Preparation of small silicon carbide quantum dots by wet chemical etching

David Beke, Zsolt Szekrényes, István Balogh, Zsolt Czigány, Katalin Kamarás, Adam Gali

Research output: Contribution to journalArticle

23 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)44-49
Number of pages6
JournalJournal of Materials Research
Volume28
Issue number1
DOIs
Publication statusPublished - Jan 14 2013

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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