International Journal of Industrial Electronics and Electrical Engineering(IJIEEE).
Paper Title - Luminescence Studies on γ-Irradiated Dy Activated SrWO4 Phosphors
Mechanoluminescence (ML) and Thermoluminescence (TL) properties of gamma-irradiated Dy doped SrWO4
phosphors have been studied. SrWO4:Dy samples having different doping concentration of Dy were prepared by solid state
diffusion technique. A single peak is observed in ML intensity versus time curve. One distinct peak around 135oC is
observed in the TL glow curve along with a shoulder around 1900C. Both ML and TL intensities have been observed
maximum for 0.5mol% of Dy in SrWO4 system. It is also observed that ML intensity decreases with increasing the
temperature of the samples and TL intensity of the peak decrease when TL glow curves were recorded after deforming the
irradiated samples. In order to understand the luminescence centers responsible for ML and TL, photoluminescence (PL)
study of SrWO4:Dy samples have also been carried out. Two distinct bands around 470nm and 585nm were observed, which
is characteristics of Dy3+ ions.
Keywords - Mechanoluminescence, Thermoluminescence, Photoluminescence
Author - Shahid A. Siddiqui
Citation - Shahid A. Siddiqui ,
Shahid A. Siddiqui " Luminescence Studies on γ-Irradiated Dy Activated SrWO4 Phosphors " ,
International Journal of Industrial Electronics and Electrical Engineering (IJIEEE) , Volume-5,Issue-11 ( Nov, 2017 )