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5 November 2014Graphene composite anode for flexible polymer light emitting diode
Graphene is an emerging transparent conductor that plays a potential role in organic optoelectronic device. Here we
report the fabrication of a polymer light emitting diode employing graphene as anode by solution process. The
hydrophobic graphene on PET substrate is modified through interface engineering to obtain a good poly(3,4-
ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) wettability, which yields a composite electrode with low
sheet resistance, high optical transmittance and high work function. The resulting device exhibits good
electroluminescence emission and excellent flexibility, which is attributed to our high quality graphene and satisfying
interfacial modification. Such polymer light emitting diode employing this green and smart graphene composite anode
will promote the development of organic electroluminescent and photovoltaic devices toward a flexible and wearable
era.