Organic solar cells made from bi-layer thin-film heterojunctions having poly((2-methoxy-5-(2′-ethylhexyloxy)-p-phenylene)vinylene) (MEH-PPV) as an electron donor and fulleropyrrolidine derivatives as an electron acceptor were investigated. We synthesized soluble fulleropyrrolidine derivatives substituted different chain lengths for the organic solar cell. Due to the high solubility and sufficiently long chain length of fulleropyrrolidine derivatives, though those are monomers, a thin film (about 50 nm) could be fabricated individually by the spin-coating method. The fill factor of the bi-layer device was achieved to be 0.40, which is higher than that of the single-layer device by a polymer/fulleropyrrolidine derivative blend film of 0.29, due to the decrease of the recombination.
Preparations and Photovoltaic Properties of Thin Films Using Soluble Fulleropyrrolidine Derivatives for Organic Solar Cells
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Kim, M, Shin, WS, Jin, S, Fujida, K, Tsutsui, T, & Lee, J. "Preparations and Photovoltaic Properties of Thin Films Using Soluble Fulleropyrrolidine Derivatives for Organic Solar Cells." Proceedings of the ASME 2006 International Solar Energy Conference. Solar Energy. Denver, Colorado, USA. July 8–13, 2006. pp. 119-123. ASME. https://doi.org/10.1115/ISEC2006-99064
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