Results 21 to 30 of about 34,551 (258)

Optical nonlinearities of Gallium Nitride [PDF]

open access: yesMRS Internet Journal of Nitride Semiconductor Research, 1997
Luminescence, induced absorption and degenerate four-wave mixing experiments are perform on GaN epilayers grown on a sapphire substrate by MOCVD.We measure the nonlinear behavior of the luminescence spectra near the excitonic resonance, by using an excitation at 4.026 eV from an excimer laser. At low intensities of excitation, spectra show a saturation
H Haag   +5 more
openaire   +1 more source

Gallium nitride high electron mobility transistor with an effective graphene-based heat removal system

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2020
The self-heating effect is a major problem for gallium nitride electronic, optoelectronic and photonic devices. Average temperature increase and non-uniform distribution of dissipated power in the gallium nitride high electron mobility transistor lead to
V. S. Volcheck   +3 more
doaj   +1 more source

Numerical Simulation of Orthogonal Machining of Gallium Nitride via Smoothed Particle Hydrodynamics

open access: yesNUML International Journal of Engineering and Computing, 2022
Gallium Nitride is one of the best candidates for upcoming industrial revolution due to its superior electrical properties over silicon. In the present work, we investigate the chip formation, cutting force and effective stress in diamond machining of ...
Muhammad Haseeb   +2 more
doaj   +1 more source

A sub-critical barrier thickness normally-off AlGaN/GaN MOS-HEMT [PDF]

open access: yes, 2014
A new high-performance normally-off gallium nitride (GaN)-based metal-oxide-semiconductor high electron mobility transistor that employs an ultrathin subcritical 3 nm thick aluminium gallium nitride (Al0.25Ga0.75N) barrier layer and relies on an induced ...
Al-Khalidi, Abdullah   +7 more
core   +1 more source

Electronic Materials with Wide Band Gap: Recent Developments [PDF]

open access: yes, 2014
The development of semiconductor electronics is shortly reviewed, beginning with the development of germanium devices (band gap $E_g=0.66$ eV) after world war II.
Klimm, D.
core   +4 more sources

Large Signal Performance of the Gallium Nitride Heterostructure Field-Effect Transistor With a Graphene Heat-Removal System

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2022
The self-heating effect exerts a considerable influence on the characteristics of high-power electronic and optoelectronic devices based on gallium nitride.
V. S. Volcheck, V. R. Stempitsky
doaj   +1 more source

Strain Effects in Gallium Nitride Adsorption on Defective and Doped Graphene: First-Principles Calculations

open access: yesCrystals, 2018
Transferable, low-stress gallium nitride grown on graphene for flexible lighting or display applications may enable next-generation optoelectronic devices. However, the growth of gallium nitride on graphene is challenging.
Han Yan   +4 more
doaj   +1 more source

Analytical Model for the Optical Functions of Indium Gallium Nitride with Application to Thin Film Solar Photovoltaic Cells

open access: yes, 2012
This paper presents the preliminary results of optical characterization using spectroscopic ellipsometry of wurtzite indium gallium nitride (InxGa1-xN) thin films with medium indium content (0 ...
McLaughlin, D. V. P., Pearce, Joshua M.
core   +3 more sources

Gallium Nitride Power Devices in Power Electronics Applications: State of Art and Perspectives

open access: yesEnergies, 2023
High-electron-mobility transistors based on gallium nitride technology are the most recently developed power electronics devices involved in power electronics applications. This article critically overviews the advantages and drawbacks of these enhanced,
Salvatore Musumeci, Vincenzo Barba
doaj   +1 more source

Indium Nitride and Indium Gallium Nitride layers grown on nanorods [PDF]

open access: yes, 2013
Molecular beam epitaxy has been used to grow InN layers on both Si and SiCsubstrates and In0.5Ga0.5N layers on Si substrates using a nanorod precursor array.
Cherns, David   +6 more
core   +2 more sources

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