Abstract: Nd3+ and Nd3+/Yb3+ ion-doped lead-borate glasses were created. For the thermal studies of sample such as glass transition temperature, crystallization temperature and, melting temperature Tm, differential scanning calorimetry (DSC) is done. The X-ray diffraction is used to justify the glassy nature of the samples. UV-VIS-IR of the prepared samples is carried for the studies of absorption bands available in Nd3+ and Nd3+/Yb3+ ion-doped lead-borate glasses. For the studies of fluorescence spectra and energy transfer mechanism the samples were excited at 800nm and spectra is recorded. The Nd3+ glasses exhibited strong NIR emission at 1mol% concentration at 903, 1068, and 1348 nm upon pumping at 800 nm. These transitions were labelled as 4F3/2→4I9/2, 4F3/2→4I11/2, and 4F3/2→4I13/2. Interpretation is given to the effects of multiphonon, cross-relaxation, and OH- group on Nd3+ emission that causes photoluminescence quenching above 1.0mol% Nd3+. Through the co-doping of Nd3+ ion (1mol%) and Yb3+ ion (1mol%) concentrations, the sensitising impact of Nd3+ emission on Yb3+ luminescence is examined. The significant spectrum of Yb3+ absorption and Nd3+ emission, photoluminescence characteristics, has supported the likelihood of energy-transfer (ET) between these ions. The findings show that the Neodymium ion (4F3/2)→ytterbium ion (4F5/2) energy-transfer process is of a non-radiative type controlled by phonon-assisted electric dipole-dipole interaction.
Abstract: Nd3+ and Nd3+/Yb3+ ion-doped lead-borate glasses were created. For the thermal studies of sample such as glass transition temperature, crystallization temperature and, melting temperature Tm, differential scanning calorimetry (DSC) is done. The X-ray diffraction is used to justify the glassy nature of the samples. UV-VIS-IR of the prepared samples ...Show More