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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 7 — Apr. 8, 2013
  • pp: 8535–8543

Enhanced light out-coupling of organic light-emitting diode using metallic nanomesh electrodes and microlens array

Yu-Hsuan Ho, Kuan-Yu Chen, Kai-Yu Peng, Ming-Chih Tsai, Wei-Cheng Tian, and Pei-Kuen Wei  »View Author Affiliations


Optics Express, Vol. 21, Issue 7, pp. 8535-8543 (2013)
http://dx.doi.org/10.1364/OE.21.008535


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Abstract

A precisely controlled metallic nanomesh was fabricated by using nanosphere lithography to pattern the silver thin film to form hexagonal nanohole arrays with excellent uniformity, high conductivity and good transparency. An Alq3 based OLED, with the silver nanomesh electrode of high ðll factor of 70.2% demonstrated a considerable luminous efðciency of 4.8 cd/A, which is 60.9% higher than the referenced device with ITO anode. The periodical nanohole array not only increased the transparency but also helped extracting surface plasmonic wave in organic layers. By attaching the microlens array to further extract the trapped light in substrate, the extraction efficiency enhancement of device with nanomesh anode was 73.8% higher than 50.2% of the referenced device with ITO anode. And the overall current efficiency of device with nanomesh anode was 87.7% higher than traditional ITO based device.

© 2013 OSA

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(220.4241) Optical design and fabrication : Nanostructure fabrication

ToC Category:
Optical Devices

History
Original Manuscript: January 29, 2013
Revised Manuscript: March 14, 2013
Manuscript Accepted: March 27, 2013
Published: April 1, 2013

Citation
Yu-Hsuan Ho, Kuan-Yu Chen, Kai-Yu Peng, Ming-Chih Tsai, Wei-Cheng Tian, and Pei-Kuen Wei, "Enhanced light out-coupling of organic light-emitting diode using metallic nanomesh electrodes and microlens array," Opt. Express 21, 8535-8543 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-7-8535


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