Effect of host-doping ions on the afterglow property of (Y,Rn)_2O_2S∶Sm~(3+),Ti~(4+),Mg~(2+)(Rn=La,Gd,Lu,Ga,Al) red phosphors;

The red long-lasting phosphorescence materials doped with rare earth ions comprising of suitable matrices, such as sulfide, titanate, oxysulfide, silicate, oxide, and phosphate are briefly reviewed.

A red long afterglow phosphorescent material Y_2O_3∶Eu~(3+),Ca~(2+),Ti~(4+) was fabricated by the method of combustion synthesis,using urea as the reductant and yttrium nitrate as the oxidant.

It is a new type of Pr~(3+)-doped titanate red long lasting phosphor.

In order to improve the afterglow properties testing standardization of the long afterglow materials,the afterglow properties of the long afterglow SrAl_2O_4: Eu~(2+),Dy~(3+) were measured by using ST-86LA brightness meter.

SrAl_2O_4:Eu~(2+),Dy~(3+) system long afterglow materials have been accepted as one of the most important luminescent materials, due to the advantages of its wide excitation spectrum, visible emission range, high luminescent intensity, non-poisonous, non-radioactivity, long afterglow and high stability.