Facile fabrication of infrared photodetector using metastable vanadium dioxide VO2 (B) nanorod networks

Photodetectors find important military and civilian applications, commonly requiring expensive components and exhibiting complex designs. Herein, we report a simple and cost-effective infrared photodetector fabricated using metastable vanadium dioxide VO2 (B) nanorod (NR) networks and exhibiting high photosensitivity, stability, and reproducibility under ambient conditions. We discuss electron transfer processes in NR networks and elucidate the mechanisms of photocurrent generation as well as performance-affecting factors, revealing that the fabricated device can be used as a high-performance infrared light photodetector.