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- W2890130603 abstract "Rectifiers have been used to detect electromagnetic waves with very low photon energies. In these rectifying devices, different methods have been utilized, such as adjusting the bandgap and the doping profile, or utilizing the contact potential of the metal–semiconductor junction to produce current flow depending on the direction of the electric field. In this paper, it is shown that the asymmetric application of nano-electrodes to a metal–semiconductor–metal (MSM) structure can produce such rectification characteristics, and a terahertz (THz) wave detector based on the nano-MSM structure is proposed. Integrated with a receiving antenna, the fabricated device detects THz radiation up to a frequency of 1.5 THz with responsivity and noise equivalent power of 10.8 V/W and respectively, estimated at 0.3 THz. The unidirectional current flow is attributed to the thermionic emission of hot carriers accelerated by the locally enhanced THz field at the sharp end of the nano-electrode. This work not only demonstrates a new type of THz detector but also proposes a method for manipulating ultrafast charge-carrier dynamics through the field enhancement of the nano-electrode, which can be applied to ultrafast photonic and electronic devices." @default.
- W2890130603 created "2018-09-27" @default.
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- W2890130603 date "2018-09-26" @default.
- W2890130603 modified "2023-10-15" @default.
- W2890130603 title "Terahertz rectifier exploiting electric field-induced hot-carrier effect in asymmetric nano-electrode" @default.
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- W2890130603 doi "https://doi.org/10.1088/1361-6528/aae130" @default.
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