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18 June 2004 Realization and characterization of plastic photovoltaic cells
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Organic solar cells based on interpenetrated network of conjugated polymer as donor and fullerene derivative as acceptor materials have a great potential for improvement of the efficiency. We fabricated a device based on a composite of poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene (MEH-PPV) and [6,6]-phenyl C60 butyric acid methyl ester (PCBM). Surface treatment, insertion of interfacial layers, and improvement of the morphology of the active layer significantly increase the photovoltaic performances of the structure. We obtained an open circuit voltage of 0.87 V and short circuit current density of -8.4 mA/cm2 under 100 mW/cm2 AM 1.5 solar simulator illumination, yielding a 2.9 % power conversion efficiency. Two others fullerene derivatives were synthesized in order to get a stronger acceptor. The electrical and optical properties of devices made with MEH-PPV and these acceptors are investigated.
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Salima Alem, Remi de Bettignies, Michel Cariou, Emmanuel Allard, Stephanie Chopin, Jack Cousseau, Sylvie Dabos-Seignon, and Jean-Michel Nunzi "Realization and characterization of plastic photovoltaic cells", Proc. SPIE 5351, Organic Photonic Materials and Devices VI, (18 June 2004);

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