Photosensitization of porous TiO2 semiconductor electrode with porphyrin derivatives

Tingli Ma, Kozo Inoue, Hiroaki Noma, Ken Yao, Eiichi Abe, Tsuyoshi Akiyma, Sunao Yamada

Research output: Contribution to journalConference articlepeer-review

Abstract

A series of porphyrin derivatives containing carboxylic-, sulfo-, and phenyl groups, 5,10,15,20-tetrakis(4-carboxyphenyl)-porphyrin(H2TCPP), 5,10,15,20-tetrakis(4-sulfophenyl)-porphyrin(H2TSPP), and 5,10,15,20-tetraphenyl)-porphyrin(H2TPP), were used as sensitizers for porous nanocrystalline TiO2. The photosensitization and the absorption properties dye absorbed TiO2 electrodes were examined. The incident photo to current efficiencies (IPCE) of 40% for H2TCPP/TiO2 has been obtained at the wavelength of a maximum absorption of the dye in the presence of iodide as an electron donor. Under the same conditions, the electrode of H2TSPP and H2TPP shown the efficiencies of 10% and 2%, respectively. We also explored the influence of different substitute on absorption spectra of TiO2 electrode coated with these dyes.

Original languageEnglish
Pages (from-to)379-382
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4220
Publication statusPublished - Dec 1 2000
EventAdvanced Photonic Sensors: Technology and Applications - Beijing, China
Duration: Nov 8 2000Nov 10 2000

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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