Xie, S, Dey, A, Yan, W, Kudrynskyi, Z, Balakrishnan, N ORCID: https://orcid.org/0000-0002-7236-5477, Makarovsky, O, Kovalyuk, ZD, Castanon, E, Kolosov, OV, Wang, K and Patane, A (2021) Ferroelectric semiconductor junctions based on graphene/In2Se3/graphene van der Waals heterostructures. 2D Materials, 8 (045020). pp. 1-9.

[img]
Preview
Text
Xie+et+al_2021_2D_Mater._10.1088_2053-1583_ac1ada.pdf - Accepted Version

Download (1MB) | Preview
[img]
Preview
Text
Xie_2021_2D_Mater._8_045020.pdf - Published Version

Download (1MB) | Preview

Abstract

The miniaturization of ferroelectric devices offers prospects for non-volatile memories, low-power electrical switches and emerging technologies beyond existing Si-based integrated circuits. An emerging class of ferroelectrics is based on van der Waals (vdW) two-dimensional materials with potential for nano-ferroelectrics. Here, we report on ferroelectric semiconductor junctions (FSJs) in which the ferroelectric vdW semiconductor α-In2Se3 is embedded between two single-layer graphene electrodes. In these two-terminal devices, the ferroelectric polarization of the nanometre-thick In2Se3 layer modulates the transmission of electrons across the graphene/In2Se3 interface, leading to memristive effects that are controlled by applied voltages and/or by light. The underlying mechanisms of conduction are examined over a range of temperatures and under light excitation revealing thermionic injection, tunnelling and trap-assisted transport. These findings are relevant to future developments of FSJs whose geometry is well suited to miniaturization and low-power electronics, offering opportunities to expand functionalities of ferroelectrics by design of the vdW heterostructure.

Item Type: Article
Additional Information: Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Natural Sciences > School of Chemical and Physical Sciences
Depositing User: Symplectic
Date Deposited: 03 Sep 2021 08:55
Last Modified: 03 Sep 2021 08:55
URI: https://eprints.keele.ac.uk/id/eprint/9903

Actions (login required)

View Item View Item