کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1787367 | 1023439 | 2011 | 4 صفحه PDF | دانلود رایگان |
White top-emitting organic light-emitting devices (TEOLEDs) were fabricated on a glass substrate with metal/organic multilayer of (Ag/Alq3)2 (Alq3 is tris-(8-hydroxyquinoline) aluminum) as cathode. White TEOLEDs with high efficiency were obtained due to the microcavity effects. And the (Ag/Alq3)2 cathode, which adjusted the optical characteristics of the devices, played an important role. In addition, Alq3–Ag–Alq3 multilayer could work as a buffer layer, which would simplify the process of encapsulation for devices. We also calculated the electroluminescence spectrum of devices encapsulated with Al2O3 (150 nm) and Al2O3(75 nm)/ZrO2(75 nm). And the results indicated that the CIE coordinates is almost the same between with and without encapsulating.
► White top-emitting organic light-emitting devices (TEOLEDs) were fabricated with metal/organic multilayers cathode.
► The maximum current efficiency of the device can reach 9.51 cd/A.
► The cathode could adjust the optical characteristic of the devices to achieve white emission.
► The cathode could be also work as buffer layer to protect the devices when encapsulating.
Journal: Current Applied Physics - Volume 11, Issue 6, November 2011, Pages 1410–1413