Results 21 to 30 of about 11,730 (206)

1 eV Ga(NAsSb) grown by MOVPE using di-tertiary-butyl-arsano-amine (DTBAA)

open access: yesAIP Advances, 2018
N containing lattice matched 1 eV materials, such as Ga(NAsSb) and (GaIn)(NAs), are discussed as potential solar subcells in a four junction solar cell alongside Ge, GaAs, and (GaIn)P, reaching theoretically conversion efficiencies of around 50 %.
E. Sterzer   +9 more
doaj   +1 more source

Optical characteristics of single wavelength-tunable InAs/InGaAsP/InP(100) quantum dots emitting at 1.55 um [PDF]

open access: yes, 2006
We have studied the emission properties of individual InAs quantum dots (QDs) grown in an InGaAsP matrix on InP(100) by metal-organic vapor-phase epitaxy.
Anantathanasarn, S.   +5 more
core   +2 more sources

Cross-sectional and plan-view cathodoluminescence of GaN partially coalesced above a nanocolumn array [PDF]

open access: yes, 2012
The optical properties of GaN layers coalesced above an array of nanocolumns have important consequences for advanced optoelectronic devices. GaN nanocolumns coalesced using a nanoscale epitaxial overgrowth technique have been investigated by high ...
Edwards, P. R.   +4 more
core   +2 more sources

High growth temperature for AlN by jet stream gas flow metalorganic vapor phase epitaxy

open access: yesScientific Reports, 2023
Deep ultraviolet light-emitting diodes have attracted considerable attention for realizing virus inactivation applications. The UV-LEDs use the AlN underlying layer and the plane sapphire substrate.
Kentaro Nagamatsu   +5 more
doaj   +1 more source

Toward defect-free semi-polar GaN templates on pre-structured sapphire [PDF]

open access: yes, 2016
The microstructure of semi-polar (11–22) GaN templates grown on pre-structured r-plane sapphire by MOVPE has been characterized by TEM. Cross-sectional observations indicate that defects are generated in three regions of the layers: threading ...
Caliebe   +18 more
core   +1 more source

Quantum well and dot self-aligned stripe lasers utilizing an InGaP optoelectronic confinement layer [PDF]

open access: yes, 2009
We demonstrate and study a novel process for fabrication of GaAs-based self-aligned lasers based upon a single over-growth. A lattice-matched n-doped InGaP layer is utilized for both electrical and optical confinements.
Alexander, R.R   +9 more
core   +1 more source

Time-Resolved characterization of InAsP/InP quantum dots emitting in the C-band telecommunication window [PDF]

open access: yes, 2008
The dynamic response of InAsP quantum dots grown on InP(001) substrates by low-pressure Metalorganic Vapor Phase Epitaxy emitting around 1.55 $\mu$m, is investigated by means of time-resolved microphotoluminescence as a function of temperature.
Beaudoin, Gregoire   +8 more
core   +2 more sources

Impact of face-to-face annealed sputtered AlN on the optical properties of AlGaN multiple quantum wells

open access: yesAIP Advances, 2019
The impact of a face-to-face annealed sputtered AlN/sapphire (FFA Sp-AlN) template with threading-dislocation densities (TDDs) of 2 × 108 cm−2 and an n-type AlGaN (n-AlGaN) underlayer on optical properties of AlGaN multiple quantum wells (MQWs) with an ...
Kanako Shojiki   +5 more
doaj   +1 more source

Facet modulation selective epitaxy–a technique for quantum-well wire doublet fabrication [PDF]

open access: yes, 1992
The technique of facet modulation selective epitaxy and its application to quantum-well wire doublet fabrication are described. Successful fabrication of wire doublets in the AlxGa1–xAs material system is achieved.
Ahn, Channing C.   +4 more
core   +1 more source

Approach to high quality GaN lateral nanowires and planar cavities fabricated by focused ion beam and metal-organic vapor phase epitaxy

open access: yesScientific Reports, 2018
We have developed a method to fabricate GaN planar nanowires and cavities by combination of Focused Ion Beam (FIB) patterning of the substrate followed by Metal Organic Vapor Phase Epitaxy (MOVPE). The method includes depositing a silicon nitride mask on
Galia Pozina   +10 more
doaj   +1 more source

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