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Ebenhoch, Bernd; Prasetya, Nor B. A.; Rotello, Vincent M.; Cooke, Graeme; Samuel, Ifor D. W.
Journal of materials chemistry. A, 01/2015, Letnik: 3, Številka: 14Journal Article
We report the fabrication of solution-processed bulk heterojunction devices from subphthalocyanine (SubPc) units as the acceptor component and conventional polymeric donor materials such as MEH-PPV, P3HT and PTB7. The high solubility of the SubPc derivatives facilitated the formation of efficient donor/acceptor networks and provided power conversion efficiencies of 0.4% with MEH-PPV, 1.1% with P3HT and 3.5% with PTB7. A clear contribution of photon harvesting by the acceptor was identified from the external quantum efficiency spectra. Analysis of the current–voltage characteristics and photoluminescence quenching revealed trap-assisted and geminate recombination as a loss mechanism. Our results show that solution-processable SubPcs are a promising alternative to fullerenes for polymer solar cells.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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