Synthesis of luminescent silicon clusters by spark ablation
The synthesis of luminescent nanometer-scale Si clusters by spark ablation from a crystalline Si substrate is described. The cluster source, described in the text, generates clusters in a flowing Ar stream at atmospheric pressure. Electron microscopy reveals that the clusters have diameters in the 2-4 nm size range. The luminescence spectra of the clusters, similar to that of porous Si, are presented.
Additional Information© 1993 American Institute of Physics. Received 26 February 1993; accepted for publication 8 July 1993. We acknowledge support by the NSF Contract No. CTS-8912328. P.C.S. acknowledges support by AT&T.
Published - SAUapl93.pdf