| abstract |
An organic light emissive device comprising: an anode (12); a cathode (20,22); and an organic light emissive layer (18) between the anode (12) and the cathode (20,22), wherein the cathode (20,22) comprises an electron-injecting layer (20) comprising a barium compound or a metal oxide; the organic light emissive layer (18) comprises an organic phosphorescent material; and the electron injecting layer (20) is in direct contact with the organic light emissive layer (18). |