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Molecules 2016, 21(8), 1025;

Porphyrin Dye-Sensitized Zinc Oxide Aggregated Anodes for Use in Solar Cells

Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan
Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
Research Center for Sustainable Energy and Nanotechnology, National Chung Hsing University, Taichung 402, Taiwan
Authors to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 17 June 2016 / Revised: 20 July 2016 / Accepted: 3 August 2016 / Published: 5 August 2016
(This article belongs to the Special Issue Dye‐Sensitized Solar Cells)
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Porphyrin YD2-o-C8-based dyes were employed to sensitize room-temperature (RT) chemical-assembled ZnO aggregated anodes for use in dye-sensitized solar cells (DSSCs). To reduce the acidity of the YD2-o-C8 dye solution, the proton in the carboxyl group of a porphyrin dye was replaced with tetrabuthyl ammonium (TBA+) in this work. The short-circuit current density (Jsc) of the YD2-o-C8-TBA-sensitized ZnO DSSCs is higher than that of the YD2-o-C8-sensitized cells, resulting in the improvement of the efficiency of the YD2-o-C8-based ZnO DSSCs. With an appropriate incorporation of chenodeoxycholic acid (CDCA) as coadsorbate, the Jsc and efficiency of the YD2-o-C8-TBA-sensitized ZnO DSSC are enhanced due to the improvement of the incident-photon-to-current efficiency (IPCE) values in the wavelength range of 400–450 nm. Moreover, a considerable increase in Jsc is achieved by the addition of a light scattering layer in the YD2-o-C8-TBA-sensitized ZnO photoanodes. Significant IPCE enhancement in the range 475–600 nm is not attainable by tuning the YD2-o-C8-TBA sensitization processes for the anodes without light scattering layers. Using the RT chemical-assembled ZnO aggregated anode with a light scattering layer, an efficiency of 3.43% was achieved in the YD2-o-C8-TBA-sensitized ZnO DSSC. View Full-Text
Keywords: dye-sensitized solar cells; porphyrin dyes; ZnO anode dye-sensitized solar cells; porphyrin dyes; ZnO anode

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Syu, Y.-K.; Tingare, Y.; Lin, S.-Y.; Yeh, C.-Y.; Wu, J.-J. Porphyrin Dye-Sensitized Zinc Oxide Aggregated Anodes for Use in Solar Cells. Molecules 2016, 21, 1025.

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