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Organic Light Emitting Diode with Uniform Luminance Distribution and Enhanced Efficiency via Random Embossing Structure
- Authors
- Lee, Keunsoo; Lee, Jonghee; Joo, Chul Woong; Kim, Joo Yeon; Cho, Doo-Hee; Lee, Jeong-Ik; Chu, Hye Yong; Moon, Jaehyun; Ju, Byeong-Kwon
- Issue Date
- 2014
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- ECS SOLID STATE LETTERS, v.3, no.11, pp.R56 - R59
- Indexed
- SCIE
SCOPUS
- Journal Title
- ECS SOLID STATE LETTERS
- Volume
- 3
- Number
- 11
- Start Page
- R56
- End Page
- R59
- ISSN
- 2162-8742
- Abstract
- Using the lateral phases separation of a binary immiscible polymer blend, we have fabricated a random embossing structure (RES). The RES was investigated as a potential structure for organic light-emitting diode (OLED) light extraction. Our RES yields uniform light extraction in a broad angle (0 degrees similar to 70 degrees) range with spectral stability. Blue phosphorescence OLEDs equipped with the RES showed an enhancement of 20% in external quantum efficiency (EQE) and spectral stability within Delta x, y < 0.01 in a viewing angle range of 0 degrees similar to 70 degrees. Our RES provides a new and practical approach for achieving enhanced efficiency and spectral stability of OLEDs. (C) 2014 The Electrochemical Society. All rights reserved.
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Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
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