Abstract
A perovskite material, Barium Zirconate (BZO) doped with 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 mol% of Europium (III) were prepared using a solid-state reaction technique. X-ray diffraction (XRD) pattern of BZO doped with 2.0 mol% of Europium was observed. The experimental XRD pattern matched significantly with the standard XRD pattern with the Crystallographic Open Database (COD) card number (96-153-2744) with a figure of merit of 0.89. Photoluminescence emission spectra of the samples prepared exhibited two prominent peaks centred at 592 nm and 612 nm which were attributed to the transitions (5D0 → 7F2) and (5D0 → 7F4) respectively. The concentration quenching occurred when the doping concentration was increased after 2.0 mol% of Europium (III). A coordinate (0.58, 0.41) was found in the Colour Chromaticity Diagram (CIE), which falls in orange–red region. The method involved in the calculation of the Judd-Ofelt intensity parameter was briefly described. The ratio R21 = I (5D0 → 7F2)/I (5D0 → 7F1) was found as 2.93 which is indicative that the electric dipole transitions are more prominent in comparison to the magnetic dipole transitions. The value of intensity parameters was found as 4.98 × 10−20 cm2 and 8.56 × 10−20 cm2 respectively.
Disclosure statement
No potential conflict of interest was reported by the author(s).