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Published Online: 22 December 2008
Accepted: December 2008
Appl. Phys. Lett. 93, 252104 (2008); https://doi.org/10.1063/1.3055608
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We investigated the charge carrier mobility in pristine poly(3-hexyl thiophene-2,5-diyl) (P3HT):[6,6]-phenyl-C61 butyric acid methyl ester (PCBM) blend devices by applying the time resolved photoconductivity experiment in dependence on the donor:acceptor ratio. We observe a bipolar transport in all studied samples ranging from pure polymer to polymer:fullerene with 90% PCBM content. For the ratios P3HT:PCBM 1:4 and 1:1 we observe two transit times in the electron current transients as well as hole double transients for P3HT:PCBM 1:2. We find high hole and electron mobilities in the order of 103102cm2Vs for a concentration of 90% PCBM in the blend.
A.B. thanks the German Federal Environmental Foundation (Deutsche Bundesstiftung Umwelt, DBU) for funding. V.D.’s work at the ZAE Bayern is financed by the Bavarian Ministry of Economic Affairs, Infrastructure, Transport and Technology.
  1. 1. R. Green, A. Morfa, A. J. Ferguson, N. Kopidakis, G. Rumbles, and S. E. Shaheen, Appl. Phys. Lett. https://doi.org/10.1063/1.2836267 92, 033301 (2008). Google ScholarScitation
  2. 2. C. Deibel, A. Wagenpfahl, and V. Dyakonov, Phys. Status Solidi (RRL) 2, 175 (2008). Google ScholarCrossref
  3. 3. S. M. Tuladhar, D. Poplavskyy, S. A. Choulis, J. R. Durrant, D. D. C. Bradley, and J. Nelson, Adv. Funct. Mater. https://doi.org/10.1002/adfm.200400337 15, 1171 (2005). Google ScholarCrossref
  4. 4. M. Shibao, T. Morita, W. Takashima, and K. Kaneto, Jpn. J. Appl. Phys., Part 2 https://doi.org/10.1143/JJAP.46.L123 46, L123 (2007). Google ScholarCrossref
  5. 5. E. von Hauff, J. Parisi, and V. Dyakonov, J. Appl. Phys. https://doi.org/10.1063/1.2234806 100, 043702 (2006). Google ScholarScitation
  6. 6. J. Huang, G. Li, and Y. Yang, Appl. Phys. Lett. https://doi.org/10.1063/1.2045554 87, 112105 (2005). Google ScholarScitation
  7. 7. P. M. Borsenberger, L. T. Pautmeier, and H. Bässler, Phys. Rev. B https://doi.org/10.1103/PhysRevB.46.12145 46, 12145 (1992). Google ScholarCrossref
  8. 8. C. Deibel, A. Baumann, and V. Dyakonov, Appl. Phys. Lett. https://doi.org/10.1063/1.3005593 93, 163303 (2008). Google ScholarScitation
  9. 9. H. Scher and E. W. Montroll, Phys. Rev. B https://doi.org/10.1103/PhysRevB.12.2455 12, 2455 (1975). Google ScholarCrossref
  10. 10. C. Melzer, E. J. Koop, V. D. Mihailetchi, and P. W. M. Blom, Adv. Funct. Mater. https://doi.org/10.1002/adfm.200305156 14, 865 (2004). Google ScholarCrossref
  11. 11. C. Deibel, A. Baumann, J. Lorrmann, and V. Dyakonov, Mater. Res. Soc. Symp. Proc. 1031E, 1031–H09 (2008). Google Scholar
  12. 12. H. Iino and J. Hanna, Opto-Electron. Rev. 13, 295 (2005). Google Scholar
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