A novel amalgamation of Gd2MoB2O9:CeF3 phosphor with ZnO: BaO: B2O3 glass using microwave synthesis for scintillation material applications

초록

This work investigates the physical, structural, optical, photoluminescence, and X-ray luminescence properties of Gd1.5MoB2O9: 0.5CeF(3) mixed 10ZnO:35BaO:55B(2)O(3) glass with a weight ratio of 1:9. The samples were prepared by heating with microwave synthesis technique varying the time from 5 min to 10 min. The structural studies were analysed using X-ray diffraction analysis (XRD) and the oxidation of cerium atom were analysed using X-ray analysis near edge spectra (XANES). An X-ray diffraction analysis to investigate the structure of samples using by a Shimadzu XRD-6100 diffractometer. XANES spectra of the Ce-L-III edge for samples show peaks at similar to 5728 eV, confirming the presence of Ce3+ ion and Ce(4+)ion. A UV-VIS-NIR spectrophotometer was used to record the absorption spectra (Shimadzu, 3600) in the 200-1000 nm wavelength. The photoluminescence of the sample show overlapping between excitation and emission spectra in the range of 300-450 nm by monitoring at room temperature with a spectrofluorophotometer (Cary-Eclipse). These emissions correspond to the 5d - 4f transitions of Ce3+ ion. From radiation studies, the luminescence spectra under x-ray as source show the emission peak at 411 nm that corresponds to the 5d - F-2(5/2) and 5d - F-2(7/2) transitions of Ce3+ ion. The samples with the highest intensity were compared with bismuth germanate oxide (BGO) crystals, which are used as radiation detectors, and were found to be as effective as 35.47% of the BGO crystals. The results obtained in the present work demonstrate that the current samples could be a potential candidate for use in scintillator applications.

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