Combustion synthesis and luminescence studies of Eu (III) activated LiBaBO3 inorganic phosphor

Abstract

This work offered study the rare earth doped LiBaBO3 phosphor to reveal the luminescence properties in this material. X-Ray diffraction is used to confirm the crystal structure of this material made by solution combustion synthesis route. A Photoluminescence (PL) measurement shows the phosphor exhibited intense emission at 592nm and 615nm respectively corresponding to 5D0→7F1 and 5D0→7F2 transitions of Eu3+ on excitation with optimum 394nm wavelengths. The remaining excitation peaks at 381 and 465nm with broad band 200–310nm are also shown in the excitation spectra. Varying the irradiation dose of gamma radiation as well as rare earth activator quantity, its thermoluminescence (TL) spectra is measured. A single TL glow peak is obtained at 170°C with a shoulder around 266°C for the heating rate of 5°C/s a. After deconvolution, activation energy and frequency factors are calculated for two peaks P1 and P2. The linear dose response is sketch graphically which prove this phosphor to be useful in the category of new dosimetry materials.