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, Heon Lee

Research output: Contribution to journalArticle

7 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)3773-3775
Number of pages3
JournalOptics Letters
Volume38
Issue number19
DOIs
Publication statusPublished - 2013 Oct 1

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moths
Moths
Glass
light emitting diodes
Light
resins
augmentation
glass
lithography
Refractometry
Titanium
transmittance
cones
Polymers
titanium
refractivity
optical properties
polymers
wavelengths

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Enhancement of outcoupling efficiency of organic light-emitting diodes using a planarized moth-eye structure on glass substrate. / Kim, Jeong Ho; Do, Lee Mi; Choi, Je Hong; Park, Jaehoon; Lee, Heon.

In: Optics Letters, Vol. 38, No. 19, 01.10.2013, p. 3773-3775.

Research output: Contribution to journalArticle

Kim, Jeong Ho ; Do, Lee Mi ; Choi, Je Hong ; Park, Jaehoon ; Lee, Heon. / Enhancement of outcoupling efficiency of organic light-emitting diodes using a planarized moth-eye structure on glass substrate. In: Optics Letters. 2013 ; Vol. 38, No. 19. pp. 3773-3775.
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