X-ray induced luminescence and physical properties of lithium lanthanum borate glass doped with Ce³⁺ for radiation detection material

Lithium lanthanum borate glasses doped with different concentration of Ce³⁺ were synthesized to study the luminescence and physical properties. Glass density was measured by Archimedes' principle and taken to evaluate the molar volume. Density and molar volume value increases with increasing of Ce³⁺ concentration. Glass network of borate former, tetrahedral BO₄ and trigonal BO₃, was proved by Fourier transform infrared spectroscopy. From absorption spectra, these glasses can absorb the ultraviolet radiation. The luminescence spectra under x-ray induction show that glasses emit the photons in the range of 360 – 530 nm wavelength. These emissions correspond to the 5d - ²F_5/2 and 5d - ²F_7/2 transitions of Ce³⁺. The luminescence decay curves were observed and fitted the fast life time values in the order of ten nanoseconds. This Ce³⁺ doped glass performs the interesting properties which can be developed for using as a scintillator in x-ray detection device.