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Unlocking the Full Potential of Conducting Polymers for High‐Efficiency Organic Light‐Emitting Devices
Author(s) -
Huang YiHsiang,
Tsai WeiLung,
Lee WeiKai,
Jiao Min,
Lu ChunYang,
Lin ChunYu,
Chen ChienYu,
Wu ChungChih
Publication year - 2015
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.201404546
Subject(s) - oled , materials science , pedot:pss , optoelectronics , phosphorescence , quantum efficiency , coupling (piping) , conductive polymer , organic semiconductor , polymer , nanotechnology , optics , composite material , layer (electronics) , fluorescence , physics
By carefully tuning the thicknesses of low‐optical index PEDOT:PSS and high‐index ITO layers in organic light‐emitting devices (OLEDs), very high optical coupling efficiencies can be obtained through the generation of appropriate microcavity effects. These experiments result in an external quantum efficiency (EQE) of 33.7% for green phosphorescent OLEDs and even higher EQEs of 54.3% can be obtained by adopting an external out‐coupling lens.