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A resonant tunneling quantum-dot infrared photodetector
A novel device-resonant tunneling quantum-dot infrared photodetector-has been investigated theoretically and experimentally. In this device, the transport of dark current and photocurrent areExpand
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Characteristics of a tunneling quantum-dot infrared photodetector operating at room temperature
We report high-temperature (240–300K) operation of a tunneling quantum-dot infrared photodetector. The device displays two-color characteristics with photoresponse peaks at ∼6μm and 17μm. TheExpand
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High-performance mid-infrared quantum dot infrared photodetectors
Quantum dot infrared photodetectors (QDIPs) have emerged as attractive devices for sensing long wavelength radiation. Their principle of operation is based on intersublevel transitions in quantumExpand
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Terahertz detection with tunneling quantum dot intersublevel photodetector
The characteristics of a tunnel quantum dot intersublevel photodetector, designed for the absorption of terahertz radiation, are described. The absorption region consists of self-organizedExpand
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Effect of well width on three-color quantum dots-in-a-well infrared detectors
Three-color InAs-InGaAs quantum dots-in-a-well (DWELL) detectors having different well sizes are presented. Three DWELL detectors (1388, 1373, and 1299) with different quantum well (QW) widths (120,Expand
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High-Temperature Tunneling Quantum-Dot Intersublevel Detectors for Mid-Infrared to Terahertz Frequencies
Quantum-dot infrared photodetectors have emerged as attractive devices for sensing long wavelength radiation. Their principle of operation is based on absorption of radiation via intersublevelExpand
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High-performance quantum ring detector for the 1-3 terahertz range
Molecular beam epitaxy of InAs/GaAs quantum dots and their subsequent transformation to quantum rings by postepitaxy thermal annealing have been investigated. Photoconductive detectors with multipleExpand
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Fourier Transform Infrared Spectroscopy Measurements of Multi-phonon and Free-Carrier Absorption in ZnO
Fourier transform infrared (FTIR) measurements were carried out on thin films and bulk single crystals of ZnO over a wide temperature range to study the free-carrier and multi-phonon infraredExpand
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Normal incidence detection of ultraviolet, visible, and mid-infrared radiation in a single GaAs/AlGaAs device.
A GaAs/AlGaAs detector is demonstrated showing multiple detection capabilities. This detector exhibits a broad spectral response in the 200-870 nm (ultraviolet-visible) range for forward bias and inExpand
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