title: Broadband light extraction from white organic light-emitting devices by employing corrugated metallic electrodes with dual periodicity.
abstract: A dual-periodic corrugation consisting of two sets of gratings with different periods to realize a broadband light extraction in white organic light-emitting diodes (WOLEDs) is shown. A 37% enhancement in current efficiency and 48% enhancement in the external quantum efficiency compared to those of the conventional planar devices have been obtained. Besides the much improved efficiency, the dual-periodic corrugated WOLEDs exhibit satisfying viewing characteristics.
authors.affiliation: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P.R. China.
authors.forename: Yan-Gang
authors.initials: YG
authors.lastname: Bi
authors.forename: Jing
authors.initials: J
authors.lastname: Feng
authors.forename: Yun-Fei
authors.initials: YF
authors.lastname: Li
authors.forename: Xu-Lin
authors.initials: XL
authors.lastname: Zhang
authors.forename: Yue-Feng
authors.initials: YF
authors.lastname: Liu
authors.forename: Yu
authors.initials: Y
authors.lastname: Jin
authors.forename: Hong-Bo
authors.initials: HB
authors.lastname: Sun
keywords: dual-periodic corrugation; light extraction; surface-plasmon polaritons; white organic light-emitting devices