Paper Title
LUMINESCENCE STUDIES IN BAWO4: EU PHOSPHORS

Abstract
BaWO4 phosphor is synthesized by solid state diffusion method. Thermoluminescence (TL), lyoluminescence (LL), mechanoluminescence (ML) and photoluminescence (PL) of the BaWO4 phosphor material is studied. In TL glow curve a single peak is observed around 160 0C. A single peak is also observed in LL glow curve. Intense ML is observed when the irradiated BaWO4:Eu phosphor is deformed by dropping a load onto the sample, from certain height. PL emission curves exhibit a single peak around 480 nm, which are due to Eu2+ and Eu3+ ions respectively. The spectroscopic analysis shows that TL and LL are due to Eu2+ ions, but in ML, role of both the ions are important.