Results 61 to 70 of about 2,109,434 (243)

Interband cascade lasers with room temperature threshold current densities below 100 A/cm(2) [PDF]

open access: yes, 2013
Interband Cascade Lasers (ICLs) with threshold current densities below 100 A/cm(2) in pulsed operation at room temperature are presented. The laser structure comprises 10 active stages of 41 nm length, each stage containing a W-quantum well active region
Höfling, Sven   +2 more
core   +2 more sources

Nanoscale Ripples at the Surface of SrTiO3 Irradiated by a Broad Low‐Energy Ar+ (7 keV) Ion Beam

open access: yesSmall, EarlyView.
Broad Ar ion beam irradiation creates self‐organized ripple nanostructures on oxide surfaces. A schematic illustrates the process, while cross‐sectional STEM imaging captures the ripple morphology. Complementary elemental mapping by EELS highlights nanoscale chemical variations, linking ion‐beam nanostructuring with structural and compositional ...
Mohammad S. Jamal   +9 more
wiley   +1 more source

Doped or Quantum-Dot Layers as In Situ Etch-Stop Indicators for III/V Semiconductor Reactive Ion Etching (RIE) Using Reflectance Anisotropy Spectroscopy (RAS)

open access: yesMicromachines, 2021
Reflectance anisotropy spectroscopy (RAS), which was originally invented to monitor epitaxial growth, can—as we have previously shown—also be used to monitor the reactive ion etching of III/V semiconductor samples in situ and in real time, as long as the
Guilherme Sombrio   +5 more
doaj   +1 more source

Magnetotunneling in a Two-Dimensional Electron-Hole System Near Equilibrium [PDF]

open access: yes, 2000
We have measured the zero-bias differential tunneling conductance of InAs/AlSb/GaS b/AlSb/InAs heterostructures at low temperatures (1.7K < T < 60K) and unde r a magnetic field at various angles with the heterostructure's interfaces.
González, E. M., Lin, Y., Mendez, E. E.
core   +3 more sources

Comprehensive Review on Concentrated Solar Photovoltaics: Manufacturing, Cooling Technologies, and Advanced Applications

open access: yesAdvanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.
This review examines the evolution and current state of concentrated photovoltaic systems, focusing on materials, manufacturing pathways, and thermal management challenges. Advanced cooling techniques and emerging applications are assessed alongside recent digital integration strategies. Through linking performance gains with practical limitations, the
Abdul Ghani Olabi   +7 more
wiley   +1 more source

On the importance of antimony for temporal evolution of emission from self-assembled (InGa) (AsSb)/GaAs quantum dots on GaP(001)

open access: yesNew Journal of Physics, 2021
Understanding the carrier dynamics of nanostructures is the key for development and optimization of novel semiconductor nano-devices. Here, we study the optical properties and carrier dynamics of (InGa)(AsSb)/GaAs/GaP quantum dots (QDs) by means of non ...
Petr Steindl   +4 more
doaj   +1 more source

P-n junctions formed in gallium antimonide [PDF]

open access: yes, 1970
Vapor phase deposition process forms a heavily doped n-region on a melt-grown p-type gallium antimonide substrate. HCl transports gallium to the reaction zone, where it combines with antimony hydride and the dopant carrier, hydrogen telluride ...
Clough, R., Richman, D., Tietjen, J.
core   +1 more source

Mid‐Infrared Integrated Photonics: Material Platforms and Emerging Applications

open access: yesLaser &Photonics Reviews, Volume 20, Issue 6, 18 March 2026.
Mid‐infrared (MIR) integrated photonics enables advanced chemical and biological sensing through the unique absorption features of molecules in the 2–20 µm range. This review highlights recent material advances such as chalcogenide glasses, silicon, and graphene and explores MIR applications in environmental monitoring, medical diagnostics ...
Muhammad Ali Butt   +2 more
wiley   +1 more source

Mid-wavelength infrared high operating temperature pBn photodetectors based on type-II InAs/InAsSb superlattice

open access: yesAIP Advances, 2020
A high operating temperature mid-wavelength infrared pBn photodetector based on the type-II InAs/InAsSb superlattice on a GaSb substrate has been demonstrated.
Donghai Wu   +3 more
doaj   +1 more source

Pre-epitaxial treatment of GaSb substrates for liquid-phase growth of homoepitaxial layers

open access: yesТехнологія та конструювання в електронній апаратурі, 2008
The results of investigation to find out the optimal conditions of pre-epitaxial GaSb substrate treatment by chemical etching in inorganic acid mixes are offered.
О. V. Andronova, V. V. Kurak
doaj  

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