Investigation on Physical, Structural and Luminescence Properties of Nickel Oxide Doped Lithium Strontium Borate Glasses

Abstract

Nickel oxide doped lithium strontium borate glasses were prepared by conventional melt-quench method. X-ray diffraction studies confirmed the amorphous nature of the sample. Density increases whereas molar volume decreases with the addition of nickel oxide. Glass bond density, boron-boron separation and oxygen packing density were estimated using standard formulae. Polaron radius, inter ionic distances and field strength exhibit composition dependent trends. Fourier transform infrared spectroscopic studies revealed the presence of short-range structural units such as diborate (B4O7 2–), dipentaborate (B5O17 2–), pyroborate (B2O5 4–) and metaborate units (BO2O–) in the borate glasses. Photoluminescence studies revealed four emission bands centered at 486, 521, 547 and 623 nm. An intense emission peak was observed at 487 nm. Commission internationale de l’éclairageand correlated colour temperature studies suggested that the investigated glasses emit blue light at 1741-1809 K.