Zinc oxide nanotetrapods for room temperature UV sensors by spray-coating

Abstract

Although ZnO nanowires are extensively used for UV sensing, exceptional performance requires a complex multistep preparation technique as well as high measurement temperatures. In this study, we describe a UV sensor preparation technique with a high responsiveness (on/off) and short rise-decay durations at ambient temperature utilizing a one-step spray-coating technique of the ZnO tetrapod (ZnO- T) structure. As a result, UV sensors may be practically put on any substrate, and this technique is viable for commercial UV sensor preparation.