Synthesis and characterization of manganese-doped silicon nanoparticles: Bifunctional paramagnetic-optical nanomaterial

Xiaoming Zhang, Marcin Brynda, R. David Britt, Elizabeth C. Carroll, Delmar S. Larsen, Angelique Y. Louie, Susan M. Kauzlarich

Research output: Contribution to journalArticle

68 Scopus citations

Abstract

Mn doped Si nanoparticles have been synthesized via a low-temperature solution route and characterized by X-ray powder diffraction, transmission electron microscopy, optical and emission spectroscopy, and by electron paramagnetic resonance (EPR). The particle diameter was 4 nm, and the surface was capped by octyl groups. Mn doping at 5% resulted in a green emission with a slightly lower quantum yield than undoped Si nanoparticles prepared by the same method. Mn2+ doped into the nanoparticle is confirmed by EPR hyperfine, and the charge carrier dynamics were probed by ultrafast transient absorption spectroscopy. Both techniques are consistent with Mn2+ on or close to the surface of the nanoparticle.

Original languageEnglish (US)
Pages (from-to)10668-10669
Number of pages2
JournalJournal of the American Chemical Society
Volume129
Issue number35
DOIs
StatePublished - Sep 5 2007

ASJC Scopus subject areas

  • Chemistry(all)

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    Zhang, X., Brynda, M., Britt, R. D., Carroll, E. C., Larsen, D. S., Louie, A. Y., & Kauzlarich, S. M. (2007). Synthesis and characterization of manganese-doped silicon nanoparticles: Bifunctional paramagnetic-optical nanomaterial. Journal of the American Chemical Society, 129(35), 10668-10669. https://doi.org/10.1021/ja074144q