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Strong Narrow-Band Luminescence from Silicon-Vacancy Color Centers in Spatially Localized Sub-10 nm Nanodiamond.

Adv Sci Lett 2011 Feb;4(2):512-515

Center for Nanoscale Materials and Biointegration (CNMB), University of Alabama at Birmingham, Department of Physics, Birmingham, Alabama 35294-1170, USA.

Discrete nanodiamond particles of 500 nm and 6 nm average size were seeded onto silicon substrates and plasma treated using chemical vapor deposition to create silicon-vacancy color centers. The resulting narrow-band room temperature photoluminescence is intense, and readily observed even for weakly agglomerated sub-10 nm size diamond. This is in contrast to the well-studied nitrogen-vacancy center in diamond which has luminescence properties that are strongly dependant on particle size, with low probability for incorporation of centers in sub-10 nm crystals. Read More

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February 2011
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