Effect of Dy3+ ions on physical, structural and thermal properties of ZnNaPbB glasses

Abstract In this report, inspired by the excellent spectroscopic characteristics of dysprosium (Dy3+) ions doped borate glasses, a series with the composition (70-x)B2O3-10ZnO-10PbO-10Na2CO3-xDy2O3 (here ‘x’ have the values as 0.1, 0.5, 1.0, 1.5 and 2.0 in mol % ) was made using the melt quenching process and named as ZnNaPbBDy0.1 to ZnNaPbBDy2.0. Here we study the physical, structural and thermal properties of Dy3+ ions doped Zinc Sodium Lead Borate (ZnNaPbB) glasses through different characterization techniques like Fourier transform infrared (FT-IR), Raman spectroscopy, Differential scanning calorimetry (DSC) and decay spectroscopy. Several physical parameters were evaluated to assess the effect of Dy3+ inclusion. FT-IR and Raman spectra confirm the presence of BO3 and BO4 structural units. The data recorded by DSC spectra have been used to predict the glass transition temperature (Tg). The nature of decay spectra was estimated which diverges from exponential to non-exponential at higher concentrations. The decay spectral data is used to calculate the experimental lifetimes for all the glass samples. The Inoakutti Hirayama (I-H) model and Dexter’s plot are used to confirm the type of interaction between the donor and acceptor Dy3+- Dy3+ ions is dipole–dipole in nature that is responsible for the emission intensity quenching with concentration. All the above results might be advantageous for variety of applications in photonic devices.