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Exfoliation of Alpha-Germanium: A Covalent Diamond-Like Structure

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Exfoliation of Alpha-Germanium: A Covalent Diamond-Like Structure

dc.contributor.author	Gibaja, Carlos
dc.contributor.author	Rodríguez-San-Miguel, David
dc.contributor.author	Paz, Wendel S.
dc.contributor.author	Torres, Iñigo
dc.contributor.author	Salagre, Elena
dc.contributor.author	Segovia, Pilar
dc.contributor.author	Michel, Enrique G.
dc.contributor.author	Assebban, Mhamed
dc.contributor.author	Ares, Pablo
dc.contributor.author	Hernández-Maldonado, David
dc.contributor.author	Ramasse, Quentin
dc.contributor.author	Abellán Sáez, Gonzalo
dc.contributor.author	Gómez-Herrero, Julio
dc.contributor.author	Varela, Maria
dc.contributor.author	Palacios, Juan José
dc.contributor.author	Zamora, Félix
dc.date.accessioned	2021-06-02T16:46:57Z
dc.date.available	2021-06-02T16:46:57Z
dc.date.issued	2021
dc.identifier.citation	Gibaja, Carlos Rodríguez-San-Miguel, David Paz, Wendel S. Torres, Iñigo Salagre, Elena Segovia, Pilar Michel, Enrique G. Assebban, Mhamed Ares, Pablo Hernández-Maldonado, David Ramasse, Quentin Abellán Sáez, Gonzalo Gómez-Herrero, Julio Varela, Maria Palacios, Juan José Zamora, Félix 2021 Exfoliation of Alpha-Germanium: A Covalent Diamond-Like Structure Advanced Materials 33 10 2006826
dc.identifier.uri	https://hdl.handle.net/10550/79544
dc.description.abstract	2D materials have opened a new field in materials science with outstanding scientific and technological impact. A largely explored route for the preparation of 2D materials is the exfoliation of layered crystals with weak forces between their layers. However, its application to covalent crystals remains elusive. Herein, a further step is taken by introducing the exfoliation of germanium, a narrow-bandgap semiconductor presenting a 3D diamond-like structure with strong covalent bonds. Pure α-germanium is exfoliated following a simple one-step procedure assisted by wet ball-milling, allowing gram-scale fabrication of high-quality layers with large lateral dimensions and nanometer thicknesses. The generated flakes are thoroughly characterized by different techniques, giving evidence that the new 2D material exhibits bandgaps that depend on both the crystallographic direction and the number of layers. Besides potential technological applications, this work is also of interest for the search of 2D materials with new properties.
dc.language.iso	eng
dc.relation.ispartof	Advanced Materials, 2021, vol. 33, num. 10, p. 2006826
dc.subject	Materials
dc.title	Exfoliation of Alpha-Germanium: A Covalent Diamond-Like Structure
dc.type	journal article	es_ES
dc.date.updated	2021-06-02T16:46:57Z
dc.identifier.doi	10.1002/adma.202006826
dc.identifier.idgrec	146133
dc.rights.accessRights	open access	es_ES