Issue 3, 2016

Facial synthesis of KCu7S4 nanobelts for nonvolatile memory device applications

Abstract

Tetragonal KCu7S4 nanobelts (NBs) with width of 200–600 nm and length of up to hundreds of micrometers were facially synthesized via a solution-based method. Electrical analysis reveals that the as-fabricated NB exhibits typical p-type semiconducting characteristics with an exceptionally high carrier mobility of ∼870 cm2 V−1 s−1, which may be attributed to the quasi-1D conduction path along the c axis in the structure of KCu7S4. A further study of a device based on the Cu/KCu7S4 NB/Au Schottky junction shows a stable memory behavior with a set voltage of about 0.6 V, a current ON/OFF ratio of about 104, and a retention time >104 s. Such resistive switching characteristics, according to our analysis are due to the interfacial oxide layers that can efficiently trap the electrons by the oxygen vacancies. This study will offer opportunities for the development of high-performance memory devices with new geometries.

Graphical abstract: Facial synthesis of KCu7S4 nanobelts for nonvolatile memory device applications

Article information

Article type
Paper
Submitted
17 noy 2015
Accepted
14 dek 2015
First published
15 dek 2015

J. Mater. Chem. C, 2016,4, 589-595

Author version available

Facial synthesis of KCu7S4 nanobelts for nonvolatile memory device applications

C. Wu, X. Wang, Z. Pan, Y. Wang, Y. Yu, L. Wang and L. Luo, J. Mater. Chem. C, 2016, 4, 589 DOI: 10.1039/C5TC03829D

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