Ag and Si Codoped Phosphate Glasses: Plasmonic Nanocomposites with Enhanced UV Transparency

摘要: The use of silicon powder to produce plasmonic Ag nanocomposite phosphate glasses which also exhibit improved transparency in the ultraviolet (UV) is proposed. Ag2O/Si codoped were prepared a barium-phosphate matrix by simple melt-quench method ambient atmosphere. as-prepared enhanced UV transparency, whereby surface plasmon resonance nanoparticles (NPs) manifested for with higher Ag2O contents. 31P nuclear magnetic spectroscopy consistent formation P–O–Si bonds, thus suggesting their possible role on light transmission. Consequently, model was presented accounting influence polymerization network concomitant creation highly reactive oxygen species. Further exploiting proposed species, real-time spectroscopic study response NPs Ag/Si glass samples carried out during an situ thermal processing. temperature dependence particle precipitation studied 400°C–430°C range, from Arrhenius-type plot allowed estimating activation energy process at 3.42 (±0.38) eV. Ultimately, vanishing luminescence ascribed Ag+ ions observed heat-treated sample, high reactivity acquired matrix. Silicon appears promising producing transparent high-performance optics and reduction nanocomposites valuable photonic (nanoplasmonic) applications.