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 - 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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