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Journal of Materials Science

, Volume 44, Issue 13, pp 3462–3465 | Cite as

Improved photovoltaic properties of solar cells based on poly [9, 9′-dioctyl-fluorene-co-bithiophene] and a soluble fullerene by microwave annealing

  • Fen Qiao
  • Aimin LiuEmail author
  • Zengquan Hu
  • Yiting Liu
  • Shuwen Yu
  • Ziguang Zhou
Article

Abstract

Enhanced photovoltaic characteristics of bulk heterojunction organic solar cells based on blends of poly [9, 9′-dioctyl-fluorene-co-bithiophne] (F8T2) and 1-(3-methoxycarbonyl)-propyl-1-phenyl-(6,6) C61 were achieved through microwave annealing treatment. The absorption and photoluminescence spectra of the active layers with 1:1 ratio in weight were characterized under microwave and common annealing oven. Compared with the oven annealing, the absorption spectra of active layer were enhanced in intensity as well as the wavelength range of absorption little broadened after microwave annealing; the intensities of PL spectra of the blends were also further quenched compared with that of pristine F8T2. The highest power conversation efficiency of 1.18% was achieved by microwave annealing for 90 s compared with 0.86% using annealing oven. The enhanced performance of cells is attributed to the improved morphology and modified charge transport pathways through microwave annealing.

Keywords

Active Layer Power Conversion Efficiency Organic Solar Cell Polymer Solar Cell Annealing Oven 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

Authors thank Yang ping Ou for meaningful discussions in experiments.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Fen Qiao
    • 1
  • Aimin Liu
    • 1
    Email author
  • Zengquan Hu
    • 1
  • Yiting Liu
    • 1
  • Shuwen Yu
    • 1
  • Ziguang Zhou
    • 1
  1. 1.School of Physics and Optoelectronic TechnologyDalian University of TechnologyDalianPeople’s Republic of China

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