Results 41 to 50 of about 2,109,434 (243)

Very-Long-Wavelength Infrared Range Type-II Superlattice InAs/InAsSb GaAs/Immersed Photodetectors for High-Operating-Temperature Conditions

open access: yesEngineering Proceedings, 2023
Recently, there has been significant interest in type-II superlattice (T2SL) infrared detectors based on both InAs/GaSb and InAs/InAsSb material systems, and fully operating devices have been presented in the mid- (MWIR) and long-wavelength (LWIR ...
Kacper Matuszelański   +4 more
doaj   +1 more source

Atomic hydrogen cleaning of GaSb(001) surfaces [PDF]

open access: yes, 1996
We show that the (001) surface of GaSb can be cleaned efficiently by exposure to atomic hydrogen at substrate temperatures in the range 400–470 °C. This treatment removes carbon and oxygen contamination, leaving a clean, ordered surface with a symmetric (
Bell, Gavin R.   +1 more
core   +1 more source

Multispectral mid-infrared light emitting diodes on a GaAs substrate [PDF]

open access: yes, 2017
We have designed, simulated, and experimentally demonstrated four-colour mid-infrared (mid-IR) Light Emitting Diodes (LEDs) integrated monolithically into a vertical structure on a semi-insulating GaAs substrate.
Aziz, Mohsin   +6 more
core   +1 more source

Growth and Dark Current Analysis of GaSb- and InP-Based Metamorphic In0.8Ga0.2As Photodetectors

open access: yesMaterials, 2023
Short-wavelength infrared photodetectors based on metamorphic InGaAs grown on GaSb substrates and InP substrates are demonstrated. The devices have a pBn structure that employs an AlGaAsSb thin layer as the electron barrier to suppress dark current ...
Peng Cao   +4 more
semanticscholar   +1 more source

Near-bandgap wavelength-dependent studies of long-lived traveling coherent longitudinal acoustic phonon oscillations in GaSb/GaAs systems

open access: yes, 2007
We report first studies of long-lived oscillations in optical pump-probe measurements on GaSb-GaAs heterostructures. The oscillations arise from a photogenerated coherent longitudinal acoustic phonon wave, which travels from the top surface of GaSb ...
A. Wood   +9 more
core   +1 more source

Band-edge diagrams for strained III-V semiconductor quantum wells, wires, and dots

open access: yes, 2005
We have calculated band-edge energies for most combinations of zincblende AlN, GaN, InN, GaP, GaAs, InP, InAs, GaSb and InSb in which one material is strained to the other.
Pistol, M. -E., Pryor, C. E.
core   +1 more source

Design of a high contrast grating GaSb-based VCSEL integrated on silicon-on-insulator [PDF]

open access: yes, 2013
We present a GaSb-VCSEL concept using SOI-based HCGs as highly reflective mirrors. The optical properties of two different grating designs are simulated using RCWA.
Roelkens, Günther   +2 more
core   +1 more source

Structural and Optical Properties of InAsSbBi Grown by Molecular Beam Epitaxy on Offcut GaSb Substrates

open access: yesPhotonics, 2021
Three InAsSbBi samples are grown by molecular beam epitaxy at 400 °C on GaSb substrates with three different offcuts: (100) on-axis, (100) offcut 1° toward [011], and (100) offcut 4° toward [011].
Rajeev R. Kosireddy   +3 more
doaj   +1 more source

Electric fields and valence band offsets at strained [111] heterojunctions

open access: yes, 1997
[111] ordered common atom strained layer superlattices (in particular the common anion GaSb/InSb system and the common cation InAs/InSb system) are investigated using the ab initio full potential linearized augmented plane wave (FLAPW) method.
%N. Tit   +29 more
core   +1 more source

Compositional analysis of InAs-GaAs-GaSb heterostructures by low-loss electron energy loss spectroscopy [PDF]

open access: yes, 2013
As an alternative to Core-Loss Electron Energy Loss Spectroscopy, Low-Loss EELS is suitable for compositional analysis of complex heterostructures, such as the InAs-GaAs-GaSb system, since in this energy range the edges corresponding to these elements ...
A G Taboada   +8 more
core   +2 more sources

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