Silicon-rich oxynitride hosts for 1.5 μm Er3+ emission fabricated by reactive and standard RF magnetron sputtering
2012
Abstract This study compares the erbium emission from different Si-rich silicon oxynitrides matrices fabricated by magnetron sputtering. The Er-doped layers were grown by two different sputtering configurations: (i) standard co-sputtering of three confocal targets (Er 2 O 3 , Si 3 N 4 and SiO 2 ) under Ar plasma, and (ii) reactive co-sputtering under Ar + N 2 plasma of either three (Er 2 O 3 , pure Si and SiO 2 ) or two targets (Er 2 O 3 and pure Si). The last reactive configuration was found to offer the best Er 3+ PL intensity at 1.5 μm. This highest PL intensity was found comparable to the corresponding emission from Er-doped silicon-rich silicon oxide.
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