Luminescence properties of blue-emitting Ce3+-doped series of Ca2Al2SiO7 and Sr2Al2SiO7 phosphors

Ce 3+ -doped series of Ca 2 Al 2 SiO 7 and Sr 2 Al 2 SiO 7 are prepared via conventional high-temperature solid-state reaction method and impact of Ce 3+ doping on Fracto-mechanoluminescence (ML) and Photoluminescence (PL) properties of Ca 2 Al 2 SiO 7 and Sr 2 Al 2 SiO 7 was analyzed. Identification of phase formation was done by XRD. Analysis of PL studies reveals that both phosphors emit broadband in the intense blue region, when excited by near-UV light (356 nm), and for further analysis, the emission band was resolved into two peaks, which was attributed to 2 D 3/2 → 2 F 5/2 and 2 D 3/2 → 2 F 7/2 transitions of Ce 3+ ion. The calculated energy difference between these two peaks was found to be 1979 cm −1 and 2037 cm −1 , which were in good agreement with the theoretical energy difference (~ 2000 cm −1 ). The color purity of prepared phosphors was much better than commercial BAM (BaMgAl 10 O 17 : Eu 2+ ) phosphor. ML studies were also performed and effect of radiation dose on ML sensitivity has been studied. Results suggest that synthesized phosphors were applied to damage sensors and display devices.