Results 11 to 20 of about 1,638,771 (254)

Upping the internal quantum efficiency of green light‐emitting diodes by employing a graded AlGaN barrier and an electron blocking layer

open access: yesIET Optoelectronics, 2021
Two different device structures are numerically studied, and their optoelectronic characteristics with standard structure are compared. The authors minimized the uneven carrier distribution across the active region. By replacing the first quantum barrier
Muhammad Usman   +3 more
doaj   +1 more source

STUDY OF THE PROPERTIES OF DIFFUSION-HARDENING COMPOSITE SOLDERS MODIFIED WITH A Ti-Mo POWDER MIXTURE

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
The article discusses the possibility of regulating the properties of diffusion-hardening solder based on low-melted gallium-tin, gallium-indium-tin, gallium-tin-zinc alloys and a solid component consisting of a copper-tin alloy powder by introducing a ...
V.М. Skachkov   +3 more
doaj   +1 more source

Parallel connected GaN E‐HEMT VSI‐based servo drives for PMSMs

open access: yesIET Electric Power Applications, 2022
The operation of parallel‐connected servo drives has the advantages of increasing the torque (hence the power) capacity, reliability, redundancy and modularity.
Huseyin Yuruk, Ozan Keysan
doaj   +1 more source

900 V GaN-based sine-wave inverters for three-phase industrial applications

open access: yesThe Journal of Engineering, 2019
GaN devices are gradually getting attention within the industry along with SiC as a potential wide bandgap device. At present, there are almost no high-voltage GaN devices with voltage >650 V, which makes an inverter design difficult for a three-phase ...
Nilanjan Mukherjee   +3 more
doaj   +1 more source

Linear broadband interference suppression circuit based on GaN monolithic microwave integrated circuits

open access: yesIET Circuits, Devices and Systems, 2023
This paper presents simulation and measurement results of a 2–4 GHz octave bandwidth interference suppression circuit. The circuit accomplishes the function of a tunable frequency notch through an interferometer architecture.
Megan C. Robinson   +2 more
doaj   +1 more source

Mechanochemical synthesis of intermetallic compounds in the system gallium – ruthenium

open access: yesChimica Techno Acta, 2021
The interaction of a solid inert metal Ru with liquid active metal Ga during mechanical activation in a high-energy planetary ball mill was studied using the X-ray diffraction and the high resolution scanning electron microscopy with energy dispersive X ...
T. F. Grigoreva   +3 more
doaj   +1 more source

New M+, M3+-arsenates – the framework structures of AgM3+(HAsO4)2 (M3+ = Al, Ga) and M+GaAs2O7 (M+ = Na, Ag)

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
The crystal structures of hydrothermally synthesized silver(I) aluminium bis[hydrogen arsenate(V)], AgAl(HAsO4)2, silver(I) gallium bis[hydrogen arsenate(V)], AgGa(HAsO4)2, silver gallium diarsenate(V), AgGaAs2O7, and sodium gallium diarsenate(V ...
Karolina Schwendtner, Uwe Kolitsch
doaj   +1 more source

Thio-, seleno- and telluro-ether complexes of aluminium(iii) halides: synthesis, structures and properties [PDF]

open access: yes, 2014
The reaction of AlCl3 with Me2E (E = S, Se or Te) or nBu2E (E = Se or Te) in CH2Cl2 under rigorously anhydrous conditions gave the pseudo-tetrahedral complexes [AlCl3(R2E)].
Levason W   +11 more
core   +1 more source

Gallium compounds in nuclear medicine and oncology

open access: yesMain Group Metal Chemistry, 2014
An overview of the most important gallium compounds in nuclear medicine and oncology in the two last decades, with an emphasis on the last decade (especially the last 5 years), is given in this review.
Mikuš Peter   +4 more
doaj   +1 more source

SyNTHESIS OF GALLIUM SULFATE

open access: yesТонкие химические технологии, 2017
Trivalent gallium compounds are structural analogs of the elements with variable valency in (+3) oxidation state that can be used as cathode materials for electrochemical power devices (iron, vanadium, chromium).
V. Yu. Proydakova   +3 more
doaj   +1 more source

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