Improved Performance of Polymer Bulk Heterojunction Solar Cells Through the Reduction of Phase Separation via Solvent Additives

Authors

  • Corey V. Hoven,

    1. Departments of Chemistry & Biochemistry Department of Materials Institute for Polymers and Organic Solids University of California Santa Barbara, CA 93106 (USA)
    Search for more papers by this author
  • Xuan-Dung Dang,

    1. Departments of Chemistry & Biochemistry Department of Materials Institute for Polymers and Organic Solids University of California Santa Barbara, CA 93106 (USA)
    Search for more papers by this author
  • Robert C. Coffin,

    1. Departments of Chemistry & Biochemistry Department of Materials Institute for Polymers and Organic Solids University of California Santa Barbara, CA 93106 (USA)
    Search for more papers by this author
  • Jeff Peet,

    1. Departments of Chemistry & Biochemistry Department of Materials Institute for Polymers and Organic Solids University of California Santa Barbara, CA 93106 (USA)
    Search for more papers by this author
  • Thuc-Quyen Nguyen,

    Corresponding author
    1. Departments of Chemistry & Biochemistry Department of Materials Institute for Polymers and Organic Solids University of California Santa Barbara, CA 93106 (USA)
    • Departments of Chemistry & Biochemistry Department of Materials Institute for Polymers and Organic Solids University of California Santa Barbara, CA 93106 (USA).
    Search for more papers by this author
  • Guillermo C. Bazan

    Corresponding author
    1. Departments of Chemistry & Biochemistry Department of Materials Institute for Polymers and Organic Solids University of California Santa Barbara, CA 93106 (USA)
    • Departments of Chemistry & Biochemistry Department of Materials Institute for Polymers and Organic Solids University of California Santa Barbara, CA 93106 (USA).
    Search for more papers by this author

Abstract

original image

A high-boiling-point additive that favors both poly[(4,4-didodecyldithieno[3,2-b:2′,3′-d]silole)-2,6-diyl-alt-(2,1,3-benzoxadiazole)-4,7-diyl] and PC71BM in a bulk heterojunction solar cell is used to reduce large-scale aggregation and phase separation, which increases device performance. This is in contrast to the majority of high-boiling-point additives that improve performance by increasing phase separation.

Ancillary