2006
DOI: 10.1016/j.infrared.2005.04.009
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A new approach to quantum well infrared photodetectors: Staircase-like quantum well and barriers

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Cited by 12 publications
(8 citation statements)
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“…The measured dark currents were low as theoretically proposed for similar staircase QWIPs [2,3]. Bias dependent activation energies were found from I-V measurements.…”
Section: Discussionsupporting
confidence: 72%
See 1 more Smart Citation
“…The measured dark currents were low as theoretically proposed for similar staircase QWIPs [2,3]. Bias dependent activation energies were found from I-V measurements.…”
Section: Discussionsupporting
confidence: 72%
“…n+ GaAs, top and bottom contact layers are highly doped with Si at 1.0×10 18 cm -3 concentration. High doping concentration and thickness of the contact layers prevents band bending and provides good ohmic contacts for the device [3]. All samples have cylindrical mesa geometry with ring contacts on the top.…”
mentioning
confidence: 99%
“…The advantage of the staircaselike structure has been shown as low dark current density in the previous work of our group [9]. In this paper, we present a theoretical study of a broadband staircase infrared detector with low dark current density.…”
Section: Introductionmentioning
confidence: 82%
“…This provides us opportunity to perform asymmetry in each well and barrier parameters in one period. Variation from the standard QWIP structure have been recently proposed as a single wavelength bound to bound transition [4] and broadband bound to continuum transition [5] staircase-like detectors working in long-wavelength atmospheric windows. The advantage of the staircase-like structure has been shown as low dark current density (2x10 -7 A/cm 2 ) [5].…”
mentioning
confidence: 99%
“…The Hamiltonian of the system and wave functions has been given in elsewhere [4,5]. In order to calculate the wave functions, we placed quasi-barriers on the left and right hand sides of the device structure with potential heights, 1 b V .…”
mentioning
confidence: 99%