, the resistance compares well with the resistance of hydrogen-passivated germanane flakes found in the literature. Along with the high purity of the crystallites, a thermal stability of the resistance at 280 °C makes methyl-terminated germanane suitable for complementary metal oxide semiconductor back-end-of-line processes.
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spelling pubmed-90004642022-04-12 Transport Properties of Methyl-Terminated Germanane Microcrystallites Sciacca, Davide Berthe, Maxime Ryan, Bradley J. Peric, Nemanja Deresmes, Dominique Biadala, Louis Boyaval, Christophe Addad, Ahmed Lancry, Ophélie Makarem, Raghda Legendre, Sébastien Hocrelle, Didier Panthani, Matthew G. Prévot, Geoffroy Lhuillier, Emmanuel Diener, Pascale Grandidier, Bruno Nanomaterials (Basel) Article Germanane is a two-dimensional material consisting of stacks of atomically thin germanium sheets. It’s easy and low-cost synthesis holds promise for the development of atomic-scale devices. However, to become an electronic-grade material, high-quality layered crystals with good chemical purity and stability are needed. To this end, we studied the electrical transport of annealed methyl-terminated germanane microcrystallites in both high vacuum and ultrahigh vacuum. Scanning electron microscopy of crystallites revealed two types of behavior which arise from the difference in the crystallite chemistry. While some crystallites are hydrated and oxidized, preventing the formation of good electrical contact, the four-point resistance of oxygen-free crystallites was measured with multiple tips scanning tunneling microscopy, yielding a bulk transport with resistivity smaller than 1 Ω·cm. When normalized by the crystallite thickness, the resistance compares well with the resistance of hydrogen-passivated germanane flakes found in the literature. Along with the high purity of the crystallites, a thermal stability of the resistance at 280 °C makes methyl-terminated germanane suitable for complementary metal oxide semiconductor back-end-of-line processes. MDPI 2022-03-29 /pmc/articles/PMC9000464/ /pubmed/35407246 http://dx.doi.org/10.3390/nano12071128 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 Article
Sciacca, Davide
Berthe, Maxime
Ryan, Bradley J.
Peric, Nemanja
Deresmes, Dominique
Biadala, Louis
Boyaval, Christophe
Addad, Ahmed
Lancry, Ophélie
Makarem, Raghda
Legendre, Sébastien
Hocrelle, Didier
Panthani, Matthew G.
Prévot, Geoffroy
Lhuillier, Emmanuel
Diener, Pascale
Grandidier, Bruno
Transport Properties of Methyl-Terminated Germanane Microcrystallites
title Transport Properties of Methyl-Terminated Germanane Microcrystallites
title_full Transport Properties of Methyl-Terminated Germanane Microcrystallites
title_fullStr Transport Properties of Methyl-Terminated Germanane Microcrystallites
title_full_unstemmed Transport Properties of Methyl-Terminated Germanane Microcrystallites
title_short Transport Properties of Methyl-Terminated Germanane Microcrystallites
title_sort transport properties of methyl-terminated germanane microcrystallites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000464/
https://www.ncbi.nlm.nih.gov/pubmed/35407246
http://dx.doi.org/10.3390/nano12071128
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