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학술지 Built-In Haze Glass-Fabric Reinforced Siloxane Hybrid Film for Efficient Organic Light-Emitting Diodes (OLEDs)
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저자
임영우, 권오은, 강성모, 조현수, 이종희, 박영삼, 조남성, 진원용, 이재호, 이현환, 강재욱, 유승협, 문제현, 배병수
발행일
201808
출처
Advanced Functional Materials, v.28 no.33, pp.1-9
ISSN
1616-301X
출판사
John Wiley & Sons
DOI
https://dx.doi.org/10.1002/adfm.201802944
협약과제
18ZB1200, 임플란터블 능동 전자소자 원천기술 개발, 이정익
초록
Substrates with high transmittance and high haze are desired for increasing the light outcoupling efficiency of organic light-emitting diodes (OLEDs). However, most of the polymer films used as substrate have high transmittance and low haze. Herein, a facile route to fabricate a built-in haze glass-fabric reinforced siloxane hybrid (GFRH) film having high total transmittance (≈89%) and high haze (≈89%) is reported using the scattering effect induced by refractive index contrast between the glass fabric and the siloxane hybrid (hybrimer). The hybrimer exhibiting large refractive index contrast with the glass fabric is synthesized by removing the phenyl substituents. Besides its optical properties, the hazy GFRH films exhibit smooth surface (Rsq = 0.2 nm), low thermal expansion (13 ppm °C?닋1), high chemical stability, and dimensional stability. Owing to the outstanding properties of the GFRH film, OLED is successfully fabricated onto the film exhibiting 74% external quantum efficiency enhancement. The hazy GFRH's unique optical properties, excellent thermal stability, outstanding dimensional stability, and the ability to perform as a transparent electrode enable them as a wide ranging substrate for the flexible optoelectronic devices.
키워드
haze, hybrimers, light outcoupling efficiency, organic light-emitting diodes
KSP 제안 키워드
Built-in, External Quantum Efficiency, Flexible optoelectronic devices, Glass fabric, High chemical stability, High haze, High transmittance, Hybrid films, Light outcoupling, Low thermal expansion, Organic light-emitting diodes(OLEDS)