Silver-Nanowire-Embedded Transparent Metal-Oxide Heterojunction Schottky Photodetector

Abstract

We report a self-biased and transparent Cu4O3/TiO2 heterojunction for ultraviolet photodetection. The dynamic photoresponse improved 8.5 X 10(4)% by adding silver nanowires (AgNWs) Schottky contact and maintaining 39% transparency. The current density voltage characteristics revealed a strong interfacial electric field, responsible for zero-bias operation. In addition, the dynamic photoresponse measurement endorsed the effective holes collection by embedded-AgNWs network, leading to fast rise and fall time of 0.439 and 0.423 ms, respectively. Similarly, a drastic improvement in responsivity and detectivity of 187.5 mAW(-1) and of 5.13 X 10(9) Jones, is observed, respectively. The AgNWs employed as contact electrode can ensure high-performance for transparent and flexible optoelectronic applications.