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Built-In Haze Glass-Fabric Reinforced Siloxane Hybrid Film for Efficient Organic Light-Emitting Diodes (OLEDs)
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- Authors
- Young-Woo Lim, O Eun Kwon, Seung-Mo Kang, Hyunsu Cho, Jonghee Lee, Young-Sam Park, Nam Sung Cho, Won-Yong Jin, Jaeho Lee, Hyunhwan Lee, Jae-Wook Kang, Seunghyup Yoo, Jaehyun Moon, Byeong-Soo Bae
- Issue Date
- 2018-08
- Citation
- Advanced Functional Materials, v.28, no.33, pp.1-9
- ISSN
- 1616-301X
- Publisher
- John Wiley & Sons
- Language
- English
- Type
- Journal Article
- Project Code
- 18ZB1200, Development of Core Technologies for Implantable Active Devices, Lee Jeong Ik
- Abstract
- 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.
- KSP Keywords
- 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)