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In the present work, photoluminescence (PL) and photoluminescence excitation (PLE) spectroscopy were used to study oxidized porous silicon (OPS) doped with Er by electrochemical migration. Three types of OPS were investigated: (a) partially oxidized PS (POPS); (b) fully oxidized PS (FOPS); (c) oxidized PS co-doped with Fe (OPS:Fe). The OPS consists of oxide, Si nanoclusters and voids, and their composing...
In this work we report the latest improvements in integrated optical waveguides based on oxidized porous silicon. Remarkably low propagation loss of 0.2dB/cm in the visible is demonstrated. Straight waveguides of 1–10cm long were fabricated in N + -type silicon substrates. Thickness of core region of all fabricated waveguides was of 8μm while thickness of cladding layer was of 0.8, 1.5, and...
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