Chemiluminescence
Some examples of "glow-in-the-dark" materials do not glow by phosphorescence. For example, "glow sticks" glow due to a chemiluminescent process which is commonly mistaken for phosphorescence. In chemiluminescence, an excited state is created via a chemical reaction. The light emission tracks the kinetic progress of the underlying chemical reaction. The excited state will then transfer to a "dye" molecule, also known as a sensitizer or fluorophor, and subsequently fluoresce back to the ground state
Read more about this topic: Phosphorescence