Modification in structural and optical properties of ZnO, CeO2 doped Al2O3–PbO–B2O3 glasses

The structural and optical analysis of glasses is carried out by XRD, FTIR, density and UV visible spectroscopic measurement techniques. XRD results have confirmed the glassy nature of the samples. The FTIR spectral analysis reveals that with the combined presence of ZnO and CeO2 contents in Al2O3–PbO–B2O3 glasses, more BO3 groups are transformed into BO4. The optical analysis reveals that optical band gap energy decreases more for CeO2–ZnO–Al2O3–PbO–B2O3 glasses (from 2.28 to 1.84 eV). The presence of CeO2 and ZnO in the glass samples causes more compaction of the borate network due to the formation of more BO4 groups and the presence of ZnO4 groups, which results an increase in density, refractive index and decrease of molar volume.