High performance low band gap polymer solar cells with a non-conventional acceptor

Youjun He, Jingbi You, Letian Dou, Chun Chao Chen, Eric Richard, Kitty C. Cha, Yue Wu, Gang Li, Yang Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

29 Citations (Scopus)

Abstract

A novel C70 fullerene derivative was designed and synthesized by [4+2] cyclic addition reaction between indene derivative (methyl 1H-indene-3- carboxylate) and C70. The absorption and photoluminescence of H120 and its mixed films with different polymer donor materials were investigated, as well as its electrochemical property and electron mobility. It was found that H120 has 0.05 eV higher LUMO level than that of PC70BM. Its electron mobility reached 6.32 × 10-4cm2V-1s-1, which is slightly lower than 9.55 × 10-4cm2V-1s-1of PC70BM. The photovoltaic devices based on P3HT, and two high efficiency low band gap polymers, PBDTTT-C and PBDTTDPP as donors, with H120 as an acceptor gave power conversion efficiencies of 4.2%, 6.0% and 6.2%, respectively.
Original languageEnglish
Pages (from-to)7616-7618
Number of pages3
JournalChemical Communications
Volume48
Issue number61
DOIs
Publication statusPublished - 7 Aug 2012
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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