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Abstract
A laser-triggered reversible current switching was demonstrated in electronic device based on vanadium dioxide (VO₂) thin film by using a CO₂ laser. The VO₂ thin film used in the two-terminal electronic device was grown on a sapphire (Al₂O₃) substrate by a pulsed laser deposition method. A simple series electrical circuit was constructed to investigate the current-voltage properties of the VO₂-based electronic device and reversible current switching operations were examined with various bias voltages. Laser-triggered reversible current switching of up to 55mA was achieved by focused laser beam illumination directly onto the VO₂ device. The transient response of the currents flowing through the device was investigated when the laser illuminates the device at repetition rates of up to 2.0Hz. A switching contrast between off-state and on-state currents was calculated as ∼10976 with a off-state current of ∼5.01μA.
Published Version
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