Ultrasensitive dynamic ultraviolet imaging based on a GaO photodetector array.

Defects and noise in GaO detectors have traditionally limited their practical application. In this work, by reducing the triethylgallium flow from 200 sccm to 50 sccm, oxygen vacancy was effectively suppressed, leading to a transition in noise from Lorentzian to flicker-type, with a significant decrease in noise current from 0.15 nA to 1.