Continuous‐Flow Synthesis of High‐Quality Few‐Layer Antimonene Hexagons
Íñigo Torres, Marta Alcaraz, Roger Sanchis‐Gual, Jose A. Carrasco, Michael Fickert, Mhamed Assebban, Carlos Gibaja, Christian Dölle, Diego A. Aldave, Cristina Gómez‐Navarro, Elena Salagre, E. G. Michel, M. Varela, Julio Gómez‐Herrero, Gonzalo Abellán, Félix Zamora
Abstract
Abstract 2D materials show outstanding properties that can bring many applications in different technological fields. However, their uses are still limited by production methods. In this context, antimonene is recently suggested as a new 2D material to fabricate different (opto)electronic devices, among other potential applications. This work focuses on optimizing the synthetic parameters to produce high‐quality antimonene hexagons and their implementation in a large‐scale manufacturing procedure. By means of a continuous‐flow synthesis, few‐layer antimonene hexagons with ultra‐large lateral dimensions (up to several microns) and a few nanometers thick are isolated. The suitable chemical post‐treatment of these nanolayers with chloroform gives rise to antimonene surfaces showing low oxidation that can be easily contacted with microelectrodes. Therefore, the reported procedure offers a way to solve two critical problems for using antimonene in many applications: large‐scale preparation of high‐quality antimonene and the ability to set electrical contacts useful for device fabrication.