Optical characterization of Sm3+ and Dy3+:ZnO–PbO–B2O3 glasses

Here, we present the results of the analysis of Sm3+ or Dy3+ (0.5 mol%) ions doped heavy metal oxide (HMO)-based zinc lead borate (ZLB) glasses. Optical measurements such as absorption, emission spectra, lifetimes, XRD, DSC profiles have been carried out. The emission spectrum of Sm3+:ZLB has shown the emission transitions of 4G5/2 → 6H5/2 (563 nm), 4G5/2 → 6H7/2 (598 nm), 4G5/2 → 6H9/2 (646 nm), 4G5/2 → 6H11/2 (708 nm) with λexc: 401 nm (6H5/2 → 4F7/2). In the case of the Dy3+:ZLB glass, emission transitions of 4F9/2 → 6H15/2 (485 nm), 4F9/2 → 6H13/2 (575 nm) and 4F9/2 → 6H11/2 (664 nm) with λexi: 447 nm (6H15/2 → 4I15/2) have been identified. Energy level schemes relating to the emission mechanisms involved in Sm3+ and Dy3+ glasses have been given.