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Efficiency enhancement of an organic light-emitting diode with a cathode forming two-dimensional periodic hole array

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3 Author(s)
Liu, C. ; Department of Physics, University of Utah, Salt Lake City, Utah 84112 ; Kamaev, V. ; Vardeny, Z.V.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1895481 

We fabricated an organic light-emitting diode using a π-conjugated polymer emissive layer sandwiched between two semitransparent electrodes: an optically thin gold film anode, whereas the cathode was in the form of an optically thick aluminum (Al) film with patterned periodic subwavelength two-dimensional hole array that showed anomalous transmission in the spectral range of the polymer photoluminescence band. At similar current densities, we obtained a sevenfold electroluminescence efficiency enhancement with the patterned Al device compared with a control device based on unperforated Al electrode.

Published in:

Applied Physics Letters  (Volume:86 ,  Issue: 14 )

Date of Publication:

Apr 2005

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