Electronically coupled porphyrin-arene dyads for dye-sensitized solar cells

Cheng Wei Lee, Hsueh Pei Lu, Nagannagari Masi Reddy, Hsuan Wei Lee, Wei-Guang Diau*, Chen Yu Yeh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

An acetylene-linked porphyrin-perylene anhydride and an acetylene-linked porphyrin-naphthalic anhydride have been synthesized; the highly conjugated acetylenic bridge in these porpyrins efficiently mediates electronic interaction between the porphyrin and perylene units to extend the π-conjugation of the porphyrin dye and to cause both broadening and red shifts of both the Soret and Q absorption bands. This condition is a useful feature for efficient dye-sensitized solar cell applications. The optical, electrochemical and photovoltaic properties of the new linked anhydrides show that the HOMO-LUMO gap decreased upon extension of π-conjugation, indicating a strong electronic coupling between the porphyrin and the perylene or naphthalene unit.

Original languageEnglish
Pages (from-to)317-323
Number of pages7
JournalDyes and Pigments
Volume91
Issue number3
DOIs
StatePublished - 1 Dec 2011

Keywords

  • Dye-sensitized solar cells
  • Electronic coupling
  • Light-harvesting
  • Perylenes
  • Porphyrins
  • π-Conjugation

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