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- W3098657946 abstract "The effect of quantum confinement on the direct bandgap of spherical Si nanocrystals has been modelled theoretically. We conclude that the energy of the direct bandgap at the $Gamma$-point decreases with size reduction: quantum confinement enhances radiative recombination across the direct bandgap and introduces its red shift for smaller grains. We postulate to identify the frequently reported efficient blue emission (F-band) from Si nanocrystals with this zero-phonon recombination. In a dedicated experiment, we confirm the red shift of the F-band, supporting the proposed identification." @default.
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- W3098657946 date "2010-03-09" @default.
- W3098657946 modified "2023-10-12" @default.
- W3098657946 title "Direct bandgap optical transitions in Si nanocrystals" @default.
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- W3098657946 doi "https://doi.org/10.1134/s0021364009240059" @default.
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