Abstract
The effect of the incorporation of Er2O3-doped particles on the structural and luminescence properties of phosphate glasses was investigated. A series of different Er2O3-doped TiO2, ZnO, and ZrO2 microparticles was synthesized using soft chemistry and then added into various phosphate glasses after the melting at a lower temperature than the melting temperature. The compositional, morphological, and structural analyses of the particles-containing glasses were performed using elemental mapping by field emission-scanning electron microscopy (FE-SEM) with energy dispersive x-ray spectrometry (EDS) and x-ray diffraction (XRD). Additionally, the luminescence spectra and the lifetime values were measured to study the influence of the particles incorporation on the spectroscopic properties of the glasses. From the spectroscopic properties of the glasses with the composition 50P2O5-40SrO-10Na2O, a large amount of the Er2O3-doped particles is thought to dissolve during the glass melting. Conversely, the particles were found to survive in glasses with a composition 90NaPO3-(10 − x)Na2O-xNaF (with x = 0 and 10 mol %) due to their lower processing temperature, thus clearly showing that the direct doping method is a promising technique for the development of new active glasses.
Highlights
Among rare-earth (RE) ions, erbium (Er3+ ) ions have been widely studied as dopants in different host matrices due to their emission at around 1.5 μm, which makes them suitable for applications such as fiber lasers and amplifiers for telecommunications [1]
For 5 min, the particles were added at 550 ◦ C and the glass melts were quenched after a 3 min dwell time
Particles-containing glasses were fabricated using the direct doping method, which consisted of the incorporation of Er2O3-doped TiO2, ZnO, and ZrO2 particles into the glasses after their melting
Summary
Among rare-earth (RE) ions, erbium (Er3+ ) ions have been widely studied as dopants in different host matrices due to their emission at around 1.5 μm, which makes them suitable for applications such as fiber lasers and amplifiers for telecommunications [1]. Phosphate glasses exhibit high RE ions solubility [12], leading to quenching phenomenon occurring at very high concentrations of RE [9,13] Due to their outstanding optical properties, RE-doped phosphate glasses have recently become appealing for the engineering of photonic devices for optical communications [14], laser sources, and optical amplifiers [9,13,15,16,17]. A new route was developed in order to control the local environment of the RE ions independently of the glass composition: the direct doping method [23] With this technique, the particle matrix allows high RE content in a high dispersion state, avoiding the quenching effect independently of the glass composition [24]. A full characterization of the morphological and luminescence properties of the different particles-containing glasses was reported
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