Published/Posted: May 1, 2008
Authors: Rossi, A. M.; Murphy, T. E.; Reipa, V.Abstract: Here we explore SiC based QD’s as a stable and biocompatible fluorophores. SiC nanocrystals were prepared by single crystal silicon carbide wafer electrochemical etching and were observed under HrTEM. Particles in the size range of 1-3 nm exhibit stable UV-VIS photoluminescence in aqueous media, acids, and organic solvents. Given that the SiC nanostructures below ~ 3nm would acquire a bandgap above 3 eV that effectively extends their luminescence into the UV range. Moreover, due to the exceptional SiC thermal and chemical stability, such nanostructures could be considered for the UV emitter development and serve as an alternative to the Group-III nitride based semiconductors.
A. M. Rossi, T. E. Murphy and V. Reipa, "Luminescence emission from Silicon Carbide Quantum Dot", NSTI Nanotech, Boston, MA (USA) MO31.705 (2008)