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Synthesis of Water‐Soluble Blue Photoluminescent Silicon Nanocrystals with Oxide Surface Passivation
Author(s) -
Lin ShengWei,
Chen DongHwang
Publication year - 2009
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200800677
Subject(s) - passivation , nanocrystal , photoluminescence , oxide , quantum yield , materials science , silicon , nanotechnology , silicon oxide , yield (engineering) , optoelectronics , chemical engineering , optics , physics , composite material , layer (electronics) , metallurgy , silicon nitride , engineering , fluorescence
Water‐soluble silicon nanocrystals with oxide surface passivation are synthesized via a facile solution route. The nanocrystal (see image) exhibit strong and stable blue photoluminescence in water with a high quantum yield, of about 12% over 6 months, due to the recombination of electron–hole pairs across the Γ–Γ direct band gap and via the surface oxide‐related radiative centers.