Impact of ZnO Addition on Er3+ Near-Infrared Emission, the Formation of Ag Nanoparticles, and the Crystallization of Sodium Fluorophosphate Glass

Abstract

The impact of the progressive addition of ZnO up to 5 mol% on the thermal, structural, and optical properties of Er3+-doped phosphate glasses within the system NaPO3-NaF-ZnO-Ag2O is discussed. The glass network was found to depolymerize upon the addition of ZnO. This promotes a slight increase in the intensity of the emission at 1.5 µm as well as enhances the silver ions clustering ability under the heat treating. The Ag-nanoparticles formed after moderate heat-treatment can further enhance the emission at 1.5 µm, whereas an excessive amount of the clusters leads to the opposite effect. The addition of ZnO helps to slightly increase the glass ability of the system. The crystallization behavior study revealed that surface crystallization is observed for all the glasses. It is found that even a small ZnO addition changes the crystalline phases formed after devitrification. Moreover, the addition of ZnO decreases the crystallization tendency of the glass.

Influence of barium substitution on the physical, thermal, optical and luminescence properties of Sm3+-doped metaphosphate glasses for reddish orange light applications

“…It should be noted that an inverse trend in emission intensity is typically observed with the depolymerization of the phosphate network, as reported in earlier studies. 41,42 These results can likely be explained by the moderation of the local ligand eld strength due to the modication of the glass network resulting from the replacement of Na + with Ba 2+ . In this context, Na + cations with the higher eld strength exhibit a greater preference for coordination with NBOs compared to Ba 2+ cations.…”

Transition Metals (Cr3+) and Lanthanides (Eu3+) in Inorganic Glasses with Extremely Different Glass-Formers B2O3 and GeO2

“…In defining the spectroscopic properties of amorphous materials, a significant contribution is the composition of the glass matrices. In particular, the type and concentration of the network-former and/or network-modifier influence structural [ 10 , 11 ], thermal [ 12 ], and optical properties [ 13 , 14 , 15 ]. Recently, Jiao et al [ 16 ] presented that increasing the boron oxide ratio visibly improves the luminescence characterizations of Sm 3+ , Dy 3+ , and Tb 3+ ions in glass systems.…”