Zr_(0.05)Ti_(0.95)O_2-Nanowire-Based Ultraviolet Photodetector with Self-Powered Properties

摘要

Zr_(0.05)Ti_(0.95)O_2 solid solution nanowires were synthesized directly on a SnO_2:F-coated glass via a low-temperature hydrothermal method, and a high-sensitivity self-powered ultraviolet detector based on SnO_2:F/Zr_(0.05)Ti_(0.95)O_2 heterojunction was fabricated subsequently. Zr doping not only improves the detector's photoresponse but also adjusts the response range to the short-wavelength direction. At 0 V bias, a highly responsivity of 1.03A/W and an internal gain of 3.6 were obtained, together with favorable visible-blind characteristics and short response time. This high-sensitivity self-powered ultraviolet detector provides potential applications in wireless environmental monitoring, biological detection, and ultraviolet astronomy.