Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Fully Solution-Processed Green Organic Light-Emitting Diodes Using the Optimized Electron Transport Layers

최적화된 전자 수송층을 활용한 완전한 용액공정 기반 녹색 유기발광다이오드

  • Han, Joo Won (Department of Display Engineering, Pukyong National University) ;
  • Kim, Yong Hyun (Department of Display Engineering, Pukyong National University)
  • 한주원 (부경대학교 융합디스플레이공학과) ;
  • 김용현 (부경대학교 융합디스플레이공학과)
  • Received : 2018.05.10
  • Accepted : 2018.08.21
  • Published : 2018.11.01
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Abstract

Solution-processed organic light-emitting diodes (OLEDs) have the advantages of low cost, fast fabrication, and large-area devices. However, most studies on solution-processed OLEDs have mainly focused on solution-processable hole transporting materials or emissive materials. Here, we report fully solution-processed green OLEDs including hole/electron transport layers and emissive layers. The electrical and optical properties of OLEDs based on solution-processed TPBi (2,2',2"-(1,3,5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole)) as the electron transport layer were investigated with respect to the spin speed and the number of layers. The performance of OLEDs with solution-processed TPBi exhibits a power efficiency of 9.4 lm/W. We believe that the solution-processed electron transport layers can contribute to the development of efficient fully solution-processed multilayered OLEDs.

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References

  1. S. Reineke, M. Thomschke, B. Lussem, and K. Leo, Rev. Mod. Phys., 85, 1245 (2013). [DOI: https://doi.org/10.1103/RevModPhys.85.1245]
  2. M. C. Gather, A. Kohnen, and K. Meerholz, Adv. Mater., 23, 233 (2011). [DOI: https://doi.org/10.1002/adma.201002636]
  3. L. Ying, C. L. Ho, H. Wu, Y. Cao, and W. Y. Wong, Adv. Mater., 26, 2459 (2014). [DOI: https://doi.org/10.1002/adma.201304784]
  4. K. S. Yook and J. Y. Lee, Adv. Mater., 26, 4218 (2014). [DOI: https://doi.org/10.1002/adma.201306266]
  5. S. Ho, S. Liu, Y. Chen, and F. So, J. Photonics Energy, 5, 057611 (2015). [DOI: https://doi.org/10.1117/1.JPE.5.057611]