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Abstract Glasses of composition (mol%) 75KPO 3 -(25-x)MoO 3 -xNd 3 + , with 0 ≤ x ≤ 1.0, have been prepared and characterized. Thermal and structural properties of the glasses were studied by Differential… Click to show full abstract
Abstract Glasses of composition (mol%) 75KPO 3 -(25-x)MoO 3 -xNd 3 + , with 0 ≤ x ≤ 1.0, have been prepared and characterized. Thermal and structural properties of the glasses were studied by Differential Scanning Calorimetry (DSC) and Raman scattering spectroscopy. The thermal stability against crystallization on heating was evaluated. Absorption spectra in the visible and infrared regions were collected and analysed, and photoluminescence excitation and emission spectra were obtained under 804 nm diode laser excitations. Using the Judd-Ofelt formalism, the Ω 2 , Ω 4 , and Ω 6 parameters and the radiative lifetime ( τ r ) were calculated for the 4 F 3/2 excited state. A fluorescence quantum efficiency for this level ( QE = τ f / τ r ) of 58% was determined for glass with x = 0.6.
Journal Title: Journal of Non-crystalline Solids
Year Published: 2017
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