OSA's Digital Library

Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 14 — Jul. 10, 2006
  • pp: 6564–6571

Enhanced out-coupling factor of microcavity organic light-emitting devices with irregular microlens array

Jongsun Lim, Seung Seok Oh, Doo Youp Kim, Sang Hee Cho, In Tae Kim, S. H. Han, Hideo Takezoe, Eun Ha Choi, Guang Sup Cho, Yoon Ho Seo, Seung Oun Kang, and Byoungchoo Park  »View Author Affiliations

Optics Express, Vol. 14, Issue 14, pp. 6564-6571 (2006)

View Full Text Article

Enhanced HTML    Acrobat PDF (640 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We studied microcavity organic light-emitting devices with a microlens system. A microcavity for organic light-emitting devices (OLED) was fabricated by stacks of SiO2 and SiNx layers and a metal cathode together with the microlens array. Electroluminescence of the devices showed that color variation under the viewing angle due to the microcavity is suppressed remarkably by microlens arrays, which makes the use of devices acceptable in many applications. It was also demonstrated that the external out-coupling factor of the devise increases by a factor of ~1.8 with wide viewing angles compared to conventional OLEDs.

© 2006 Optical Society of America

OCIS Codes
(190.4360) Nonlinear optics : Nonlinear optics, devices
(230.0230) Optical devices : Optical devices

ToC Category:
Optical Devices

Original Manuscript: April 25, 2006
Revised Manuscript: July 3, 2006
Manuscript Accepted: July 4, 2006
Published: July 10, 2006

Jongsun Lim, Seung Seok Oh, Doo Youp Kim, Sang Hee Cho, In Tae Kim, S. H. Han, Hideo Takezoe, Eun Ha Choi, Guang Sup Cho, Yoon Ho Seo, Seung Oun Kang, and Byoungchoo Park, "Enhanced out-coupling factor of microcavity organic light-emitting devices with irregular microlens array," Opt. Express 14, 6564-6571 (2006)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. C. W. Tang and S. A. Van Slyke, "Organic electroluminescent diodes," Appl. Phys. Lett. 51, 913-915 (1987). [CrossRef]
  2. T. Yamasaki, K. Sumioka, and T. Tsutsui, "Organic light-emitting device with an ordered monolayer of silica microspheres as a scattering medium," Appl. Phys. Lett. 76, 1243-1245 (2000). [CrossRef]
  3. B. J. Matterson, J.M. Lupton, A. F. Safonov,M. G. Salt,W. L. Barnes, and I. D.W. Samuel, "Increased Efficiency and Controlled Light Output from a Microstructured Light-Emitting Diode," Adv. Mater. 13, 123-127 (2001). [CrossRef]
  4. P. A. Hobson, S. Wedge, J. A. E. Wasey, I. Sage, and W. L. Barnes, "Surface Plasmon Mediated Emission from Organic Light-Emitting Diodes," Adv. Mater. 14, 1393-1396 (2002). [CrossRef]
  5. S. Moller and S. R. Forrest, "Improved light out-coupling in organic light emitting diodes employing ordered microlens arrays," J. Appl. Phys. 91, 3324-3327 (2002). [CrossRef]
  6. H. J. Peng, Y. L. Ho, C. F. Qiu, M. Wong, and H. S. Kwok, "Coupling Efficiency Enhancement of Organic Light Emitting Devices with Refractive Microlens Array on High Index Glass Substrate," SID 04 Digest, 158 (2004).
  7. M.-K. Wei and I-L. Su, "Method to evaluate the enhancement of luminance efficiency in planar OLED light emitting devices for microlens array," Opt. Express 12, 5777-5782 (2004). [CrossRef] [PubMed]
  8. C. F. Madigan, M.-H. Lu, and J. C. Strurm, "Improvement of output coupling efficiency of organic light-emitting diodes by backside substrate modification," Appl. Phys. Lett. 76, 1650-1652 (2000). [CrossRef]
  9. N. Takada, T. Tsutsui, and S. Saito, "Control of emission characteristics in organic thin-film electroluminescent diodes using an optical-microcavity structure," Appl. Phys. Lett. 63, 2032-2034 (1993). [CrossRef]
  10. A. Dodabalapur, L. J. Rothberg, T. Miller, and E. W. Kwock, "Microcavity effects in organic semiconductors," Appl. Phys. Lett. 64, 2486-2488 (1994). [CrossRef]
  11. T. Nakayama, Y. Itoh, and A. Kakuta, "Organic photo- and electroluminescent devices with double mirrors," Appl. Phys. Lett. 63, 594-595 (1993). [CrossRef]
  12. T. Tsutsui, N. Takada, S. Saito, and E. Ogino, "Sharply directed emission in organic electroluminescent diodes with an optical-microcavity structure," Appl. Phys. Lett. 65, 1868-1870 (1994). [CrossRef]
  13. A. Dodabalapur, L. J. Rothberg, and T. Miller, "Color variation with electroluminescent organic semiconductors in multimode resonant cavities," Appl. Phys. Lett. 65, 2308-2310 (1994). [CrossRef]
  14. S. Tokito, K. Noda, and Y. Taga, "Strongly directed single mode emission from organic electroluminescent diode with a microcavity," Appl. Phys. Lett. 68, 2633-2635 (1996). [CrossRef]
  15. R. H. Jordan, L. J. Rothberg, A. Dodabalapur, and R. E. Slusher, "Efficiency enhancement of microcavity organic light emitting diodes," Appl. Phys. Lett. 69, 1997-1999 (1996). [CrossRef]
  16. H. J. Peng, M. Wong, and H. S. Kwok, "Design and Characterization of Organic Light Emitting Diodes with Microcavity Structure," SID 03 Digest, 516 (2003).
  17. Y. J. Lee, S. H. Kim, J. Huh, G. H. Kim, and Y. H. Lee, "A high-extraction-efficiency nanopatterned organic light-emitting diode," Appl. Phys. Lett. 82, 3779-3781 (2003). [CrossRef]
  18. T. Tsutsui, M. Yahiro, H. Yokogawa, K. Kawano, and M. Yokoyama, "Doubling Coupling-Out Efficiency in Organic Light-Emitting Devices Using a Thin Silica Aerogel Layer," Adv. Mater. 13, 1149-1152 (2001). [CrossRef]
  19. G. Gu, D. Z. Garbuzov, P. E. Burrows, S. Venkatesh, S. R. Forrest, and M. E. Thompson, "High-externalquantum-efficiency organic light-emitting devices," Opt. Lett. 22, 396-398 (1997). [CrossRef] [PubMed]
  20. S. Okamoto, K. Tanaka, Y. Izumi, H. Adachi, T. Yamaji, and T. Suzuki, "Simple Measurement of Quantum Efficiency in Organic Electroluminescent Devices," Jpn. J. Appl. Phys. 40, 783-784 (2001). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited