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- W2020387718 abstract "Si quantum dots/SiO2 multilayers were prepared by annealing a-Si:H/SiO2 stacked structures at 1100 °C . Photo- and electro-luminescence band around 750 nm can be observed from Si QDs/SiO2 multilayers due to the recombination of electron-hole pairs in Si QDs/SiO2 interfaces. The electro-luminescence intensity was obviously enhanced after post hydrogen annealing at 400 °C. Electron spin resonance measurements were used to characterize the change of the defect states after hydrogen annealing. It is found that there exists a-centers (g value = 2.006), which is related to the Si dangling bonds in Si QDs in our samples. Hydrogen annealing can significantly reduce non-luminescent a-centers and enhance the electro-luminescence intensity consequently." @default.
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- W2020387718 date "2012-09-01" @default.
- W2020387718 modified "2023-10-16" @default.
- W2020387718 title "Enhanced luminescence from Si quantum dots/SiO2 multilayers by hydrogen annealing" @default.
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- W2020387718 doi "https://doi.org/10.1016/j.jnoncrysol.2011.12.009" @default.
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