Polarization-Sensitive Fast-Response Solar-Blind UV Photodetector Based on Quasi-1d InSnS ₃ Nanowires for Direct Polarimetric Imaging

Polarization-sensitive solar-blind deep ultraviolet (DUV) photodetectors have garnered significant attention due to their potential applications in both civilian and military contexts. However, the lack of polarization-sensitive solar-blind photodetectors combining high-polarization-sensitive and fast-response has constrained their widespread application in the DUV spectrum. Herein, a polarization-sensitive solar-blind DUV photodetector based on quasi-1D ternary InSnS 3 nanowires synthesized via directly chemical vapor transport growth is reported. The quasi-1D InSnS 3 nanowire-based device exhibits superior photodetection performance with high responsivity (1.65A W −1 ), high detectivity (1.85× 10 10 Jones), and an ultrafast response time (0.331 ms) under 265 nm light illumination at room temperature (RT). In addition, the InSnS 3 -based photodetector exhibits polarization-sensitive photoresponse with dichroic ratio of 1.13 at 265 nm. More importantly, an excellent solar-blind DUV imaging capability has been demonstrated with the quasi-1D ternary InSnS 3 nanowire photodetector, highlighting its great potential for ultraviolet imaging applications.