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Experimental study for selection of electrode material for ZnO-based memristors

DSpace at IIT Bombay

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Title Experimental study for selection of electrode material for ZnO-based memristors
 
Creator KUMAR, A
BAGHINI, MS
 
Description The fabrication and characterisation of 400 nm-thick zinc oxide (ZnO)-based memristor devices with platinum (Pt), chromium (Cr) and gold (Au) metal electrodes are presented. The effect of these electrode materials on the performance of ZnO-based memristors has been experimentally studied. Metal/ZnO contact limits the memristor switching mechanism, dominating during the resistive switching. It is observed that the ZnO-based memristor with the Pt electrode shows a better hysteresis compared to Cr and Au metal electrodes. In the case of the Pt electrode, a current ratio of six times in magnitude is observed between the high resistive state and low resistive state at 1 V, where a maximum current density value of 1.25 A/cm(2) is measured. The capacitance of these devices strongly depends on the charge distributed on the surface. Therefore, the capacitance-voltage (C-V) behaviour can be used to understand the charge distribution, under various bias conditions. The C-V behaviour of the Pt memristor, so as to understand the contact interface, where the maximum capacitance of 2.3 x 10(-7) F/cm(2) is obtained at 0 V, is also explained.
 
Publisher INST ENGINEERING TECHNOLOGY-IET
 
Date 2014-12-28T11:26:55Z
2014-12-28T11:26:55Z
2014
 
Type Article
 
Identifier ELECTRONICS LETTERS, 50(21)1547-1548
0013-5194
1350-911X
http://dx.doi.org/10.1049/el.2014.1491
http://dspace.library.iitb.ac.in/jspui/handle/100/16356
 
Language English