Silver-nanoparticle-assisted photocurrent generation in polythiophene-fullerene thin films

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  • You, Jing
    Department of Materials Physics and Chemistry, Graduate School of Engineering, Kyushu University
  • Arakawa, Taichi
    Department of Materials Physics and Chemistry, Graduate School of Engineering, Kyushu University
  • Munaoka, Takatoshi
    Department of Materials Physics and Chemistry, Graduate School of Engineering, Kyushu University
  • Akiyama, Tsuyoshi
    Department of Materials Science, School of Engineering, The University of Shiga Prefecture | Department of Materials Physics and Chemistry, Graduate School of Engineering, Kyushu University
  • Takahashi, Yukina
    Department of Applied Chemistry, Faculty of Engineering, Kyushu University | Department of Materials Physics and Chemistry, Graduate School of Engineering, Kyushu University
  • 山田, 淳
    Department of Applied Chemistry, Faculty of Engineering, Kyushu University | Department of Materials Physics and Chemistry, Graduate School of Engineering, Kyushu University

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<jats:p> We have investigated the effect of silver nanoparticles (AgPs) on the photocurrent generation of a polyphiophene-fullerene photovoltaic film. Poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C<jats:sub>61</jats:sub>-butyric acid methylester (PCBM) were used for the electron donor and acceptor, respectively. First, AgPs were electrostatically deposited upon the surface of an indium tin oxide (ITO) electrode via a polycation. Then, a film of P3HT or a mixture of P3HT and PCBM was prepared by spin coating. The thickness of the film was evaluated by atomic force microscopy. Absorption and fluorescence spectral measurements were carried out to investigate the effects of AgPs. Photocurrent spectra were also measured, and the effects of AgPs on photocurrent enhancement were verified. </jats:p>

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