Journal
NANOTECHNOLOGY
Volume 20, Issue 27, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/20/27/275605
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Funding
- Science Foundation Ireland (SFI) [06/IN.1/I85]
- European Commission
- Irish Government's Programme for Research in Third Level Institutions
- National Development Plan 2007-2013
- Science Foundation Ireland (SFI) [06/IN.1/I85] Funding Source: Science Foundation Ireland (SFI)
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Silicon nanocrystals were synthesized at high temperatures and high pressures by the thermolysis of diphenylsilane using a combination of supercritical carbon dioxide and phosphonic acid surfactants. Size and shape evolution from pseudo-spherical silicon nanocrystals to well-faceted tetrahedral-shaped silicon crystals with edge lengths in the range of 30-400 nm were observed with sequentially decreasing surfactant chain lengths. The silicon nanocrystals were characterized by transmission electron microscopy (TEM), energy-dispersive x-ray spectroscopy (EDX), x-ray diffraction (XRD), photoluminescence (PL), scanning electron microscopy (SEM) and Raman scattering spectroscopy.
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