Continuous-Mode Laser Ablation at the Solid鈥揕iquid Interface of Pelletized Low-Cost Materials for the Production of Luminescent Silicon Carbide Nanocrystals

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• 作者：M. Carmen Ortega-Li茅bana ; Jos茅 L. Hueso ; Raul Arenal ; Ruth Lahoz ; Germ谩n F. de la Fuente ; Jes煤s Santamar铆a
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：January 29, 2015
• 年：2015
• 卷：119
• 期：4
• 页码：2158-2165
• 全文大小：384K
• ISSN：1932-7455

文摘

We report on the fabrication of silicon carbide (SiC) nanocrystals using a continuous scanning mode laser for the ablation of pelletized SiC microparticles. As a major advantage, we propose the in situ generation and collection of freestanding nanoparticles in an ethanol liquid medium and the use of cost-effective SiC targets in comparison with those commercially available or synthesized after multiple steps. The SiC NPs exhibit luminescent properties under UV exposure and excellent colloidal stability for extended periods of time. The influence of a more oxidizing solvent such as water is also evaluated as the collecting medium.