long-time glow in the dark.

Photoluminescence pigment is a new-type of environmentally friendly alkaline earth aluminate pigment with the characters of non-toxic, innocuous ,non-radioactive. By absorbing ultraviolat light and other visible light, it can release the energy in the form of visible light for over 10 hours in the dark and features duty-cycle operation . The luminosity and after-glow time are over 30 times compared with the traditional ZnS products.

Chemical Identity : SrAl2O4 :Eu,Dy

photoluminescence pigment