Abstract
Ce3+:SiO2-ZrO2 samples doped with and without plasmonic nanoparticles of copper were prepared by the easy and economic non-hydrolytic sol–gel method. Structural, morphological, and optical studies were done on the samples after being dried at room temperature and annealed at 800 °C. Fourier transform infrared (FTIR) spectra confirms the formation of the host glass SiO2-ZrO2 from the asymmetric stretching of Si-O-Zr bond. Tetragonal ZrO2 and plasmonic copper nanoparticles formation was affirmed from the X-ray diffraction (XRD) spectra. Transmission electron microscopy (TEM) confirms the formation of plasmonic nanoparticles of copper. UV/Visible spectra show an absorption around 330 nm. The photoluminescence (PL) spectra show emission centered around 469 nm; an enhancement in the PL intensity occurred due to the localized surface plasmon resonance (LSPR) effect of the plasmonic nanoparticles of copper.
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