| abstract |
An organic light-emitting device (OLED) includes an anode (120) , a cathode (180) , and a light-emitting layer (150) disposed between the anode (120) and the cathode (180) , wherein the light-emitting layer (150) includes a dominant host and a dopant. The device also includes an electron-transporting layer (160) disposed in direct contact with the light-emitting layer (150) on the cathode side, wherein the electron-transporting layer (160) includes an electron-transporting material having the same chromophore as that of the dominant host in the light-emitting layer (150) , wherein the electron-transporting material constitutes more than 50% by volume of the electron-transporting layer (160) , and wherein the electron-transporting material has a greater reduction potential than that of the dominant host in the light-emitting layer (150) . |