Communication

High-Efficiency Solution-Processed Small Molecule Electrophosphorescent Organic Light-Emitting Diodes

  1. Min Cai1,
  2. Teng Xiao1,
  3. Emily Hellerich1,
  4. Ying Chen1,
  5. Ruth Shinar2,*,
  6. Joseph Shinar1,*

Article first published online: 4 JUL 2011

DOI: 10.1002/adma.201101154

Issue

Advanced Materials

Advanced Materials

Volume 23, Issue 31, pages 3590–3596, August 16, 2011

Additional Information

How to Cite

Cai, M., Xiao, T., Hellerich, E., Chen, Y., Shinar, R. and Shinar, J. (2011), High-Efficiency Solution-Processed Small Molecule Electrophosphorescent Organic Light-Emitting Diodes. Adv. Mater., 23: 3590–3596. doi: 10.1002/adma.201101154

Author Information

  1. 1

    Ames Laboratory-USDOE, and Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA

  2. 2

    Microelectronics Research Center, and Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 50011, USA

*Microelectronics Research Center, and Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 50011, USA.

Publication History

  1. Issue published online: 9 AUG 2011
  2. Article first published online: 4 JUL 2011
  3. Manuscript Revised: 16 MAY 2011
  4. Manuscript Received: 29 MAR 2011

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Keywords:

  • spin-coated small molecule OLEDs;
  • efficient solution-processed OLEDs;
  • phosphorescent OLEDs;
  • CBP-based spin-coated OLEDs
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Spin-coated small-molecule organic light-emitting diodes (OLEDs) based on green-emitting Ir(mppy)3-doped 4,4'-bis(9-carbazolyl)-biphenyl (CBP) blended with electron- and hole-transporting molecules are demonstrated to have very high efficiencies (up to 60 lm/W and 69 Cd/A without any outcoupling enhancement, which can double with a high-quality microlens array). An additional electron-transporting/hole-blocking BPhen layer is thermally evaporated on the active layer, followed by the LiF/Al cathode.

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