Abstract
An integrated photonic chitosan optical sensor was obtained via preparation of chitosan-based silica-phosphate nano-composites doped with 1 mol % of Er3+ ions using sol gel technique. The prepared nano-composites were investigated by using the Fourier transform infrared (FTIR) and the X-ray diffraction (XRD). The morphology of the prepared nano-composites was determined by field emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HRTEM). The near infrared (NIR) luminescence spectra results indicated the presence of 4I13/2 → 4I15/2 transition for Er3+ ions at about 1.54 µm confirming that the chitosan-based silica-phosphate/Er3+ nano-composites are promising candidates for planar wave guide applications in the NIR region.
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Ahmed, E.H., Hashem, A.I., Adlung, M. et al. Tailoring Chitosan Nanocomposites for Planar Optical Waveguide Applications. Polym. Sci. Ser. A 64, 342–353 (2022). https://doi.org/10.1134/S0965545X22700122
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DOI: https://doi.org/10.1134/S0965545X22700122