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Visualizing charge separation in bulk heterojunction organic solar cells

Author

Listed:
  • D. Amarasinghe Vithanage

    (Chemical Physics, Lund University Box 124)

  • A. Devižis

    (Center for Physical Sciences and Technology)

  • V. Abramavičius

    (Center for Physical Sciences and Technology
    Vilnius University)

  • Y. Infahsaeng

    (Chemical Physics, Lund University Box 124)

  • D. Abramavičius

    (Vilnius University
    State Key Laboratory of Supramolecular Structure and Materials, Jilin University)

  • R. C. I. MacKenzie

    (FRIAS, School of Soft Matter Research, University of Freiburg
    Materials and Manufacturing Engineering, Faculty of Engineering, University of Nottingham)

  • P. E. Keivanidis

    (Center for Nano Science and Technology at PoliMi, Istituto Italiano di Tecnologia)

  • A. Yartsev

    (Chemical Physics, Lund University Box 124)

  • D. Hertel

    (Physical Chemistry, University of Cologne)

  • J. Nelson

    (FRIAS, School of Soft Matter Research, University of Freiburg
    Centre for Plastic Electronics, Imperial College London)

  • V. Sundström

    (Chemical Physics, Lund University Box 124)

  • V. Gulbinas

    (Center for Physical Sciences and Technology
    Vilnius University)

Abstract

Solar cells based on conjugated polymer and fullerene blends have been developed as a low-cost alternative to silicon. For efficient solar cells, electron–hole pairs must separate into free mobile charges that can be extracted in high yield. We still lack good understanding of how, why and when carriers separate against the Coulomb attraction. Here we visualize the charge separation process in bulk heterojunction solar cells by directly measuring charge carrier drift in a polymer:fullerene blend with ultrafast time resolution. We show that initially only closely separated (

Suggested Citation

  • D. Amarasinghe Vithanage & A. Devižis & V. Abramavičius & Y. Infahsaeng & D. Abramavičius & R. C. I. MacKenzie & P. E. Keivanidis & A. Yartsev & D. Hertel & J. Nelson & V. Sundström & V. Gulbinas, 2013. "Visualizing charge separation in bulk heterojunction organic solar cells," Nature Communications, Nature, vol. 4(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3334
    DOI: 10.1038/ncomms3334
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