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Organic Wrinkles for Energy Efficient Organic Light Emitting Diodes
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- Authors
- Jaehyun Moon, Eunhye Kim, Seung Koo Park, Keunsoo Lee, Jin-Wook Shin, Doo-Hee Cho, Jonghee Lee, Chul Woong Joo, Nam Sung Cho, Jun-Han Han, Byoung-Gon Yu, Seunghyup Yoo, Jeong-Ik Lee
- Issue Date
- 2015-11
- Citation
- Organic Electronics, v.26, pp.273-278
- ISSN
- 1566-1199
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- Extracting the confined light is of critical significance in achieving highly energy efficient organic light emitting diodes. To address the task of extracting the confined light, we here synthesize a new type of liquid prepolymer, which spontaneously forms wrinkles upon ultra-violet light exposure. The spontaneously formed organic wrinkle is successfully applied not only in extracting the confined light but also in inducing angular spectral stability. Simulations demonstrate that the wrinkles can lower incident angle of light impinging on the substrate/air interface and thus help extract a large portion of light delivered to the substrate. In particular, it is shown that geometrical optimization of the size and aspect ratio of wrinkles is important in obtaining the highest light extraction. With the simplicity of the process and size controllability, the proposed wrinkle-based approach can be readily realized over a large area, opening up a new avenue in various photonics applications.
- KSP Keywords
- Air interface, Based Approach, Geometrical optimization, Incident angle, Light exposure, Organic light-emitting diodes(OLEDS), Size controllability, Spectral stability, Ultraviolet light(UV), aspect ratio, energy-efficient