Plasmonic AgNWs for photon harvesting in double-sided self-powered broadband photodetector

Abstract

Here, a solution-processed, ITO/ZnO/rr-P3HT/Ag nanowires-based self-powered broadband photodetector, with a spectral range from 300-700 nm has been demonstrated. Due to the high transparency of the Ag nanowires-based top electrode, double-sided photoresponse is achieved. Moreover, Ag nanowires’ surface plasmonic resonance enhances the light-harvesting capability, which results in appreciable self-powered device performance. The device exhibits a peak photosensitivity of 10³, photoresponsivity of 11.9 mA/W, and photodetectivity of 2×10¹¹ Jones at 520 nm under low illumination power (1 mW/cm²). Therefore, the proposed double-sided, cost-effective, and self-powered broadband photodetector holds strong potential for integration into next-generation wearable and self-powered optoelectronic systems for sensing and communication applications. © 1980-2012 IEEE.