Engineering electrodeposited ZnO films and their memristive switching performance

Zoolfakar, Ahmad Sabirin, Ab Kadir, Rosmalini, Rani, Rozina Abdul, Balendhran, Sivacarendran, Liu, Xinjun, Kats, Eugene, Bhargava, Suresh K., Bhaskaran, Madhu, Sriram, Sharath, Zhuiykov, Serge, O'Mullane, Anthony P., & Kalantar-zadeh, Kourosh (2013) Engineering electrodeposited ZnO films and their memristive switching performance. Physical Chemistry Chemical Physics, 15(23), pp. 10376-10384.

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Abstract

We report the influence of zinc oxide (ZnO) seed layers on the performance of ZnO-based memristive devices fabricated using an electrodeposition approach. The memristive element is based on a sandwich structure using Ag and Pt electrodes. The ZnO seed layer is employed to tune the morphology of the electrodeposited ZnO films in order to increase the grain boundary density as well as construct highly ordered arrangements of grain boundaries. Additionally, the seed layer also assists in optimizing the concentration of oxygen vacancies in the films. The fabricated devices exhibit memristive switching behaviour with symmetrical and asymmetrical hysteresis loops in the absence and presence of ZnO seed layers, respectively. A modest concentration of oxygen vacancy in electrodeposited ZnO films as well as an increase in the ordered arrangement of grain boundaries leads to higher switching ratios in Ag/ZnO/Pt devices.

Impact and interest:

21 citations in Scopus
20 citations in Web of Science®
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ID Code: 64338
Item Type: Journal Article
Refereed: Yes
DOI: 10.1039/C3CP44451A
ISSN: 1463-9076
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 18 Nov 2013 03:58
Last Modified: 19 Jul 2017 20:02

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