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8205255 
Journal Article 
Studies on the luminescence properties of cerium co-doping on Ca2 MgSi2 O7 :Eu2+ phosphor by solid-state reaction method 
Sahu, IP; Bisen, DP; Murthy, KVR; Tamrakar, RK; , 
2017 
1 
Luminescence
ISSN: 1522-7235
EISSN: 1522-7243 
WILEY 
HOBOKEN 
1263-1276 
English 
28556399 
WOS:000412673600023 
has retraction 8055802 Retraction: Ishwar Prasad Sahu, D. P. Bisen, K. V. R. Murthy, R. K. Tamrakar (2017)
Ca2 MgSi2 O7 :Ce3+ , Ca2 MgSi2 O7 :Eu2+ and Ca2 MgSi2 O7 :Eu2+ ,Ce3+ 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 Ca2 MgSi2 O7 :Eu2+ and Ca2 MgSi2 O7 :Eu2+ ,Ce3+ phosphors were composed of a broad emission band peaking at 530 nm. When the Ca2 MgSi2 O7 :Eu2+ phosphor is co-doped with Ce3+ ions, photoluminescence, afterglow and mechanoluminescence intensity was strongly enhanced. Ca2 MgSi2 O7 :Eu2+ showed some afterglow with a short persist time. On incorporation of Ce3+ , efficient energy transfer from Ce3+ to Eu2+ was found and the emission intensity of Eu2+ was enhanced. The mechanoluminescence intensities of Ca2 MgSi2 O7 :Ce3+ , Ca2 MgSi2 O7 :Eu2+ and Ca2 MgSi2 O7 :Eu2+ ,Ce3+ 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.