Full Paper

Shape- and Functionality-Controlled Organization of TiO2–Porphyrin–C60 Assemblies for Improved Performance of Photochemical Solar Cells

  1. Taku Hasobe Dr.1,2,3,
  2. Shunichi Fukuzumi Prof.1,
  3. Shigeki Hattori1,
  4. Prashant V. Kamat Prof.2

Article first published online: 9 JAN 2007

DOI: 10.1002/asia.200600358

Issue

Chemistry – An Asian Journal

Chemistry – An Asian Journal

Volume 2, Issue 2, pages 265–272, February 5, 2007

Additional Information

How to Cite

Hasobe, T., Fukuzumi, S., Hattori, S. and Kamat, Prashant V. (2007), Shape- and Functionality-Controlled Organization of TiO2–Porphyrin–C60 Assemblies for Improved Performance of Photochemical Solar Cells. Chem. Asian J., 2: 265–272. doi: 10.1002/asia.200600358

Author Information

  1. 1

    Department of Material and Life Science, Graduate School of Engineering, Osaka University, Suita, SORST, Japan Science and Technology Agency, Osaka 565-0871, Japan, Fax: (+81) 6-6879-7370

  2. 2

    Radiation Laboratory, Departments of Chemistry & Biochemistry and Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA, Fax: (+1) 574-631-8068

  3. 3

    Current address: School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), Nomi, Ishikawa, 923-1292, Japan

Publication History

  1. Issue published online: 29 JAN 2007
  2. Article first published online: 9 JAN 2007
  3. Manuscript Received: 23 OCT 2006

Funded by

  • Ministry of Education, Culture, Sports, Science, and Technology, Japan
  • Office of Basic Energy Science, U.S. Department of Energy

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Keywords:

  • electrophoresis;
  • fullerenes;
  • nanotubes;
  • organic solar cells;
  • photoelectrochemistry;
  • porphyrin

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.

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