OSA's Digital Library

Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 23 — Nov. 15, 2004
  • pp: 5777–5782

Method to evaluate the enhancement of luminance efficiency in planar OLED light emitting devices for microlens array

Mao-Kuo Wei and I-Lin Su  »View Author Affiliations

Optics Express, Vol. 12, Issue 23, pp. 5777-5782 (2004)

View Full Text Article

Enhanced HTML    Acrobat PDF (303 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



A method based on the variation of the area ratio of the base surface of microlenses to the light-emitting surface of the planar OLED device has been demonstrated. This method can evaluate the performance of microlens arrays with a desired geometrical shape on the improvement of the luminance efficiency for the planar light emitting devices. The maximum enhancement of the luminance efficiency of the devices in the studied microlens arrays is 56%. It is also found that the improvement of the luminance efficiency of the devices increases linearly with decreasing base length of the microlens array.

© 2004 Optical Society of America

OCIS Codes
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(230.3990) Optical devices : Micro-optical devices

ToC Category:
Research Papers

Original Manuscript: September 8, 2004
Revised Manuscript: November 1, 2004
Manuscript Accepted: November 9, 2004
Published: November 15, 2004

Mao-Kuo Wei and I-Lin Su, "Method to evaluate the enhancement of luminance efficiency in planar OLED light emitting devices for microlens array," Opt. Express 12, 5777-5782 (2004)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. B. J. Matterson, J. M. Lupton, A. F. Safonov, M. G. Salt, W. L. Barnes, I. D. W. Samuel, “Increased efficiency and controlled light output from a microstructured light-emitting diode,” Adv. Mater. 13, 123–127 (2001) [CrossRef]
  2. P. A. Hobson, S. Wedge, J. A. E. Wasey, I. Sage, W. L. Barnes, “Surface plasmon mediated emission from organic light-emitting diodes,” Adv. Mater. 14, 1393–1396 (2002) [CrossRef]
  3. I. Schnitzer, E. Yablonovitch, C. Caneau, T. J. Gmitter, A. Scherer, “30% external quantum efficiency from surface textured, thin-film light-emitting diodes,” Appl. Phys. Lett. 63, 2174–2176 (1993) [CrossRef]
  4. T. Tsutsui, M. Yahiro, H. Yokogawa, K. Kawano, M. Yokoyama, “Doubling coupling-out efficiency in organic light-emitting devices using a thin silica aerogel layer,” Adv. Mater. 13, 1149–1152 (2001) [CrossRef]
  5. T. Yamasaki, K. Sumioka, 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]
  6. C. F. Madigan, M.-H. Lu, J. C. Sturm, “Improvement of output coupling efficiency of organic lightemitting diodes by backside substrate modification,” Appl. Phys. Lett. 76, 1650–1652 (2000) [CrossRef]
  7. M.-H. Lu, J. C. Sturm, “External coupling efficiency in planar organic light-emitting devices,” Appl. Phys. Lett. 78, 1927–1929 (2001) [CrossRef]
  8. M.-H. Lu, J. C. Sturm, “Optimization of external coupling and light emission in organic light-emitting devices: modeling and experiment,” J. Appl. Phys. 91, 595–604 (2002) [CrossRef]
  9. S. Möller, S. R. Forrest, “Improved light out-coupling in organic light emitting diodes employing ordered microlens arrays,” J. Appl. Phys. 91, 3324–3327 (2002) [CrossRef]
  10. H. W. Choi, C. Liu, E. Gu, G. McConnell, J. M. Girkin, I. M. Watson, M. D. Dawson, “GaN micro-light-emitting diode arrays with monolithically integrated sapphire microlenses,” Appl. Phys. Lett. 84, 2253–2255 (2004) [CrossRef]
  11. H. J. Peng, Y. L. Ho, C. F. Qiu, M. Wong, H. S. Kwok, “Coupling efficiency enhancement of organic light emitting devices with refractive microlens array on high index glass substrate,” SID 04 Digest, 158–161 (2004) [CrossRef]
  12. S. R. Forrest, D. D. C. Bradley, M. E. Thompson, “Measuring the efficiency of organic light-emitting devices,” Adv. Mat. 15, 1043–1048 (2003) [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