Scintillators
Inorganic scintillating materials

Luminescence corresponds to the cold emission of light from matter, which can be as gas, liquid or solid. This phenomenon occurs from the radiative recombination from an excited energy state to a less excited or relaxed state of that matter. An energy input is thus required to promote a given system into an excited state. The physical nature of this energy input specifies the luminesce type. If the energy is light, it is photoluminescence , if the energy input comes from an electric current, we talk of electroluminescence and if it originates from a chemical reaction, the appropriate term is chemiluminescence. If the system in question...