Organic Photovoltaics Based on Poly(3,4-phenylenedioxy-2,5-thienylenevinylene)s

DOI Web Site Web Site 参考文献30件 オープンアクセス
  • SHIBASAKI Kosuke
    Institute of Materials Science, Graduate School of Pure and Applied Sciences, University of Tsukuba
  • YASUDA Takeshi
    Research Center for Functional Materials, National Institute for Materials Science (NIMS) Tsukuba Research Center for Interdisciplinary Materials Science, University of Tsukuba
  • KIJIMA Masashi
    Tsukuba Research Center for Interdisciplinary Materials Science, University of Tsukuba Division of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba

この論文をさがす

抄録

Poly(3,4-phenylenedioxy-2,5-thienylenevinylene)s with a fluorine substituent at the phenylene moiety (PPhDOTFV) and without the substituent (PPhDOTV) were synthesized by Stille coupling polymerization. They exhibited good solubility in common organic solvents owing to a branched alkyl chain at the phenylene moiety and a narrow optical bandgap of 1.66 eV due to an increased conjugated length caused by the vinylene bridge. Both the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels of PPhDOTFV were 0.2 eV deeper than those of PPhDOTV. Organic photovoltaic cells (OPVs) using PPhDOTV:PC70BM exhibited a short-circuit current density (Jsc) of 3.30 mA cm−2, an open-circuit voltage (Voc) of 0.52 V, and a power conversion efficiency of 0.91%, as compared to 1.62 mA cm−2, 0.68 V, and 0.45%, respectively, for OPVs using PPhDOTFV:PC70BM. The Jsc value of PPhDOTV-based OPVs was higher than that of PPhDOTFV-based OPVs because of a large LUMO energy offset between PPhDOTV and PC70BM. On the other hand, the Voc value of PPhDOTV-based OPVs was lower than that of PPhDOTFV-based OPVs because of a small energy difference between the HOMO level of PPhDOTV and the LUMO level of PC70BM.

収録刊行物

  • Electrochemistry

    Electrochemistry 85 (5), 241-244, 2017

    公益社団法人　電気化学会

参考文献 (30)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ