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Broadband Light Extraction from White Organic Light‐Emitting Devices by Employing Corrugated Metallic Electrodes with Dual Periodicity
Author(s) -
Bi YanGang,
Feng Jing,
Li YunFei,
Zhang XuLin,
Liu YueFeng,
Jin Yu,
Sun HongBo
Publication year - 2013
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201302367
Subject(s) - broadband , materials science , optoelectronics , planar , oled , diode , dual (grammatical number) , electrode , computer science , optics , telecommunications , nanotechnology , physics , computer graphics (images) , layer (electronics) , quantum mechanics , art , literature
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.