Slowup of Bimolecular Recombination in Organic Polymer Solar Cells

J.-M. Nunzia, G. Juškab, F. Jeana and K. Arlauskasb aDepartment of Solid State Electronics, Vilnius University, Sauletekio 9, build. 3, 01513 Vilnius, Lithuania bEquipe de Recherche Technologique Cellules Solaires Photovoltaïques Plastiques, Université d'Angers 2, boulevard Lavoisier, 49045 Angers, France

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Received: 22 08 2004;

For the retrieval of best polymers for effective organic solar cells as testing parameter we have used the coefficient of bimolecular recombination (B). The B measurement demonstrated that in pure MEH-PPV layers its value is close to the value of Langevin recombination coefficient (BL), while in case of perylene/MEH-PPV junction layers the ratio B/BL≅0.013, and in blends of MEH-PPV with PCBM B/B_L<0.01.

DOI: 10.12693/APhysPolA.107.377 PACS numbers:72.80.Le, 72.20.Jv