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- W4288795144 abstract "Si-based photodetectors satisfy the criteria of low-cost and environmental-friendly, and can enable the development of on-chip complementary metal-oxide-semiconductor (CMOS)-compatible photonic systems. However, extending their room-temperature photoresponse into the mid-wavelength infrared (MWIR) regime remains challenging due to the intrinsic bandgap of Si. Here, we report on a comprehensive study of a room-temperature MWIR photodetector based on Si hyperdoped with Te. The demonstrated MWIR p-n photodiode exhibits a spectral photoresponse up to 5 {mu}m and a slightly lower detector performance than the commercial devices in the wavelength range of 1.0-1.9 {mu}m. We also investigate the correlation between the background noise and the sensitivity of the Te-hyperdoped Si photodiode, where the maximum room-temperature specific detectivity is found to be 3.2 x 10^12 cmHz^{1/2}W^{-1} and 9.2 x 10^8 cmHz^{1/2}W^{-1} at 1 {mu}m and 1.55 {mu}m, respectively. This work contributes to pave the way towards establishing a Si-based broadband infrared photonic system operating at room temperature." @default.
- W4288795144 created "2022-07-30" @default.
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- W4288795144 date "2020-11-30" @default.
- W4288795144 modified "2023-09-26" @default.
- W4288795144 title "Silicon-based Intermediate-band Infrared Photodetector realized by Te Hyperdoping" @default.
- W4288795144 doi "https://doi.org/10.48550/arxiv.2011.14612" @default.
- W4288795144 hasPublicationYear "2020" @default.
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