Air void optical scattering structure for high-brightness organic light emitting diodes
- Authors
- Sung, Young Hoon; Han, Kyung-Hoon; Kim, Yang Doo; Han, Yoonjay; Kim, Jang-Joo; Lee, Heon
- Issue Date
- 2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- SiO2; OLED; Outcoupling efficiency; Air void structure; Polystyrene sphere
- Citation
- CERAMICS INTERNATIONAL, v.43, pp.S455 - S459
- Indexed
- SCIE
SCOPUS
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 43
- Start Page
- S455
- End Page
- S459
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/86301
- DOI
- 10.1016/j.ceramint.2017.05.187
- ISSN
- 0272-8842
- Abstract
- In order to increase the outcoupling efficiency of organic light emitting diodes (OLEDs), a hexagonal array of air void optical scattering structures was formed on a glass substrate. The air void structure was fabricated by first depositing a monolayer of polystyrene (PS) spheres having a diameter of 820 nrn on the substrate. A layer of hydrogen silsesquioxane (HSQ) was then coated on the resulting monolayer and finally, annealing was carried out to burn out the PS spheres and to cure the HSQ layer. The air void optical scattering structure on the glass substrate interacted with the generated photons and suppressed the total internal reflection of light at the surface of the glass. As a result, the OLED fabricated on this glass exhibited a 10% increase in the optical output.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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