Nonthermal Plasma Synthesis of Gallium Nitride Nanoparticles: Implications for Optical and Electronic Applications

Abstract

Group III nitrides, such as gallium nitride (GaN), play an important role in electroluminescent devices and power electronics. They are also increasingly used as photocatalysts and battery materials. In pursuit of increased flexibility and reduced cost, there are many attempts to synthesize these materials in nanocrystal form via a range of methods. In this work, we demonstrate the synthesis of GaN nanocrystals using radiofrequency nonthermal plasma. This method allows for control over both the crystallinity of the nanoparticles and their size. In addition, we see little change in the surface composition upon exposure to air, as evaluated using Fourier transform infrared spectroscopy. These results point to the promise of this method for effective group III nitride nanoparticle synthesis.

Vacancy-modified few-layered GaN crystal for novel high-temperature energy storage

“…2i), the peaks at 397.2 eV and 395.6 eV are related to the Ga–N bond and Ga–O–N bond, 32 and the peak located at 393.6 eV was attributed to the presence of defects. 33,34 The presence of the element O was attributed to abundant defects and active sites that promoted the absorption of O atoms and generation of oxygen functional groups, which were beneficial in improving the pseudocapacitance reaction and increasing the electrochemical properties of the electrode material, confirming the previously reported results. 14,33,35…”

半导体纳米晶体的冷等离子体合成：原理、进展和展望

“…Ho等人 [86] 则采用三甲基镓和NH 3 作为前驱体, 成 功合成了氮化镓(GaN)纳米晶体. 暴露在空气中的GaN 纳米晶体表面成分几乎没有变化, 但没有展现出明显 的PL, 这可能与纳米晶体表面缺陷引起的非辐射复合 有关.…”

Photonic Properties of Thin Films Composed of Gallium Nitride Quantum Dots Synthesized by Nonequilibrium Plasma Aerotaxy

“…Control of contamination is important. For example, the use of metalorganics in other nonequilibrium plasma synthesis of GaN QDs can result in material that is not photoluminescent, 20 presumably because of organic residues in the product. 21 Finally, it is a flexible method because the nanocrystals have bare surfaces and can be deposited from aerosols in numerous ways.…”