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Bipolar Charge Transport in Fullerene Molecules in a Bilayer and Blend of Polyfluorene Copolymer and Fullerene
Article in journal
Abay Gadisa, Kristofer Tvingstedt, Koen Vandewal, Fengling Zhang, Jean V Manca, Olle Inganäs
Publication Year
ADVANCED MATERIALS, 2010, (22)9, 1008
Link to Source (DOI)
<p>Efficient polymer solar cells typically contain the fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester (PCBM), which promotes dissociation of excited states and enhances charge transport. The ability of PCBM to transport holes in solar cell bulk heterojunction films is monitored via the electroluminescence emission of a bulk heterojunction blend of PCBM and a polyfluorene copolymer. In polymer/fullerene bilayer diodes, fullerene emission is also observed.</p>