Shape- and functionality-controlled organization of TiO2- porphyrin-C60 assemblies for improved performance of photochemical solar cells

Taku Hasobe, Shunichi Fukuzumi, Shigeki Hattori, Prashant V. Kamat

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Shape- and functionality-controlled organization of porphyrin derivatives-C60 supramolecular assemblies using TiO2 nanotubes and nanoparticles has been achieved for the development of photochemical solar cells. The differences in the efficiency of light-energy conversion of these solar cells are explained on the basis of the geometrical orientation of the porphyrins with respect to the TiO2 surface and the supramolecular complex formed with C60. The maximum photon-conversion efficiency (IPCE) of 60% obtained with TiO2 nanotube architecture is higher than the value obtained with nanoparticle architecture. The results presented in this study show the importance of substrate morphology in promoting electron transport within the mesoscopic semiconductor film.

Original languageEnglish
Pages (from-to)265-272
Number of pages8
JournalChemistry - An Asian Journal
Volume2
Issue number2
DOIs
Publication statusPublished - 2007 Jul 2

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Keywords

  • Electrophoresis
  • Fullerenes
  • Nanotubes
  • Organic solar cells
  • Photoelectrochemistry
  • Porphyrin

ASJC Scopus subject areas

  • Biochemistry
  • Organic Chemistry

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