Retracted: Studies on the luminescence properties of cerium co‐doping on Ca2MgSi2O7:Eu2+ phosphor by solid‐state reaction method. (29th May 2017)

• Record Type: Journal Article
• Authors: Sahu, Ishwar Prasad; Bisen, D. P.; Murthy, K. V. R.; Tamrakar, R. K.
• Is Part Of: Luminescence. Volume 32:Number 7(2017)
• Page Start: 1263
• Page End: 1276
• Publication Date: 2017-05-29
• Subjects: long afterglow phosphors -- mechanoluminescence -- melilite -- photoluminescence -- thermoluminescence; Luminescence -- Periodicals; Bioluminescence -- Periodicals; Chemiluminescence -- Periodicals; Luminescence -- Periodicals; 535.35
• DOI: 10.1002/bio.3320
• Languages: English
• ISSNs: 1522-7235

Abstract

Abstract: Ca2 MgSi2 O7 :Ce 3+, Ca2 MgSi2 O7 :Eu 2+ and Ca2 MgSi2 O7 :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 Ca2 MgSi2 O7 :Eu 2+ and Ca2 MgSi2 O7 :Eu 2+, Ce 3+ phosphors were composed of a broad emission band peaking at 530 nm. When the Ca2 MgSi2 O7 :Eu 2+ phosphor is co‐doped with Ce 3+ ions, photoluminescence, afterglow and mechanoluminescence intensity was strongly enhanced. Ca2 MgSi2 O7 :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 Ca2 MgSi2 O7 :Ce 3+, Ca2 MgSi2 O7 :Eu 2+ and Ca2 MgSi2 O7 :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.