Abstract
We report on the fabrication and characterization of Ill-nitride layered tunnel barriers with applications for a new type of tunable hyperspectral imaging detector with intrinsically hyperspectral pixels. This would enable each pixel to be individually tunable in real-time through a range of wavelengths, with the number and width of spectral channels being dynamically adjustable. Shape-engineered electron barriers fabricated from III-nitride heterostructures allow barrier height to be varied by application of a voltage. A spectroscopy of photon wavelength is enabled via the collection of photoexcited electrons across this barrier. The device is envisioned for tunable detection of ultraviolet through infrared wavelengths.
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