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학술지 Random wrinkle structures for spectrum preserved warm white organic light emitting diodes
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저자
문제현, 이근수, 박승구, 주철웅, 신진욱, 이종희, 한준한, 조남성
발행일
202301
출처
Journal of Industrial and Engineering Chemistry, v.117, pp.298-306
ISSN
1226-086X
출판사
한국공업화학회
DOI
https://dx.doi.org/10.1016/j.jiec.2022.10.018
협약과제
22ZB1200, ICT 소재·부품·장비 자립기술 및 도전기술 개발, 황치선
초록
Surface wrinkles of mesoscopic size were formed by a single photocuring process of an in-house synthesized linear liquid pre-polymer. The linear relationship between the amplitude and the period of the wrinkles indicates the presence of constant compressive strain during the wrinkling process. The stiffness ratio of the hard film to the soft foundation decreases as the initial film becomes thinner, providing a quantitative measure for estimating the wrinkle size. As an application, mesoscopic wrinkles were investigated as optical structures for enhanced light outcoupling and angular spectral stability of red, green, blue, and white organic light emitting diodes.
키워드
Efficiency, Lighting panel, Spectrum, Surface metrology, White organic light emitting diode, Wrinkles
KSP 제안 키워드
Compressive strain, Hard film, Light outcoupling, Optical structure, Organic light-emitting diodes(OLEDS), Pre-polymer, Quantitative measure, Soft foundation, Spectral stability, Surface metrology, White organic light-emitting diodes