Preparation of small silicon carbide quantum dots by wet chemical etching

Beke, Dávid and Szekrényes, Zsolt and Balogh, István and Czigány, Zsolt and Kamarás, Katalin and Gali, Ádám (2013) Preparation of small silicon carbide quantum dots by wet chemical etching. JOURNAL OF MATERIALS RESEARCH, 28 (1). pp. 44-49. ISSN 0884-2914

Preview

Text JMR_Preparation_28_44.pdf Download (351kB) | Preview

Abstract

Fabrication of nanosized silicon carbide (SiC) crystals is a crucial step in many biomedical applications. Here we report an effective fabrication method of SiC nanocrystals based on simple electroless wet chemical etching of crystalline cubic SiC. Comparing an open reaction system with a closed reaction chamber, we found that the latter produces smaller nanoparticles (less than 8 nm diameter) with higher yield. Our samples show strong violet-blue emission in the 410–450 nm region depending on the solvents used and the size. Infrared measurements unraveled that the surface of the fabricated nanoparticles is rich in oxidized carbon. This may open an opportunity to use standard chemistry methods for further biological functionalization of such nanoparticles.

Actions (login required)

Edit Item