Retracted: Studies on the luminescence properties of cerium co‐doping on Ca2MgSi2O7:Eu2+ phosphor by solid‐state reaction method

Abstract Ca 2 MgSi 2 O 7 :Ce 3+ , Ca 2 MgSi 2 O 7 :Eu 2+ and Ca 2 MgSi 2 O 7 :Eu 2+ ,Ce 3+ phosphors were prepared using the solid‐state reaction method. The crystal structures of the sintered phosphors were of melilite type, which has a tetragonal crystallography. The chemical compositions of the sintered phosphors was confirmed by energy dispersive X‐ray spectroscopy. The different thermoluminescence kinetic parameters [activation energy ( E ), frequency factor ( s ) and order of the kinetics ( b )] of these phosphors were evaluated and compared using the peak shape method. Under ultraviolet excitation, the emission spectra of both Ca 2 MgSi 2 O 7 :Eu 2+ and Ca 2 MgSi 2 O 7 :Eu 2+ ,Ce 3+ phosphors were composed of a broad emission band peaking at 530 nm. When the Ca 2 MgSi 2 O 7 :Eu 2+ phosphor is co‐doped with Ce 3+ ions, photoluminescence, afterglow and mechanoluminescence intensity was strongly enhanced. Ca 2 MgSi 2 O 7 :Eu 2+ showed some afterglow with a short persist time. On incorporation of Ce 3+ , efficient energy transfer from Ce 3+ to Eu 2+ was found and the emission intensity of Eu 2+ was enhanced. The mechanoluminescence intensities of Ca 2 MgSi 2 O 7 :Ce 3+ , Ca 2 MgSi 2 O 7 :Eu 2+ and Ca 2 MgSi 2 O 7 :Eu 2+ ,Ce 3+ phosphors increased proportionally increased with the increase in impact velocity, which suggests that these phosphors can be used as sensors to detect stress in an object.