Results 41 to 50 of about 16,375 (210)

Change of the Optoelectronic Properties of Semiconductor Compounds Induced by Nanosecond Laser Irradiation Pulses

open access: yesФізика і хімія твердого тіла
New research has discovered discrepancies in the melting points, plasma generation, and resulting changes in optoelectronic properties of semiconductor materials A2B6 and A3B5 when exposed to laser light, even when the experimental conditions are the ...
S. Levytskyi, Z. Cao, О. Koba, М. Koba
doaj   +1 more source

Sharp interfaces in p+-AlGaAs/n-GaAs epitaxial structures obtained by MOCVD

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2014
The complexity of forming sharp and high-quality boundaries in p+AlGaAs/n-GaAs systems by MOCVD method is caused by differing on 80–120°С optimal crystallization temperature of GaAs layers and n-AlGaAs solid solutions.
N. M. Vakiv   +4 more
doaj   +1 more source

GaAs/AlGaAs- and InGaAs/AlGaAs-heterostructures for high-power semiconductor infrared emitters

open access: yesTechnical Physics, 2022
The internal quantum efficiency of GaAs/AlGaAs- and InGaAs/AlGaAs-heterostructures for infrared light emitter diodes has been determined. The influence of the growth conditions of heterostructures grown by the molecular beam epitaxy and post-growth annealing on the quantum efficiency of heterostructures has been investigated.
D. V. Gulyaev   +5 more
openaire   +1 more source

Evaluation of GaAsSb/AlGaAs strained superlattice photocathodes

open access: yesAIP Advances, 2018
GaAs-class strained superlattice (SSL) photocathodes can provide electron beams with electron spin polarization (ESP) exceeding the theoretical maximum 50% of bulk GaAs.
Wei Liu   +5 more
doaj   +1 more source

Effect of Quantum Barrier Thickness on the Optical Properties of Triple Triangular GaAs/AlGaAs Quantum Wells

open access: yesCumhuriyet Science Journal
This study investigates the electronic and optical properties of a GaAs/AlxGa1-xAs triple triangular quantum well (QW) structure, focusing on the 2-4 and 3-4 intersubband transitions. By varying the right barrier (RB) thickness from 0 to 6 nm, the impact
Behçet Özgür Alaydin
doaj   +1 more source

Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and GaAs/AlGaAs heterostructures

open access: yesScientific Reports, 2021
Quantum well (QW) heterostructures have been extensively used for the realization of a wide range of optical and electronic devices. Exploiting their potential for further improvement and development requires a fundamental understanding of their ...
Mahdi Hajlaoui   +10 more
doaj   +1 more source

Luminescence from Droplet-Etched GaAs Quantum Dots at and Close to Room Temperature

open access: yesNanomaterials, 2021
Epitaxially grown quantum dots (QDs) are established as quantum emitters for quantum information technology, but their operation under ambient conditions remains a challenge.
Leonardo Ranasinghe   +5 more
doaj   +1 more source

Two-photon-induced photoconductivity enhancement in semiconductor microcavities: a theoretical investigation [PDF]

open access: yes, 2002
We describe a detailed theoretical investigation of two-photon absorption photoconductivity in semiconductor microcavities. We show that high enhancement (by a factor of >10, 000) of the nonlinear response can be obtained as a result of the microcavity ...
Folliot, H.   +7 more
core  

Monolithic AlGaAs second-harmonic nanoantennas [PDF]

open access: yes, 2016
We demonstrate monolithic aluminum gallium arsenide (AlGaAs) optical nanoantennas. Using a selective oxidation technique, we fabricated epitaxial semiconductor nanocylinders on an aluminum oxide substrate.
Carletti, L.   +21 more
core   +1 more source

CHARACTERIZATION OF AlGaAs THIN FILMS PREPARED BY RF MAGNETRON SPUTTERING

open access: yesMomento, 2018
Las películas de AlGaAs fueron depositadas por pulverización catódica asistida por campo magnético sobre sustratos de vidrio y Si (100). Se mantuvo constante la temperatura del substrato y se varió la relación de la potencia de los blancos de Al y GaAs ...
Juan D. Losada Losada   +1 more
doaj   +1 more source

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