Growth and challenges of polarization-sensitive photodetectors based mostly on 2D supplies


Polarization-sensitive photodetectors based mostly on two-dimensional (2D) supplies have garnered vital analysis consideration owing to their distinctive architectures and distinctive photophysical properties. Particularly, anisotropic 2D supplies, together with semiconductors resembling 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 various van der Waals (vdW) heterojunctions, exhibit broad detection spectral ranges and possess inherent practical benefits. Up to now, quite a few polarization-sensitive photodetectors based mostly on 2D supplies have been documented. This overview 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 based mostly on particular person 2D supplies, 2D vdW heterojunctions, nanoantenna/electrode engineering, and structural pressure built-in with 2D buildings, encompassing a variety of units from the ultraviolet to infrared bands. Nonetheless, a number of challenges persist in creating extra complete and practical 2D polarization-sensitive photodetectors. Additional analysis on this space is important. In the end, this overview provides insights into the present limitations and challenges within the discipline and presents basic suggestions to propel developments and information the progress of 2D polarization-sensitive photodetectors.