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학술지 Organic Wrinkles for Energy Efficient Organic Light Emitting Diodes
Cited 44 time in scopus Download 2 time Share share facebook twitter linkedin kakaostory
저자
문제현, 김은혜, 박승구, 이근수, 신진욱, 조두희, 이종희, 주철웅, 조남성, 한준한, 유병곤, 유승협, 이정익
발행일
201511
출처
Organic Electronics, v.26, pp.273-278
ISSN
1566-1199
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.orgel.2015.07.046
협약과제
14ZB1200, 교감형 스마트 OLED 광원 핵심기술개발사업, 유병곤
초록
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.
키워드
Light extraction, Organic light emitting diodes, Spectral stability, Wrinkles
KSP 제안 키워드
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