Cargando…
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...
Autores principales: | , , , , , , , , , , , , , , , , |
---|---|
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 |
_version_ | 1784685441912406016 |
---|---|
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. |
format | Online Article Text |
id | pubmed-9000464 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT sciaccadavide transportpropertiesofmethylterminatedgermananemicrocrystallites AT berthemaxime transportpropertiesofmethylterminatedgermananemicrocrystallites AT ryanbradleyj transportpropertiesofmethylterminatedgermananemicrocrystallites AT pericnemanja transportpropertiesofmethylterminatedgermananemicrocrystallites AT deresmesdominique transportpropertiesofmethylterminatedgermananemicrocrystallites AT biadalalouis transportpropertiesofmethylterminatedgermananemicrocrystallites AT boyavalchristophe transportpropertiesofmethylterminatedgermananemicrocrystallites AT addadahmed transportpropertiesofmethylterminatedgermananemicrocrystallites AT lancryophelie transportpropertiesofmethylterminatedgermananemicrocrystallites AT makaremraghda transportpropertiesofmethylterminatedgermananemicrocrystallites AT legendresebastien transportpropertiesofmethylterminatedgermananemicrocrystallites AT hocrelledidier transportpropertiesofmethylterminatedgermananemicrocrystallites AT panthanimatthewg transportpropertiesofmethylterminatedgermananemicrocrystallites AT prevotgeoffroy transportpropertiesofmethylterminatedgermananemicrocrystallites AT lhuillieremmanuel transportpropertiesofmethylterminatedgermananemicrocrystallites AT dienerpascale transportpropertiesofmethylterminatedgermananemicrocrystallites AT grandidierbruno transportpropertiesofmethylterminatedgermananemicrocrystallites |