Kim Jihoon, Jo Songhyun, Park Kyongsoo, Kim Bong-Jun, Lee Yong Wook
J Nanosci Nanotechnol. 2015 Nov;15(11):8484-8. doi: 10.1166/jnn.2015.11456.
By utilizing a CO2 laser as an illumination light source for triggering, we demonstrated bidirectional laser triggering in a two-terminal planar device based on a highly resistive vanadium dioxide (VO2) thin film. Bidirectional laser triggering between 0 and 10 mA was realized by switching the CO2 laser whose focused beam illuminated the VO2 film, and transient responses of laser-triggered devices were investigated when periodical laser pulses excited the VO2-based device at a variety of pulse widths and repetition rates. A switching contrast between off- and on-state currents was evaluated as -3333, and the rising and falling times were measured as -39 and -21 ms in the transient responses obtained by using periodic laser pulses with a pulse width of 100 ms, respectively.
通过使用二氧化碳激光作为触发的照明光源，我们在基于高电阻二氧化钒（VO₂）薄膜的两终端平面器件中演示了双向激光触发。通过切换聚焦光束照射VO₂薄膜的二氧化碳激光，实现了0至10 mA之间的双向激光触发，并研究了在各种脉冲宽度和重复率下，周期性激光脉冲激发基于VO₂的器件时激光触发器件的瞬态响应。关态和开态电流之间的开关对比度评估为-3333，在使用脉冲宽度为100 ms的周期性激光脉冲获得的瞬态响应中，上升时间和下降时间分别测量为-39和-21 ms。
