Solar Cells: Solvent Additive Effects on Small Molecule Crystallization in Bulk Heterojunction Solar Cells Probed During Spin Casting (Adv. Mater. 44/2013)

Authors

  • Louis A. Perez,

    1. Department of Materials, University of California, Santa Barbara, CA, USA
    Search for more papers by this author
  • Kang Wei Chou,

    1. Materials Science and Engineering Program, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
    Search for more papers by this author
  • John A. Love,

    1. Department of Materials, University of California, Santa Barbara, CA, USA
    Search for more papers by this author
  • Thomas S. van der Poll,

    1. Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, USA
    Search for more papers by this author
  • Detlef-M. Smilgies,

    1. Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY, USA
    Search for more papers by this author
  • Thuc-Quyen Nguyen,

    1. Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, USA
    Search for more papers by this author
  • Edward J. Kramer,

    1. Department of Materials, University of California, Santa Barbara, CA, USA
    2. Department of Chemical Engineering, University of California, Santa Barbara, CA, USA
    Search for more papers by this author
  • Aram Amassian,

    Corresponding author
    1. Materials Science and Engineering Program, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
    • Aram Amassian, Materials Science and Engineering Program, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955–6900 Saudi Arabia

      Guillermo C. Bazan, Department of Materials, University of California, Santa Barbara CA 93106 USA

    Search for more papers by this author
  • Guillermo C. Bazan

    Corresponding author
    1. Department of Materials, University of California, Santa Barbara, CA, USA
    2. Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, USA
    • Aram Amassian, Materials Science and Engineering Program, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955–6900 Saudi Arabia

      Guillermo C. Bazan, Department of Materials, University of California, Santa Barbara CA 93106 USA

    Search for more papers by this author

Abstract

image

In situ X-ray scattering is used by Guillermo C. Bazan, Aram Amassian and co-workers to investigate the kinetics of crystallization during spincasting of an organic bulk-heterojunction (BHJ) layer based on a small molecule-fullerene blend, as described on page 6380. The high-speed measurements capture evidence of an unexpected structural evolution and phase transformation of the small-molecule donor both during and shortly after spin-casting; such behavior is not known to occur in polymer-fullerene BHJ solar cells.

Ancillary