Issue 33, 2017

van der Waals heterostructures based on allotropes of phosphorene and MoSe2

Abstract

The van der Waals heterostructures of allotropes of phosphorene (α- and β-P) with MoSe2 (H-, T-, ZT- and SO-MoSe2) are investigated in the framework of state-of-the-art density functional theory. The semiconducting heterostructures, β-P/H-MoSe2 and α-P/H-MoSe2, form anti-type structures with type I and type II band alignments, respectively, whose bands are tunable with an external electric field. α-P/ZT-MoSe2 and α-P/SO-MoSe2 form ohmic semiconductor–metal contacts while the Schottky barrier in β-P/T-MoSe2 can be reduced to zero by an external electric field to form ohmic contacts which is useful to realize high-performance devices. Simulated STM images of the given heterostructures reveal that α-P can be used as a capping layer to differentiate between various allotropes of underlying MoSe2. The dielectric response of the considered heterostructures is highly anisotropic in terms of lateral and vertical polarization. The tunable electronic and dielectric response of van der Waals phosphorene/MoSe2 heterostructures may find potential applications in the fabrication of optoelectronic devices.

Graphical abstract: van der Waals heterostructures based on allotropes of phosphorene and MoSe2

Supplementary files

Article information

Article type
Paper
Submitted
13 Jun 2017
Accepted
21 Jul 2017
First published
26 Jul 2017

Phys. Chem. Chem. Phys., 2017,19, 22023-22032

van der Waals heterostructures based on allotropes of phosphorene and MoSe2

S. Kaur, A. Kumar, S. Srivastava and K. Tankeshwar, Phys. Chem. Chem. Phys., 2017, 19, 22023 DOI: 10.1039/C7CP03960C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements