Title：The Effect of Interface Mixing in Solution Processed OLEDs
Lecturer：Prof. Min Chul Suh (Kyung Hee University)
Place：VIP Room, Chemistry Building(West)
Solution processed OLED have recently attracted a great deal of attention because it enables a low cost manufacturing. However, this process may cause lots of problems in material selection since the interface mixing occurs seriously during continuous wet process. In particular, such interface mixing is understood to cause significant deterioration in device lifetime although it does not seem to significantly affect the device efficiency or operating voltage. In this presentation, we discuss the effects of interface mixing on device stability of solution processed OLEDs. In addition, we discuss how to improve the device lifetime even in these situations. Besides, a Laser Induced Thermal Imaging (LITI) process will be introduced as an alternative technology to solve such issues. There will be an introduction of promising way to fabricate micro-cavity OLEDs (organic light emitting diodes) with the concept of ‘‘super top emission’’ with soluble optical path-length compensation layer (OPCL) formed by Laser Induced Thermal Imaging (LITI) technology.