Self-powered fine-pattern flexible SiC single nanowire ultraviolet photodetector

Abstract

This paper reports a very fine-pattern, flexible, self-powered, and cost-effective silicon carbide single nanowire ultraviolet photodetector (SiCNW-UVPD) with a high sensitivity of 1756%, a responsivity of 0.17 A/W, and a shallow dark current of similar to 0.08 pA. The device exhibits an excellent detectivity value of 7.2 x 10(10) cm.Hz(1/2). W-1 and external quantum efficiency (EQE) of 83% without the need of any external power (0 V) under 254 nm ultraviolet light. The remarkable performance parameters having the highest reported sensitivity and responsivity values for a self-powered SiC nanowire-based photodetector along with very small size and cost-efficiency could offer unique opportunities in new generation, flexible, self-powered nanoscale optoelectronics. (C) 2021 Elsevier B.V. All rights reserved.