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http://dx.doi.org/10.5207/JIEIE.2016.30.1.001

Study on Current Switching in Electronic Devices Based on Vanadium Dioxide Thin Films Using CO2 Laser  

Kim, Jihoon (Pukyong National University, School of Electrical Engineering)
Lee, Yong Wook (Pukyong National University, School of Electrical Engineering, Pukyong National University, Interdisciplinary Program of Biomedical Mechanical & Electrical Engineering)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.30, no.1, 2016 , pp. 1-7 More about this Journal
Abstract
With a collimated $CO_2$ laser beam, the bidirectional current switching was realized in a two-terminal electronic device based on a highly resistive vanadium dioxide($VO_2$) thin film. A $VO_2$ thin film was grown on a $Al_2O_3$ substrate by a pulsed laser deposition method. For the fabrication of a two-terminal electronic device, the $VO_2$ thin film was etched by an ion beam-assisted milling method, and the $VO_2$ device, of which $VO_2$ patch width and electrode separation were 50 and $100{\mu}m$, respectively, was fabricated through a photolithographic method. A bias voltage range for stable bidirectional current switching was found by using the current-voltage property of the device measured in a current-controlled mode. The transient responses of bidirectionally switched currents were analyzed when the laser was modulated at a variety of pulse widths and repetition rates. A switching contrast was measured as ~3333, and rising and falling times were measured as ~39 and ~21ms, respectively.
Keywords
Vanadium dioxide; Thin film; Metal-insulator transition; Switching; $CO_2$ laser;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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