Spectroscopic investigation of Dy2O3 doped B2O3-SiO2-Na2O-K2O glass for W-LEDs and laser application

B 2 O 3 –SiO 2 –Na 2 O–K 2 O–Dy 2 O 3 glasses were prepared and study for their spectroscopic and physical properties in detail. The density of present BSNK glasses increases with an increase in Dy-ions concentration. Moreover, Dy-ion concentration ( N ) and field Strength also show an increasing trend. Absorption spectra exhibit eight characteristic peaks in Vis and NIR region. The trend in JO parameters is Ω 2 > Ω 6 > Ω 4 for the BSNKDy1.5 glass sample with a higher value of Ω 2 . Six transitions are observed in the excitation spectra (300–500 range and λ em = 573 nm) of the BSNKDy samples. Emission cross section ( σ p ( λ p )) for 4 F 9/2 → 6 H 13/2 transition has the highest value among other transition of NSNKD1.5 glass. The quantum efficiency for BSNKDY1.5 glass is 55%. The CIE coordinates and CCT-value for BSNKDy glasses are (0.37, 0.41) and 4461 K, respectively. Hence, these are suitable for high-gain, continuous low-threshold laser action and W-LEDs. Graphical abstract