Broadband light extraction from white organic light-emitting devices by employing corrugated metallic electrodes with dual periodicity

Yan-Gang Bi; Jing Feng; Yun-Fei Li; Xu-Lin Zhang; Yue-Feng Liu; Yu Jin; Hong-Bo Sun

doi:10.1002/adma.201302367

Broadband light extraction from white organic light-emitting devices by employing corrugated metallic electrodes with dual periodicity

Adv Mater. 2013 Dec 23;25(48):6969-74. doi: 10.1002/adma.201302367. Epub 2013 Sep 24.

Authors

Yan-Gang Bi¹, Jing Feng, Yun-Fei Li, Xu-Lin Zhang, Yue-Feng Liu, Yu Jin, Hong-Bo Sun

Affiliation

¹ State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P.R. China.

PMID: 24352984
DOI: 10.1002/adma.201302367

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.

Keywords: dual-periodic corrugation; light extraction; surface-plasmon polaritons; white organic light-emitting devices.

Publication types

Research Support, Non-U.S. Gov't