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Journal of Display Technology

Journal of Display Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 2, Iss. 2 — Jun. 1, 2006
  • pp: 138–142

Improving the Performance of Organic Light-Emitting Diodes Containing BCP/LiF/Al by Thermal Annealing

J. X. Sun, X. L. Zhu, X. M. Yu, H. J. Peng, M. Wong, and H. S. Kwok

Journal of Display Technology, Vol. 2, Issue 2, pp. 138-142 (2006)


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Abstract

In this paper, we examined the effect of post-packaging annealing on the performance of organic light-emitting diodes containing tris-(8-hydroxyquinoline) aluminum (Alq3) or 2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP) in direct contact with a LiF-Al bilayer cathode. The detailed electroluminescent (EL) characteristics were compared before and after annealing at 70 °C for 5 hrs. It was found that better luminous efficiency as well as greater power efficiency could be achieved for devices with BCP/LiF/Al structure. However, other devices consisting of Alq3/LiF/Al were less affected. It is believed that the thermal treatment helps to enhance the electron injection for the former, and less helpful for the latter.

© 2006 IEEE

Citation
J. X. Sun, X. L. Zhu, X. M. Yu, H. J. Peng, M. Wong, and H. S. Kwok, "Improving the Performance of Organic Light-Emitting Diodes Containing BCP/LiF/Al by Thermal Annealing," J. Display Technol. 2, 138-142 (2006)
http://www.opticsinfobase.org/jdt/abstract.cfm?URI=jdt-2-2-138

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