Luminescence improvement of Sm3+ doped fluoro-phosphate glass by silver species
作者： Marwa Ennouri , Ifa Jlassi , Habib Elhouichet
DOI: 10.1016/J.JNONCRYSOL.2020.120397
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摘要: Abstract Sodium fluoro-phosphate glasses co-activated with Sm3+ ions and silver nanoparticles (NPs) were prepared. X-ray diffraction pattern shows the formation of crystalline phases embedded in glassy host. The Raman spectroscopy, TEM measurements, optical absorption, photoluminescence (PL) results indicated that evolution Ag species (including Ag+, molecular-like clusters, nanoparticles) is very sensitive to amount introduced host matrix. absorption spectra show apparition a new visible band assigned surface Plasmon resonance (SPR) (Ag NPs), for high doping levels. Based on PL spectra, Judd-Ofelt parameters radiative properties evaluated. A significant improvement both intensity lifetime noted. All obtained are encouraging possible application doped sensitized from laser emission LEDs phosphors.
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