Abstract
The present article reports the photoluminescence, thermoluminescence and mechanoluminescence behavior of Ba2Al2SiO7: xDy3+ (x = 1–4 mol%) phosphor synthesized via solid-state reaction method. X-Ray powder diffraction technique was used to confirm the phase purity and calculate the average crystallite size. Photoluminescence studies show intense peaks in blue and yellow region, which attributes to 4F9/2→6H15/2 and 6H13/2 transition of Dy3+ respectively and optimum intensity in the photoluminescence emission spectra was found to be at 2 mol% concentration of Dy3+. From the TL glow curve trapping parameter; like activation energy and frequency factor were calculated and it is noticed that TL intensity vary linearly with UV dose up to 15 min of exposure time. Mechanoluminescence studies depicts that, ML intensity increases both with increase in UV dose and height of piston. This suggest that the prepared phosphor may act as a potential candidate for low UV dosimetry and damage sensor.
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