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- W2068208602 abstract "We report optical gain enhancements in Si nanocrystals (Si-NCs) via hydrogenation and Ce3+ ion doping. Variable stripe length technique was used to obtain gains. At 0.3 W/cm2 pumping power density of pulsed laser, net gains were observed together with gain enhancements after hydrogenation and/or Ce3+ ion doping; gains after loss corrections were between 89.52 and 341.95 cm−1; and the photoluminescence (PL) lifetime was found to decrease with the increasing gain enhancement. At 0.04 W/cm2 power density, however, no net gain was found and the PL lifetime increased with the increasing PL enhancement. The results were discussed according to stimulated and spontaneous excitation and de-excitation mechanisms of Si-NCs." @default.
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- W2068208602 date "2014-07-25" @default.
- W2068208602 modified "2023-10-03" @default.
- W2068208602 title "Enhancing optical gains in Si nanocrystals via hydrogenation and cerium ion doping" @default.
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- W2068208602 doi "https://doi.org/10.1063/1.4891506" @default.
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