Physics of non-adiabatic transport and field-domain effect in quantum-well infrared photodetectors

Huang, Danhong; Cardimona, D. A.

doi:10.1016/s1350-4495(03)00170-1

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…From the result in Eq. (35), we are able to calculate the mobility tensor of this multi-quantum-well system using Eq. ( 29), which includes the scattering contribution from defects in the system.…”

Section: Momentum Dissipation From Defect Scatteringmentioning

confidence: 99%

“…IR detector arrays operated in the space environment are subjected to a variety of radiation sources while in orbit, e.g., electrons, protons and some heavy ions confined by the earth's magnetic field (Van Allen radiation belts). This indicates that QW photodetectors for space-based surveillance or space-situational awareness must be characterized in advance and should acquire not only high performance (high quantum efficiency and low dark current density) 35,36 but also radiation tolerance or ability to withstand the effects of the radiation they would expect to encounter on a given orbit. Detector technologies that operate in the harsh radiation environment of space with better radiation tolerance would lead to greater flexibility in orbit selection, technical applications and system sustainability, and therefore, are of more value to the space-based sensing community.…”

Section: Introductionmentioning

confidence: 99%

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Defect capturing and charging dynamics and their effects on magneto-transport of electrons in quantum wells

Iurov,

Huang,

Gumbs

et al. 2021

Preprint

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The defect corrections to polarization and dielectric functions of Bloch electrons in quantum wells are first calculated. Following this, we derive the first two moment equations from Boltzmann transport theory and apply them to explore defect effects on magneto-transport of Bloch electrons. Meanwhile, we obtain analytically the momentum-relaxation time and mobility tensor for Bloch electrons making use of the screened defect-corrected polarization function. Based on quantumstatistical theory, we further investigate the defect capture and charging dynamics by employing a parameterized physics model for defects to obtain defect wave functions. After this, both capture and relaxation rates, as well as density for captured Bloch electrons, are calculated self-consistently as functions of temperature, doping density and different defect types. By applying the energy-balance equation, the number of occupied energy levels and chemical potential of defects are determined, with which the transition rate for defect capturing is obtained. By using these results, defect energy-relaxation, capture and escape rates, and Bloch-electron chemical potential are obtained self-consistently. At the same time, the Bloch-electron energy-and momentum-relaxation rates, as well as the current suppression factor, are also investigated quantitatively. Finally, by combining all these studies together, the temperature dependence of the Hall and longitudinal mobilities is demonstrated for Bloch electrons in either single-or multi-quantum wells, which can be utilized for quantifying burst noise in transistors and blinking noise in photo-detectors.

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Section: Momentum Dissipation From Defect Scatteringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Defect capturing and charging dynamics and their effects on magneto-transport of electrons in quantum wells

Iurov,

Huang,

Gumbs

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…is the so-called mobility tensor [34] for describing magneto-transport of subband electrons, which also depends on 23) and (25), we are able to simply rewrite the macroscopic electro-magnetic force as F e (t)…”

Section: μ[B(t)]mentioning

confidence: 99%

“…For possible advantages of our theory, we would like to point out that it could help the design of quantum-well focal plane arrays [21,22] which must be characterized in advance for damages by space radiation [23,24]. They should achieve not only high performance [25] but also radiation tolerance to the radiation encountered in a satellite orbit.…”

Section: Introductionmentioning

confidence: 99%

Defect capturing and charging dynamics and their effects on magneto-transport of electrons in quantum wells

Iurov¹,

Huang²,

Gumbs³

et al. 2021

J. Phys.: Condens. Matter

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The calculated defect corrections to the polarization and dielectric functions for Bloch electrons in quantum wells are presented. These results were employed to derive the first two moment equations from the Boltzmann transport theory and then applied to explore the role played by defects on the magneto-transport of Bloch electrons. Additionally, we have derived analytically the inverse momentum-relaxation time and mobility tensor for Bloch electrons by making use of the screened defect-corrected polarization function. Based on quantum-statistical theory, we have investigated the defect capture and charging dynamics by employing a parameterized physics-based model for defects to obtain defect wave functions. Both capture and relaxation rates, as well as the density for captured Bloch electrons, were calculated self-consistently as functions of temperature, doping density and chosen defect parameters. By applying the energy-balance equation, the number of occupied energy levels and the chemical potential of defects were determined, with which the transition rate for defect capturing was obtained. By applying these results, the defect energy-relaxation, capture and escape rates, and Bloch-electron chemical potential were calculated self-consistently for a non-canonical subsystem of Bloch electrons. At the same time, the energy- and momentum-relaxation rates of Bloch electrons, as well as the current suppression factor, were also investigated quantitatively. By combining all these results, the temperature dependence of the Hall and longitudinal mobilities was presented for Bloch electrons in either single- or multi-quantum wells.

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Many-Body Theory of Proton-Generated Point Defects for Losses of Electron Energy and Photons in Quantum Wells

et al. 2018

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The effects of point defects on the loss of either energies of ballistic electron beams or incident photons are studied by using a many-body theory in a multi-quantum-well system. This includes the defect-induced vertex correction to a bare polarization function of electrons within the ladder approximation as well as the intralayer and interlayer screening of defect-electron interactions are also taken into account in the random-phase approximation. The numerical results of defect effects on both energy-loss and optical-absorption spectra are presented and analyzed for various defect densities, number of quantum wells, and wave vectors. The diffusion-reaction equation is employed for calculating distributions of point defects in a layered structure. For completeness, the production rate for Frenkel-pair defects and their initial concentration are obtained based on atomic-level molecular-dynamics simulations. By combining defect-effect, diffusion-reaction and molecular-dynamics models proposed in this paper with a space-weather forecast model for the first time, it will be possible to enable specific designing for electronic and optoelectronic quantum devices that will be operated in space with radiation-hardening protection, and therefore, will effectively extend the lifetime of these satellite onboard electronic and optoelectronic devices.PACS numbers:

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Physics of non-adiabatic transport and field-domain effect in quantum-well infrared photodetectors

Cited by 5 publications

References 15 publications

Defect capturing and charging dynamics and their effects on magneto-transport of electrons in quantum wells

Defect capturing and charging dynamics and their effects on magneto-transport of electrons in quantum wells

Defect capturing and charging dynamics and their effects on magneto-transport of electrons in quantum wells

Many-Body Theory of Proton-Generated Point Defects for Losses of Electron Energy and Photons in Quantum Wells

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