Publisher : The Korean Institute of IIIuminating and Electrical Installation Engineers
DOI : 10.5207/JIEIE.2015.29.11.028
Title & Authors
Bidirectional Current Triggering in Two-Terminal Planar Device Based on Highly Resistive Vanadium Dioxide Thin Film Using 966nm Near Infrared Laser Kim, Jihoon; Lee, Yong Wook;
By incorporating a 966nm near infrared laser, we demonstrated bidirectional current triggering of between 0 and 10mA in a two-terminal planar device based on a highly resistive vanadium dioxide () thin film grown by a pulsed laser deposition method. A two-terminal planar device, which had an electrode separation of and a conducting layer, was fabricated through ion beam-assisted milling and photolithographic techniques. A bias voltage range for stable bidirectional current triggering was determined by investigating the current-voltage curves of the device in a current-controlled mode. Bidirectional current triggering of up to 10mA was realized by directly illuminating the film with a focused infrared laser beam, and the transient responses of triggered currents were analyzed when the laser was modulated at various pulse widths and repetition rates. A switching contrast between off- and on-state currents was evaluated as ~3571, and the rising and falling times were measured as ~40 and ~20ms, respectively.
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