A rapid combustion process for the preparation of MgSrAl10O17:Eu2+ phosphor and related luminescence and defect investigations

Luminescent properties of Ca0.97Al2O4:Eu0.012+,Dy0.023+ phosphors prepared by combustion method at different initiating temperatures

“…2(a) illustrate the inherent nature of the combustion method. Singh et al [11] ascribed the irregular particle shapes to the non-uniform distribution of temperature and mass flow in the combustion flame. The morphology of a porous product with the small particles close to the pores at higher resolution shown by Fig.…”

Enhanced blue emission and EPR study of LaMgAl11O19:Eu phosphors

“…In view of these, LMA doped with europium was prepared in our study via a facile combustion process. In recent years, we have carried out detailed photoluminescence and electron paramagnetic resonance investigations on rare-earth and transition ions doped aluminate based phosphors in order to identify the role of the dopant on the luminescence process [26][27][28][29]. In continuation of this interest, we have synthesized Eu doped LaMgAl 11 O 19 phosphor by a suitable solution combustion method.…”

Persistent UV phosphors for application in photo catalysis

“…They are a kind of energy-storing materials which can absorb light and then release the energy after the excitation sources are removed (usually 'UV irradiation'). However, progress in the development of long afterglow materials has been relatively recent, and-because the mechanisms are complex-there are no general techniques that allow the synthesis of persistent phosphors with designated coloration and/or lifetimes; consideration of the main factors affecting phosphorescence, i.e., the luminescent center and traps, together with practical experience can be used in formulating synthetic strategies [1][2][3].…”

“…As seen above, for the systematic search of long phosphorescence materials in the UV region, we should select trivalent rare-earth elements to be introduced in structures of aluminate and/or silicate hosts, which constitute appropriate trap-holes for high phosphorescence materials (it is known that the trapping process involves switching from tri-to tetravalent states of lanthanides, just above the valence band); so, good candidates seem to be those ions that are easily oxidized, with the configuration 4f 0-7+ (1)(2)(3) .…”