Sol‐gel synthesis of STRONTIUM ALUMINATE (cas 12004-37-4) phosphor and its TL and OSL properties

Add time:07/22/2019    Source:sciencedirect.com

SrAl2O4 monoclinic and Sr12Al14O33 cubic phase nanocrystals were synthesized using sol-gel route and their morphology verified with X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) to confirm the crystallinity of the samples and the crystallites nanoscale. Luminescence emissions were investigated by Optically Stimulated Luminescence (OSL) and Thermoluminescence (TL) methods in samples thermally treated at 1000 °C for 2 h and irradiated with β particles.TL glow curve was complex with 9 individual peaks, which was analyzed by Tm-Tstop method, general order kinetic theory using Computerized Glow Curve Deconvolution (CGCD). A thermal transfer TL phenomenon was observed when the samples were pre-heated in Tm-Tstop procedure. CW-OSL decays measured at 30 °C have high intensities even in low doses region and curves were deconvoluted using general order kinetic theory suppling two components for low doses and three components for high dose.

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