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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 19 — Oct. 1, 2013
  • pp: 3773–3775

Enhancement of outcoupling efficiency of organic light-emitting diodes using a planarized moth-eye structure on glass substrate

Jeong Ho Kim, Lee-Mi Do, Je-Hong Choi, Jaehoon Park, and Heon Lee  »View Author Affiliations


Optics Letters, Vol. 38, Issue 19, pp. 3773-3775 (2013)
http://dx.doi.org/10.1364/OL.38.003773


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Abstract

To improve optical properties of organic light-emitting diodes (OLEDs), we developed a planarized moth-eye structure by ultraviolet nanoimprint lithography (UV-NIL). The moth-eye pattern was fabricated on a glass substrate by UV-NIL using AMONIL polymer resin. It contains nanoscaled, cone-shaped, periodic pattern arrays with a 250 nm diameter and a 550 nm pitch. The glass substrate with the moth-eye structure exhibited a 1%–2% improvement in transmittance of visible wavelengths, but it requires a planarized layer with high-refractive-index materials. Photosensitive titanium precursor resin annealed by UV was used to improve the current efficiency by up to 26% versus conventional OLEDs.

© 2013 Optical Society of America

OCIS Codes
(160.6060) Materials : Solgel
(230.3670) Optical devices : Light-emitting diodes
(240.0240) Optics at surfaces : Optics at surfaces
(310.6860) Thin films : Thin films, optical properties

ToC Category:
Thin Films

History
Original Manuscript: May 10, 2013
Manuscript Accepted: July 19, 2013
Published: September 19, 2013

Citation
Jeong Ho Kim, Lee-Mi Do, Je-Hong Choi, Jaehoon Park, and Heon Lee, "Enhancement of outcoupling efficiency of organic light-emitting diodes using a planarized moth-eye structure on glass substrate," Opt. Lett. 38, 3773-3775 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-19-3773

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