EPR, optical absorption and luminescence studies of Cr3+-doped antimony phosphate glasses

UV Emission of Gd3+ in the Presence of Cu2+: Towards Luminescence Quenching through Quantum Cutting?

“…[21] For glass materials, the value n = 2, connected to indirect transitions, is usually employed in fitting experimental results. [22,23] Hence, E opt can be estimated from a plot of (Ea) 1/2 versus photon energy (hn) by extrapolating the linear portion of the plot and determining the intercept on the energy axis. Accordingly, such a plot was constructed from the data in Figure 1 and is shown in Figure 2.…”

“…Linear fits were performed on the linear regions of the absorption edges, and the optical band gap values were determined from the x-axis intercepts of the lines generated by the regression analyses. [23] A plot of the corresponding E opt values is shown in the inset of Figure 2, together with the associated errors in the determinations. Although there was some variation in the E opt values for the different glasses, these were within experimental error and no definite trend was observed with respect to the concentration of CuO.…”

Evolution of Actinyl Peroxide Clusters U28 in Dilute Electrolyte Solution: Exploring the Transition from Simple Ions to Macroionic Assemblies

“…For glass materials, the value n =2, connected to indirect transitions, is usually employed in fitting experimental results 22. 23 Hence, E opt can be estimated from a plot of ( Eα ) 1/2 versus photon energy ( hν ) by extrapolating the linear portion of the plot and determining the intercept on the energy axis. Accordingly, such a plot was constructed from the data in Figure 1 and is shown in Figure 2.…”

“…Accordingly, such a plot was constructed from the data in Figure 1 and is shown in Figure 2. Linear fits were performed on the linear regions of the absorption edges, and the optical band gap values were determined from the x ‐axis intercepts of the lines generated by the regression analyses 23. A plot of the corresponding E opt values is shown in the inset of Figure 2, together with the associated errors in the determinations.…”

Influence of local structural disorders on spectroscopic properties of multi-component CaF2–Bi2O3–P2O5–B2O3 glass ceramics with Cr2O3 as nucleating agent

“…Even though considerable number of spectroscopic studies of Cr 3+ ions doped inorganic glasses are available [8][9][10] such studies on glass ceramics like borophosphates containing Cr 3+ ions mixed with heavy metal oxides like Bi 2 O 3 are very few. Therefore, it is felt worthwhile to A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 3 investigate the local structural disorders and their influence on spectroscopic properties of CaF 2 -Bi 2 O 3 -P 2 O 5 -B 2 O 3 glass ceramics doped with different concentrations of Cr 2 O 3 .…”