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- W4289915792 abstract "Hot electron detectors (HEDs) based on plasmon resonance can circumvent a semiconductor's bandgap limitation and have high sensitivity, suitable for infrared gas detectors. Unfortunately, there are few literature reports on research in the mid-infrared (MIR) region. Herein, we design and optimize a HED based on Al/GaAs fishnet nanostructure for MIR CO2 sensing, and its optical-electrical properties are numerically studied. Surface plasmons not only achieve strong absorptance at CO2 emission wavelength but also greatly improve the photoelectric responsivity over a plane structure detector (∼42times). By changing the thickness of the GaAs layer, the detection wavelength can also be actively adjusted, achieving a larger range of multi-gas detection. The effect of external voltage is also considered. This work highlights a potential engineering application value and offers a path toward more compact and efficient MIR gas detectors." @default.
- W4289915792 created "2022-08-06" @default.
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- W4289915792 date "2022-05-12" @default.
- W4289915792 modified "2023-09-27" @default.
- W4289915792 title "Design and optimization of mid-infrared hot electron detector based on Al/GaAs fishnet nanostructure for CO<sub>2</sub> sensing" @default.
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- W4289915792 doi "https://doi.org/10.1364/ao.456247" @default.
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