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- W3157109086 abstract "The sensitive detection of polarization-states of ultraviolet (UV) light is enssential for many optoelectronic applications, such as UV communication and polarization imaging. However, the anisotropic response of the polarization detectors based on pristine wide-bandgap materials are quite weak, hindering UV polarization detectors from further application. In this paper, we present highly polarization-sensitive photodetectors based on Ga2O3 (UVC) and ZnO (UVA) materials by integrating with sub-wavelength metal nanowires. The photoresponse of pristine ZnO photodetectors to polarized UVA light turns from isotropic to centrosymmetric after introducing 70 nm width/space metal grids. For Ga2O3 UVC photodetectors, the polarization rejection ratio was increased from 7.5 to 49 after integrated with 50 nm width/space metal grids. The enhancement of photoresponse to polarized UV light by using sub-wavelength metal grids is studied via FDTD simulation. This work provides an effective way for wide-bandgap semiconductors to improve their sensitivity to UV polarized light, and could be used in UV polarization detection, imaging and communication." @default.
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- W3157109086 date "2021-04-01" @default.
- W3157109086 modified "2023-09-27" @default.
- W3157109086 title "Enhancement of polarization response in UVA and UVC wavelength with integrated sub-wavelength metal-grids" @default.
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- W3157109086 doi "https://doi.org/10.1016/j.mee.2021.111555" @default.
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