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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 23 — Nov. 18, 2013
  • pp: 28040–28047

Enhanced and balanced efficiency of white bi-directional organic light-emitting diodes

Jonghee Lee, Hyunsu Cho, Tae-Wook Koh, Changhun Yun, Simone Hofmann, Jae-Hyun Lee, Yong Hyun Kim, Björn Lüssem, Jeong-Ik Lee, Karl Leo, Malte C. Gather, and Seunghyup Yoo  »View Author Affiliations


Optics Express, Vol. 21, Issue 23, pp. 28040-28047 (2013)
http://dx.doi.org/10.1364/OE.21.028040


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Abstract

We report on the characteristics of enhanced and balanced white-light emission from bi-directional organic light-emitting diodes (BiOLEDs) enabled by the introduction of micro-cavity effects. The insertion of an additional metal layer between the indium tin oxide anode and the hole transporting layer results in similar light output of our BiOLEDs in both top and bottom direction and in reduced distortion of the electroluminescence spectrum. Furthermore, we find that by utilizing MC effects, the overall current efficiency can be improved by 26.2% compared to that of a conventional device.

© 2013 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(230.4170) Optical devices : Multilayers
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Optical Devices

History
Original Manuscript: September 27, 2013
Revised Manuscript: October 28, 2013
Manuscript Accepted: October 29, 2013
Published: November 7, 2013

Virtual Issues
Vol. 9, Iss. 1 Virtual Journal for Biomedical Optics

Citation
Jonghee Lee, Hyunsu Cho, Tae-Wook Koh, Changhun Yun, Simone Hofmann, Jae-Hyun Lee, Yong Hyun Kim, Björn Lüssem, Jeong-Ik Lee, Karl Leo, Malte C. Gather, and Seunghyup Yoo, "Enhanced and balanced efficiency of white bi-directional organic light-emitting diodes," Opt. Express 21, 28040-28047 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-23-28040


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References

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