Enhancement of outcoupling efficiency of organic light-emitting diodes using a planarized moth-eye structure on glass substrate
- Authors
- Kim, Jeong Ho; Do, Lee-Mi; Choi, Je-Hong; Park, Jaehoon; Lee, Heon
- Issue Date
- 1-10월-2013
- Publisher
- OPTICAL SOC AMER
- Citation
- OPTICS LETTERS, v.38, no.19, pp.3773 - 3775
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPTICS LETTERS
- Volume
- 38
- Number
- 19
- Start Page
- 3773
- End Page
- 3775
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/101903
- DOI
- 10.1364/OL.38.003773
- ISSN
- 0146-9592
- 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. (C) 2013 Optical Society of America
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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