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 language | English |
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Pages (from-to) | 379-382 |
Number of pages | 4 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 4220 |
Publication status | Published - 2000 |
Event | Advanced Photonic Sensors: Technology and Applications - Beijing, China Duration: Nov 8 2000 → Nov 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