The rate of excited state level

So long afterglow time depends on the number of electrons in the trap level and the rate of return excited level , afterglow trap level depends on the intensity of the electron in the unit time to return excited level rate.
This luminous paint luminous paint photoluminescent pigment is dominated by the afterglow luminescent properties of the decision. Rare earth doped alkaline earth aluminate luminous emission time is largely determined by the attenuation characteristics and trap effect decisions. Rare earth doped alkaline earth aluminates attenuation photoluminescent films decay with temperature , the lower the temperature , the weaker intensity , temperature, light intensity increases rapidly , the decay time is much shorter.