Long Lasting Persistent Photo-Luminescence Properties of EuxM1-xMgAl10O17(M = Ba, Ca, Sr, Zn) Phosphors

Abstract

Abstract In this work, the EuxM1-xMgAl10O17[M = Ba, Ca. Sr, Zn, and x = 0.05)] phosphors were prepared through a combustion route technique. The complexing reagents namely urea (fuels) were used to synthesis for EuxBa1-xMgAl10O17 (BAM: Eu), EuxCa1-xMgAl10O17 (CAM: Eu), EuxSr1-xMgAl10O17 (SAM:Eu), and EuxZn1-xMgAl10O17 (ZAM:Eu) phosphors. The crystallinity of the synthesized compound, elemental analysis and surface morphology were measured using the PXRD FE-SEM, and FTIR spectroscopy respectability. The average crystallite size (<Ds>) of BAM: Eu, CAM:Eu, SAM: Eu, and ZAM: Eu were found 80, 30, 29, and 26 nm respectively. The photoluminescence emission spectra of phosphor were found broadband by the monitoring using common excitation (350 nm) and emission (450 nm). The CIE-1931 color- coordinates were calculated for each sample in the blue region. The overall PL emission was found near the blue [BAM: Eu, SAM: Eu, and ZAM: Eu ] and blue-red [CAM:Eu] regions with high quantum efficiency and high color purity. Long-lasting PL decay was also recorded of samples with respect to all samples BAM:Eu was calculated from 0.46 to more than 40 min. Therefore, the BAM: Eu and other synthesized phosphors would be used as a blue-emitting phosphor in widely varying fields of lightings.