Spectroscopic Investigation of Rare-Earth Doped Phosphate Glasses Containing Silver Nanoparticles

Abstract

Phosphate glasses having compositions (59.5x)P2O540MgOxAgCl0.5Er2O3, where x = 0, 1.5 mol.% is prepared using melt-quenching technique. Infrared, absorption and photoluminescence spectra of Er 3+ -doped magnesium phosphate glasses have been reported. The amorphous nature of the host glass is conrmed by X-ray diraction technique. Transmission electron microscope image conrms the existence of silver nanoparticles inside the glass matrix. The localized surface plasmon resonance band of silver is found to be located around ≈ 528 nm for the Er 3+ free sample. A frequency upconversion process from infrared to visible is observed on excitation with 797 nm radiation. Furthermore, an enhancement in the emission at 540 nm and 632 nm is found due to the local eld eect of silver nanoparticles. Our ndings may contribute towards the development of solid state laser and sensors.

Silver Nanoparticles Included Er³⁺/Sm³⁺ Co-Doped Phosphate Glass: Evaluation of Thermal Stability and Infrared Absorption

“…As Ag NPs increase, the intensity of the bands is also increase steadily. Attenuation of P=O bond and distortion in PO 4 units are occurs due to presence of Ag NPs [12,13]. Table 3 listed assignment of each peaks for a better understanding.…”

Enhanced Luminescence of Silver Nano-particles Doped Na2O-BaO-Borate Glasses

“…This broad luminescence band may be used to enhance the luminescence of rare earth ions [36]. The energy of emission of all of the silver nanoparticles when plasmon excited oscillate together and may transfer the energy directly to the nearby emission centers like rare earth ions or this collective oscillation may produce the high electric field which may also excite the rare earth ions and help in improving the emission of rare earth ions [34][35][36][37]. This plasmonic phenomenon can be used in enhancing the luminescence of the rare earth ions which used in the LED applications.…”