The Fabrication And Property Of Organic Light-Emitting Devices

This thesis mainly discussed the OLED's fabrication and a series of characteristics on electronic and optical property.At first, the thesis reviewed the histories and described structures, organic materials, hotspot, foreground of organic Light-Emitting Devices.The organic films of OLED were fabricated by reactive evaporating deposition.The uniformity on the organic films of Alq₃ and TPD were maden sure by some detection which device's luminescence is from Alq₃ was known by PL and EL chart.The thesis discussed the effects of OLED's property. The structure of OLED is ITO/TPD(20 nm)/Alq₃(30 nm)/Al .at first I searched the optimized deposition velocity of Alq₃ by testing electronic and optical property of the device. After ensuring the deposition velocity of Alq₃ ,The effect of OLED on humidity was discussed and the difference of LiF/Al cathode and Al cathode was studied .The thesis studied the lifetime of OLED and found worthy experiment results by experiment on lifetime on condition of atmosphere .