Mixed-dimensional PdSe2/SiNWA heterostructure based photovoltaic detectors for self-driven, broadband photodetection, infrared imaging and humidity sensing

A self-driven and broadband photodetector based on PdSe₂/SiNWA mixed-dimensional vdW heterojunction is fabricated, which shows a broadband spectrum from 200 nm to 4.6 μm with a high polarization sensitivity and good mid-infrared imaging capability.