Please use this identifier to cite or link to this item: https://doi.org/10.1021/nn204907t
Title: Symmetrical negative differential resistance behavior of a resistive switching device
Authors: Du, Y.
Pan, H.
Wang, S.
Wu, T.
Feng, Y.P. 
Pan, J.
Wee, A.T.S. 
Keywords: band gap state
charge storage
negative differential resistance
oxygen molecular ions
resistive switching
titanium dioxide
Issue Date: 27-Mar-2012
Citation: Du, Y., Pan, H., Wang, S., Wu, T., Feng, Y.P., Pan, J., Wee, A.T.S. (2012-03-27). Symmetrical negative differential resistance behavior of a resistive switching device. ACS Nano 6 (3) : 2517-2523. ScholarBank@NUS Repository. https://doi.org/10.1021/nn204907t
Abstract: With a thin insulator sandwiched between two electrodes, the negative differential resistance (NDR) behavior has been frequently reported for its potential device applications. Here we report the experimental observation of a symmetric NDR characteristic in a resistive switching device based on TiO 2. We propose a charge storage mechanism for the NDR effect, with oxygen molecular ions working as the active source, in a thin insulating layer. Current-voltage measurements demonstrated a highly reproducible state at about 0.65 eV, and the photoelectron spectroscopy measurements showed that it complies well with the Ti3d band gap state. Our first-principle calculations confirm that charge storage and release arise from trapping and detrapping of oxygen molecular ions at the defect sites. The results and mechanism demonstrated here in a thin layer could be extended to other systems approaching molecular dimensions for device applications. © 2012 American Chemical Society.
Source Title: ACS Nano
URI: http://scholarbank.nus.edu.sg/handle/10635/98160
ISSN: 19360851
DOI: 10.1021/nn204907t
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

63
checked on Jul 17, 2018

WEB OF SCIENCETM
Citations

62
checked on Jun 27, 2018

Page view(s)

28
checked on Jul 6, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.