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Decoupling Charge Transport and Electroluminescence in a High Mobility Polymer Semiconductor
Author(s) -
Harkin David J.,
Broch Katharina,
Schreck Maximilian,
Ceymann Harald,
Stoy Andreas,
Yong ChawKeong,
Nikolka Mark,
McCulloch Iain,
Stingelin Natalie,
Lambert Christoph,
Sirringhaus Henning
Publication year - 2016
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.201600851
Subject(s) - materials science , electron mobility , ambipolar diffusion , quantum yield , optoelectronics , semiconductor , electroluminescence , organic semiconductor , charge carrier , acceptor , intermolecular force , amorphous solid , chemical physics , band gap , oled , fluorescence , photochemistry , electron , nanotechnology , molecule , chemistry , condensed matter physics , organic chemistry , physics , optics , layer (electronics) , quantum mechanics
Fluorescence enhancement of a high‐mobility polymer semiconductor is achieved via energy transfer to a higher fluorescence quantum yield squaraine dye molecule on 50 ps timescales. In organic light‐emitting diodes, an order of magnitude enhancement of the external quantum efficiency is observed without reduction in the charge‐carrier mobility resulting in radiances of up to 5 W str −1 m −2 at 800 nm.