https://doi.org/10.1051/epjap/2015150347
Influence of the silver oxidation on the resistive switching in Ag/AgOx/WO3-x/Pt heterostructures
1
Department of Basic Science, North China Institute of Aerospace Engineering, 065000
Langfang, P.R. China
2
Hebei Advanced Thin Film Laboratory, Department of Physics, Hebei Normal University, 050024
Shijiazhuang, P.R. China
3
Department of Physics and Electrical Engineering, Handan College, 056005
Handan, P.R. China
4
Hebei Vocational College of Rail Transportation, 50051
Shijiazhuang, P.R. China
a e-mail: 1985dongchunying@163.com
Received:
11
July
2015
Revised:
13
November
2015
Accepted:
13
November
2015
Published online:
18
December
2015
Silver is usually considered as an inert material and is most commonly used as an electrode. In this work, however, we demonstrate that silver can be easily oxidized during preparation. The influence of the silver oxidation on the resistive switching (RS) effect of the Ag/AgOx/WO3-x/Pt heterostructures was systematically investigated. The heterostructure in which the AgOx film was deposited under an oxygen pressure of 5 × 10−4 Pa showed a linear current-voltage relationship (Ohmic contact). The heterostructures in which the AgOx films were deposited under oxygen pressures of 10 and 100 Pa showed a typical interface RS effect with rectification. In combination with the analysis of the dependence of high-resistance-state (HRS) on RESET current and RESET voltage under different compliance currents, we inferred that the electrochemical redox reaction of the silver oxide is responsible for the RS effect in Ag/AgOx/WO3-x/Pt heterostructures.
© EDP Sciences, 2015
