Light Induced RESET Phenomenon in Invisible Memristor for Photo Sensing

In this letter, we present a novel invisible bilayer ZnSnO _y /ZnSnO _x memristor for photo sensing. The device exhibits excellent photo sensing features such as a highly stable electrical set and optical reset endurances at least 2200 cycles for blue light and 1800 cycles for green and red light without any deterioration. Moreover, the device shows excellent retention (10 ⁵ s) at 90 °C without disruption and high transmittance of about 85%. These outstanding device properties would allow us to create either an optical to an electronic memory device or an always-on continuous measurement optoelectronic sensor.