Efficient hybrid white organic light-emitting diodes for application of triplet harvesting with simple structure

  title={Efficient hybrid white organic light-emitting diodes for application of triplet harvesting with simple structure},
  author={Kyo Min Hwang and Song Eun Lee and Sungkyu Lee and Han Kyu Yoo and Hyun Jung Baek and Young Kwan Kim and Jwajin Kim and Seung Soo Yoon},
  journal={Journal of the Korean Physical Society},
In this study, we fabricated hybrid white organic light-emitting diodes (WOLEDs) based on triplet harvesting with a simple structure. All the hole transporting material and host in the emitting layer (EML) of devices utilized the same material N,N′-di-1-naphthalenyl-N,N′-diphenyl [1,1′:4′,1″:4″,1‴-quaterphenyl]-4,4‴-diamine (4P-NPD), which is known to be blue fluorescent material. Simple hybrid WOLEDs were fabricated with blue fluorescent, green and red phosphorescent materials. We investigated… 
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