Journal
ADVANCED MATERIALS INTERFACES
Volume 9, Issue 17, Pages -Publisher
WILEY
DOI: 10.1002/admi.202200448
Keywords
anisotropic semiconductors; high signal; noise ratio; polarimetric imaging; polarized photodetectors; Sb; Se-2; (3) nanowires
Funding
- Australian Research Council [DP200103188, LE200100032, DP170104562, LP170100088, LE170100233, FT130101708]
- UWA Research Impact Grant
- WA node of the Australian National Fabrication Facility (ANFF)
- Microscopy Australia Facility at the Centre for Microscopy, Characterization, and Analysis (CMCA) at the University of Western Australia (UWA)
- Australian Research Council [LE200100032, DP200103188] Funding Source: Australian Research Council
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This study presents the optical applications of chemical vapor deposition-grown Sb2Se3 nanowires in polarized single nanowire photodetectors. High-quality Sb2Se3 nanowires exhibit low shot noise, high responsivity, and high specific detectivity. Additionally, the Sb2Se3 nanowires show broadband polarized photoresponse and appropriate polarimetric imaging quality.
This work presents a study on the optical applications of chemical vapor deposition-grown Sb2Se3 nanowires in polarized single nanowire photodetectors. High-quality Sb2Se3 nanowires are obtained with diameters as small as approximate to 15 nm, which is the first report for ultrathin Sb2Se3 nanowires. The fabricated Sb2Se3 nanowire-based photodetector presents a low shot noise of approximate to 9 x 10(-16) A Hz(-1/2), a large signal/noise ratio of 1436.55, a high responsivity of 3.61 A W-1, and a high specific detectivity of 2.36 x 10(11) Jones, which can be attributed to the high-quality crystalline nanowires obtained. More interestingly, the Sb2Se3 nanowire-based photodetectors exhibit broadband polarized photoresponse to incident light with wavelengths ranging from visible to near-infrared (532 - 830 nm). A linearly dichroic ratio of 1.71 is obtained for the 830 nm light illumination. The Sb2Se3 nanowire detectors also present appropriate polarimetric imaging quality, revealing the potential of Sb2Se3 nanowires for polarimetric imaging applications.
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