Piezo‐Phototronic UV/Visible Photosensing with Optical‐Fiber–Nanowire Hybridized Structures

An optical-fiber–nanowire hybridized UV–visible photodetector (PD) is reported. The PD is designed to allow direct integration in optical communication systems without requiring the use of couplers via fiber-welding technology. The PD works in two modes: axial and off-axial illumination mode. By using the piezo-phototronic effect, the performance of the PD is enhanced/optimized by up to 718% in sensitivity and 2067% in photoresponsivity.