Photoluminescence and phosphorescence properties of MAl2O4:Eu2+, Dy3+ (M=Ca, Ba, Sr) phosphors prepared at an initiating combustion temperature of 500°C

The effect of different gas atmospheres on luminescent properties of pulsed laser ablated SrAl2O4:Eu2+,Dy3+ thinfilms

“…Codoping with Dy 3 + enhances the phosphorescence because it increases the number of electron traps in the vicinity of Eu 2 + and their trap depth [31]. The films were further characterized by the fast, intermediate and slow decays of the afterglow characteristics [32], since they are indicative of the different rates of decay for the films. The decay curves were fitted by the third order exponential decay equation…”

Synthesis of phosphorescent ceramic pigment BaAl1.7B0.3O4 doped with Eu2+ and Dy3+

“…The doping elements used in the study are known to have different effects: Eu 2 þ is a well known activator of the optical properties of the pigment while Dy 3 þ is a phosphorescent decay extender [3,7,8]. As has been previously described [9][10][11][12], the XRD results (Fig. 2) indicate that the crystalline phase formed for all samples was hexagonal barium aluminate (BaAl 2 O 4 -JCPDS 00-017-0306).…”

Surface Sensitive Techniques for Advanced Characterization of Luminescent Materials

“…also play important roles in the luminescent properties. The host, valence state and crystal field are the most important properties of phosphors to be reckoned with in the design of new phosphor materials [4,5,6,7,8]. The crystal field due to the local host environment in combination with the dopant ion with the correct valence/oxidation state can be used to obtain emissions from the Ultra violet (UV) to the Infra-red (IR) wavelength ranges.…”