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- W2027257124 abstract "Paper presents the synthesis of single crystalline α-Si3N4 nanowires and the comparison of their photoluminescence spectra between room (298 K) and low temperature (77 K) under excitation with 362 nm. The emission spectrum obtained at temperature 77 K consists of three sharp lines peaked at 389 nm (3.19 eV), 410 nm (3.02 eV), and 434 nm (2.86 eV). However, the PL spectrum at room temperature has a broad strong emission band centered at 425 nm, which can be fitted into three broad peaks at 404 nm (3.07 eV), 425 nm (2.92 eV), and 451 nm (2.75 eV). These peaks are related to the existing defect levels in the gap of Si3N4 include SiSi, N−, Si0 and Si−. Compared to the PL spectrum of the Si3N4 nanowires at 298 K, blue-shift of the peak positions and stronger of the emission bands are observed in the PL spectrum of the Si3N4 nanowires at 77 K." @default.
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- W2027257124 date "2012-10-01" @default.
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- W2027257124 title "Room and low temperature photoluminescence properties of single crystalline α-Si3N4 nanowires" @default.
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- W2027257124 doi "https://doi.org/10.1016/j.matlet.2012.06.062" @default.
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