材料期刊网

A series of (90–x)Li2B4O7-10Nb2O5-xNd2O3 glass samples (x=0, 5 mol.%, 10 mol.%, 15 mol.%, 20 mol.% and 25 mol.%) were synthesized using melt quenching technique. X-ray diffraction (XRD), differential thermal analyzer (DTA), Fourier transformed infrared (FTIR), ultraviolet-visible-near-infrared (UV-Vis-NIR) spectrometer and photoluminescence (PL) spectroscopic characteri-zations were made to examine the influence of Nd3+ concentration on the physical, structural and optical properties. Various physical properties such as glasses density, molar volume, thermal stability, ion concentration, polar on radius, inter-nuclear distance, field strength, cut-off wavelength, energy band gap and Urbach energy were calculated. The samples were amorphous in nature and con-firmed from XRD pattern. The FTIR spectra revealed the presence of BO3 and BO4 functional groups. UV-Vis-NIR spectra exhibited nine prominent bands centered at 353, 430, 475, 524, 583, 681, 745, 803, 875 nm corresponding to the transitions from the ground state to4D3/2,2P1/2,2G9/2,4G7/2,4G5/2,4F9/2,4F7/2,4F5/2,4F3/2 excited states, respectively. Moreover, the emission spectra at 355 nm ex-citation displayed three peaks centered at 903 nm (4F3/2→4I9/2), 1059 nm (4F3/2→4I11/2) and 1333 nm (4F3/2→4I13/2), respectively. Fluo-rescence lifetime was recorded between 53.69 to 28.43 μs. It was found that varying concentration of Nd3+ ions strongly affected the physical, structural and optical properties of the glass samples.