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- W2200838845 abstract "We report a Si nanocrystal thin film consisting of free-standing Si nanocrystals, which can emit white light and show positive optical gains for its red, green and blue (RGB) components under ultraviolet excitation. Si nanocrystals with ϕ = 2.31 ± 0.35 nm were prepared by chemical etching of Si powder, followed by filtering. After being mixed with SiO2 sol-gel and thermally annealed, a broadband photoluminescence (PL) from the thin film was observed. The RGB ratio of the PL can be tuned by changing the annealing temperature or atmosphere, which is 1.00/3.26/4.59 for the pure white light emission. The origins of the PL components could be due to differences in oxygen-passivation degree for Si nanocrystals. The results may find applications in white-light Si lasing and Si lighting." @default.
- W2200838845 created "2016-06-24" @default.
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- W2200838845 date "2015-11-05" @default.
- W2200838845 modified "2023-10-17" @default.
- W2200838845 title "White light emission and optical gains from a Si nanocrystal thin film" @default.
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- W2200838845 doi "https://doi.org/10.1088/0957-4484/26/47/475203" @default.
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