Naphthodithiophene-naphthobisthiadiazole copolymers for solar cells: Alkylation drives the polymer backbone flat and promotes efficiency

Itaru Osaka, Takeshi Kakara, Noriko Takemura, Tomoyuki Koganezawa, Kazuo Takimiya

研究成果: Article査読

270 被引用数 (Scopus)

抄録

We show that rational functionalization of the naphthodithiophene core in copolymers based on naphthodithiophene and naphthobisthiadiazole improves the solubility without an alteration of the electronic structure. Surprisingly, the introduction of linear alkyl chains brings about a drastic change in polymer orientation into the face-on motif, which is beneficial for the charge transport in solar cells. As a result, the present polymers exhibit high power conversion efficiencies of up to ∼8.2% in conventional single-junction solar cells.

本文言語English
ページ(範囲)8834-8837
ページ数4
ジャーナルJournal of the American Chemical Society
135
24
DOI
出版ステータスPublished - 2013 6 19
外部発表はい

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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