Improvement and challenges of polarization-sensitive photodetectors primarily based on 2D supplies

Polarization-sensitive photodetectors primarily based on two-dimensional (2D) supplies have garnered important analysis consideration owing to their distinctive architectures and distinctive photophysical properties. Particularly, anisotropic 2D supplies, together with semiconductors corresponding to black phosphorus (BP), tellurium (Te), transition metallic dichalcogenides (TMDs), and tantalum nickel pentaselenide (Ta₂NiSe₅), in addition to semimetals like 1T′-MoTe₂ and PdSe₂, and their numerous van der Waals (vdW) heterojunctions, exhibit broad detection spectral ranges and possess inherent useful benefits. So far, quite a few polarization-sensitive photodetectors primarily based on 2D supplies have been documented. This assessment initially supplies a concise overview of the detection mechanisms and efficiency metrics of 2D polarization-sensitive photodetectors, that are pivotal for assessing their photodetection capabilities. It then examines the most recent developments in polarization-sensitive photodetectors primarily based on particular person 2D supplies, 2D vdW heterojunctions, nanoantenna/electrode engineering, and structural pressure built-in with 2D constructions, encompassing a spread of units from the ultraviolet to infrared bands. Nevertheless, a number of challenges persist in creating extra complete and useful 2D polarization-sensitive photodetectors. Additional analysis on this space is crucial. Finally, this assessment gives insights into the present limitations and challenges within the area and presents basic suggestions to propel developments and information the progress of 2D polarization-sensitive photodetectors.