Solution processing of a small molecule, subnaphthalocyanine, for efficient organic photovoltaic cells

Biwu Ma*, Claire H. Woo, Yoshikazu Miyamoto, Jean M.J. Fréchet

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

Solution processing of the small molecule subnaphthalocyanine (SubNc) is carried out for the first time to form an electron-donor layer in efficient planar heterojunction organic photovoltaic cells (OPVs). Due to their unique properties, including high solubility, low tendency to aggregate, and strong light absorption in the visible light region, we are able to prepare amorphous SubNc films with high chargetransporting and light-harvesting properties via simple solution casting. By using SubNc as the donor and C 60 as the acceptor, we have demonstrated a planar heterojunction OPV with a power conversion efficiency of 1.5%, which represents one of the highest efficiencies for planar heterojunction OPVs based on solution processable small molecules to date. This work clearly shows that solution processing of light-harvesting small molecules has great potential in low-cost thin-film photovoltaic cells. Also SubNc and its derivatives are promising new-generation materials for OPVs.

Original languageEnglish (US)
Pages (from-to)1413-1417
Number of pages5
JournalChemistry of Materials
Volume21
Issue number8
DOIs
StatePublished - Apr 28 2009
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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