Journal
NEW JOURNAL OF CHEMISTRY
Volume 47, Issue 13, Pages 6397-6404Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nj06004c
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In this work, self-powered flexible transparent ultraviolet (UV) photodetectors with fast response speed, high transparency, and excellent mechanical stability are reported. The device is based on a CuO/ZnO nanowire array heterojunction on a Cu NW backbone. It exhibits a rise time of 16 ms, a decay time of 17 ms, a photocurrent/dark current ratio of 392, and a transparency of 80%. Furthermore, the device retains good photoresponse performance even after 10,000 bending cycles, demonstrating its superior mechanical stability.
Self-powered flexible transparent ultraviolet (UV) photodetectors (PDs) have attracted great attention for next-generation portable and wearable optoelectronic device applications. However, it is still a challenge to fabricate high performance self-powered UV PDs with high flexibility and superior transparency. In this work, we report self-powered flexible transparent UV PDs with fast response speed, high transparency and excellent mechanical stability based on a CuO/ZnO nanowire (NW) array heterojunction on the Cu NW backbone. The device exhibits fast photoresponse times with a rise time of 16 ms and a decay time of 17 ms, a large photocurrent/dark current ratio of 392 and a high transparency of 80%. In addition, the as-fabricated self-powered UV PDs can retain good photoresponse performance when the device is bent even after 10 000 bending cycles, suggesting their superior mechanical stability.
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