III-Nitride Heterostructure Layered Tunnel Barriers For a Tunable Hyperspectral Detector |
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Authors: | Bell LD Tripathi N Grandusky JR Jindal V Shahedipour-Sandvik FS |
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Affiliation: | Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA; |
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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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