Photopolymerization effects on the external quantum efficiency of fullerene/zinc phthalocyanine heterojunction solar cells

  • Masahiro Kato
    Department of Energy Science and Engineering, Nagoya University 1 , Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
  • Masato Nakaya
    Department of Energy Science and Engineering, Nagoya University 1 , Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
  • Shinta Watanabe
    Department of Energy Science and Engineering, Nagoya University 1 , Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
  • Koichi Okamoto
    Department of Physics and Electronics, Osaka Prefecture University 2 , Gakuen-cho, Naka-ku, Sakai-shi, Osaka 599-8531, Japan
  • Jun Onoe
    Department of Energy Science and Engineering, Nagoya University 1 , Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

抄録

<jats:p>We have demonstrated that the external quantum efficiency (EQE) of organic photovoltaic cells with a heterojunction of zinc phthalocyanine (ZnPc) and fullerene (C60) bilayer films, which are used as a donor and an acceptor, respectively, is improved by photopolymerization (photon energy: 2–4 eV and light fluence: 0.4 W cm−2) between adjacent C60 molecules via a [2 + 2] cycloadditional four-membered ring. Comparison of the structural and physical properties of ZnPc, C60, and ZnPc/C60 bilayer films between before and after photoirradiation indicated that an increase in the number of photogenerated intra- and inter-molecular excitons in photopolymerized C60 film mainly contributes toward improvement of the EQE in a wavelength range of 400–600 nm.</jats:p>

収録刊行物

  • AIP Advances

    AIP Advances 11 (7), 2021-07-01

    AIP Publishing

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