- Title
- Carbon nanotube-enhanced photoelectrochemical properties of metallo-octacarboxyphthalocyanines
- Creator
- Mphahlele, Nonhlanhla E., Roux, Lukas Le, Jafta, Charl J., Cele, Leskey, Mathe, Mkhulu K., Nyokong, Tebello, Kobayashi, Nagao, Ozoemena, Kenneth I.
- Type
- Article
- Identifier
- vital:7312
- Identifier
- http://hdl.handle.net/10962/d1020538
- Description
- The photoelectrochemistry of metallo-octacarboxyphthalocyanines (MOCPc, where M = Zn or Si(OH)2) integrated with MWCNTs for the development of dye-sensitized solar cells (DSSCs) is reported. The DSSC performance (obtained from the photo-chronoamperometric and photo-impedimetric data) decreased as ZnOCPc > (OH)2SiOCPc. The incorporation of the MWCNTs on the surface of the TiO2 film (MOCPc–MWCNT systems) gave higher photocurrent density than the bare MOCPc complexes. Also, from the EIS results, the MOCPc–MWCNT hybrids gave faster charge transport kinetics (approximately three times faster) compared to the bare MOCPc complexes. The electron lifetime was slightly longer (ca. 6 ms) at the ZnOCPc systems than at the (OH)2SiOCPc system (ca. 4 ms) meaning that the presence of the MWCNTs on the surface of the TiO2 film did not show any significant improvement on preventing charge recombination process.
- Description
- Original publication is available at http://dx.doi.org/10.1007/s10853-013-7710-1
- Format
- 7 p., pdf
- Publisher
- Springer
- Language
- English
- Relation
- Mphahlele, N. E., Roux, L. Le., Jafta, C. J., Cele, L., Mathe, M. K., Nyokong, T., Kobayashi, N. & Ozoemena, K. I. 2014. Carbon nanotube-enhanced photoelectrochemical properties of metallo-octacarboxyphthalocyanines. Journal of Materials Science, 49(1):340-346. Available: http://dx.doi.org/10.1007/s10853-013-7710-1.
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Nyokong, Tebello (Distinguished Professor)