Platinum Nanoparticles on Gallium Nitride Surfaces: Effect of Semiconductor Doping on Nanoparticle Reactivity

В статье представлены результаты исследования возможности применения при криогенных температурах водородного уровня дискретных приборов и монолитных схем на основе нитрида галлия в составе малошумящих усилителей сантиметрового и миллиметрового диапазона длин волн для приемных устройств систем дистанционного зондирования Земли из космоса и в составе криогенных комплексов наблюдения космического пространства. The article presents the results of the research on the possibility of using discrete devices and gallium nitride monolithic circuits at the cryogenic temperatures of hydrogen level as part of low-noise amplifiers of centimeter and millimeter-wave bands used in receivers of Earth remote sensing space systems and in cryogenic systems for space observation.

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Luminescence properties of gallium nitride layers grown on silicon carbide substrates by gas-phase epitaxy in a chloride system

Semiconductors ◽

10.1134/1.1187206 ◽

1997 ◽

Vol 31 (5) ◽

pp. 523 ◽

Cited By ~ 5

Author(s):

A. S. Zubrilov

Keyword(s):

Silicon Carbide ◽

Gallium Nitride ◽

Gas Phase ◽

Luminescence Properties ◽

Chloride System ◽

Nitride Layers

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Powerful Gallium Nitride Microwave Transistors on Silicon Substrates

Nanotechnologies in Russia ◽

10.1134/s1995078020020123 ◽

2020 ◽

Vol 15 (2) ◽

pp. 169-174

Author(s):

Yu. V. Khrapovitskaya ◽

M. Y. Chernykh ◽

I. S. Ezubchenko ◽

Yu. V. Grishchenko ◽

I. O. Mayboroda ◽

...

Keyword(s):

Gallium Nitride ◽

Silicon Substrates ◽

Microwave Transistors

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Green synthesis: Proposed mechanism and factors influencing the synthesis of platinum nanoparticles

Green Processing and Synthesis ◽

10.1515/gps-2020-0041 ◽

2020 ◽

Vol 9 (1) ◽

pp. 386-398 ◽

Cited By ~ 1

Author(s):

Mahmood S. Jameel ◽

Azlan Abdul Aziz ◽

Mohammed Ali Dheyab

Keyword(s):

Green Synthesis ◽

Reaction Temperature ◽

Platinum Nanoparticles ◽

Energy Requirement ◽

Average Particle Size ◽

High Energy ◽

Energy Utilization ◽

Critical Parameters ◽

Synthesis Process ◽

Average Particle

AbstractPlatinum nanoparticles (Pt NPs) have attracted interest in catalysis and biomedical applications due to their unique structural, optical, and catalytic properties. However, the conventional synthesis of Pt NPs using the chemical and physical methods is constrained by the use of harmful and costly chemicals, intricate preparation requirement, and high energy utilization. Hence, this review emphasizes on the green synthesis of Pt NPs using plant extracts as an alternative approach due to its simplicity, convenience, inexpensiveness, easy scalability, low energy requirement, environmental friendliness, and minimum usage of hazardous materials and maximized efficiency of the synthesis process. The underlying complex processes that cover the green synthesis (biosynthesis) of Pt NPs were reviewed. This review affirms the effects of different critical parameters (pH, reaction temperature, reaction time, and biomass dosage) on the size and shape of the synthesized Pt NPs. For instance, the average particle size of Pt NPs was reported to decrease with increasing pH, reaction temperature, and concentration of plant extract.

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