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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 16 — Aug. 2, 2010
  • pp: 16715–16721

Estimation of the mean emission zone in phosphorescent organic light-emitting diodes with a thin emitting layer

Sei-Yong Kim, Dong-Seok Leem, and Jang-Joo Kim  »View Author Affiliations

Optics Express, Vol. 18, Issue 16, pp. 16715-16721 (2010)

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We presented an approach to estimate the emission zone (EZ) positions in high efficiency phosphorescent OLEDs with a thin emitting layer. Two devices with different distances between the emitting layer and the cathode (i.e. they are optically different), but exhibiting same current density-voltage characteristics (i.e. they are electrically the same) were used for this purpose. Mean EZ positions in the OLEDs were extracted from the comparison of the experimental luminous intensity ratio vs. the current density with the calculated intensity ratio vs. the EZ position. The validity of the approach was confirmed by the agreement between calculated and experimental spectral changes.

© 2010 OSA

OCIS Codes
(160.4890) Materials : Organic materials
(230.3670) Optical devices : Light-emitting diodes

ToC Category:
Optical Devices

Original Manuscript: May 19, 2010
Revised Manuscript: July 3, 2010
Manuscript Accepted: July 20, 2010
Published: July 23, 2010

Sei-Yong Kim, Dong-Seok Leem, and Jang-Joo Kim, "Estimation of the mean emission zone in phosphorescent organic light-emitting diodes with a thin emitting layer," Opt. Express 18, 16715-16721 (2010)

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