Europium(III) oxide (Eu2O3), is a chemical compound of europium and oxygen. It is widely used as a red or blue phosphor in television sets and fluorescent lamps, and as an activator for yttrium-based phosphors.
EO 120 (OTTO) Europium oxide, nanopowder, APS 30-50 nm, 99.99% - used as a dopant in Y2O3 for the P22 commercial phosphor