Jump to main content
Jump to site search


Two-dimensional pentagonal CrX (X = S, Se or Te) monolayers: Antiferromagnetic semiconductors for spintronics and photocatalysts

Abstract

Two dimensional (2D) materials with hexagonal building blocks have received tremendous interests in the past years and show promising as nanoscale devices for versatile applications. Herein, we propose a new family of 2D pentagonal CrX (X = S, Se or Te) monolayers (penta-CrX) for their applications into electronics, spintronics and photocatalysis. We find that the 2D penta-CrX monolayers are thermally, structurally and mechanically stable. The penta-CrX monolayers are antiferromagnetic and semiconducting. We show that the magnetism is attributed to super-exchange induced by the ionic interactions among the Cr and X atoms and can be enhanced upon applying tension. We further show that the penta-CrS and penta-CrSe monolayers show good redox potentials versus normal hydrogen electrode, and their band gaps are comparable to the energy of photon in the visible light region, indicating their capable of maximal utilization of solar energy for water splitting. With intrinsic semiconducting and controllable magnetic properties, the proposed penta-CrX monolayers may hold promising as flexible spintronics and photocatalysts.

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Apr 2018, accepted on 12 Jun 2018 and first published on 12 Jun 2018


Article type: Paper
DOI: 10.1039/C8CP02470G
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
  •   Request permissions

    Two-dimensional pentagonal CrX (X = S, Se or Te) monolayers: Antiferromagnetic semiconductors for spintronics and photocatalysts

    W. Chen, Y. Kawazoe, X. Shi and H. Pan, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C8CP02470G

Search articles by author

Spotlight

Advertisements