A Facile Route to Efficient, Low-Cost Flexible Organic Light-Emitting Diodes: Utilizing the High Refractive Index and Built-In Scattering Properties of Industrial-Grade PEN Substrates

作者：Kim Eunhye; Cho Hyunsu; Kim Kyoohyun; Koh Tae Wook; Chung Jin; Lee Jonghee; Park YongKeun; Yoo Seunghyup^*

来源：Advanced Materials, 2015, 27(9): 1624-+.

DOI：10.1002/adma.201404862

An industrial-grade polyethylene naphthalate (PEN) substrate is explored as a simple, cost-effective platform for high-efficiency organic light-emitting diodes (OLEDs). Its high refractive index, combined with the built-in scattering properties inherent to the industrial-grade version, allows for a significant enhancement in outcoupling without any extra structuring or special optical elements. Flexible, color-stable OLEDs with efficiency close to 100 lm W-1 are demonstrated.

• 出版日期2015-3-4