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Artificial Atoms of Silicon
Justin D. Holmes, Kirk J. Ziegler, Keith P. Johnston, R. Chris Doty, Brian A. Korgel
Journal: MRS Online Proceedings Library Archive / Volume 582 / 1999
Published online by Cambridge University Press: 21 March 2011, H2.5
Print publication: 1999
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Size-monodisperse, stable 15 Å diameter silicon nanocrystals were synthesized in significant quantities using supercritical octanol as a capping ligand. The silicon nanocrystals exhibit an indirect band gap with discrete electronic transitions in the absorbance and photoluminescence excitation (PLE) spectra. The octanol-capped clusters show efficient blue band-edge photoemission with a luminescence quantum yield of 23 % at room temperature.