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Amorphous Si 3 B 3 N 7 ceramic shows intrinsic photoluminescence. Three distinctive emission regions have been observed. Excitation with wavelengths between 254 and 330nm stimulates intense blue emissions with peak maxima ranging from 447 to 479nm. Exciting between 315 and 420nm results in two broad emission peaks; the first in the range between 400 and 440nm, and the second...
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