Luminescent properties of R + doped Sr 2 MgSi 2 O 7 :Eu 3+ (R + = Li + , Na + and K + ) orange–red emitting phosphors

摘要: Sr2MgSi2O7:Eu3+ and Sr2MgSi2O7:Eu3+, R+ (R+ = Li+, Na+ K+) phosphors were prepared by conventional solid state reaction method. The crystal structures of synthesized an akermanite type structure which belongs to the tetragonal crystallography. thermoluminescence kinetic parameters such as activation energy, order kinetics frequency factor was calculated peak shape In this work, orange-red emission originated from 5D0–7FJ (J = 0, 1, 2, 3, 4) transitions Eu3+ ions could clearly be observed after samples excited at 395 nm. Decay graph indicate that these also contain fast slow decay process. Mechanoluminescence intensity increases linearly with increasing impact velocity moving piston (load). CIE color chromaticity diagram confirm would emit color. Thus present investigation indicating phosphor may a potential candidate for stress sensors. dopant charge compensator in can further enhance luminescence intensity, doping Li+ is higher than or K+.