| 초록 |
Organic light-emitting diodes (OLEDs) have attracted considerable attention as a next-generation lighting. Their enhanced organic materials and device structures have led to highly enhanced efficiency and lifetime. However, the biggest challenge of conventional OLEDs is the limited light outcoupling efficiency about 20 % while the internal quantum efficiency of OLEDs approaches almost 100 %. In this work, we report enhanced light outcoupling efficiency in solution-processed organic light emitting diodes by using a nanoparticle-embedded hole transport layer (HTL), which results in corrugated surface of HTLs. Solution-processed green OLEDs with corrugated HTLs exhibit the highly enhanced light outcoupling efficiency due to reduced total internal reflection in layers. We expect that the solution-processable nanoparticle-embedded hole transport layer can be a simple, cost-effective approach to realize high performance OLEDs. |
