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Buckley, Sonia M.; Tait, Alexander N.; Moody, Galan; Primavera, Bryce; Olson, Stephen; Herman, Joshua; Silverman, Kevin L.; Papa Rao, Satyavolu; Woo Nam, Sae; Mirin, Richard P.; Shainline, Jeffrey M.
Optics express, 05/2020, Letnik: 28, Številka: 11Journal Article
W centers are trigonal defects generated by self-ion implantation in silicon that exhibit photoluminescence at 1.218 µm. We have shown previously that they can be used in waveguide-integrated all-silicon light-emitting diodes (LEDs). Here we optimize the implant energy, fluence and anneal conditions to maximize the photoluminescence intensity for W centers implanted in silicon-on-insulator, a substrate suitable for waveguide-integrated devices. After optimization, we observe near two orders of magnitude improvement in photoluminescence intensity relative to the conditions with the stopping range of the implanted ions at the center of the silicon device layer. The previously demonstrated waveguide-integrated LED used implant conditions with the stopping range at the center of this layer. We further show that such light sources can be manufactured at the 300-mm scale by demonstrating photoluminescence of similar intensity from 300 mm silicon-on-insulator wafers. The luminescence uniformity across the entire wafer is within the measurement error.
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