title: Porphyrin Dye-Sensitized Zinc Oxide Aggregated Anodes for Use in Solar Cells.
abstract: 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.
authors.affiliation: Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan. hibaby403@hotmail.com.
authors.forename: Yu-Kai
authors.initials: YK
authors.lastname: Syu
authors.affiliation: Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan. yogeshtingare@yahoo.co.in.|Research Center for Sustainable Energy and Nanotechnology, National Chung Hsing University, Taichung 402, Taiwan. yogeshtingare@yahoo.co.in.
authors.forename: Yogesh
authors.initials: Y
authors.lastname: Tingare
authors.affiliation: Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan. tracymc15@gmail.com.
authors.forename: Shou-Yen
authors.initials: SY
authors.lastname: Lin
authors.affiliation: Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan. cyyeh@dragon.nchu.edu.tw.|Research Center for Sustainable Energy and Nanotechnology, National Chung Hsing University, Taichung 402, Taiwan. cyyeh@dragon.nchu.edu.tw.
authors.forename: Chen-Yu
authors.initials: CY
authors.lastname: Yeh
authors.affiliation: Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan. wujj@mail.ncku.edu.tw.
authors.forename: Jih-Jen
authors.initials: JJ
authors.lastname: Wu
mesh_terms: D004396:Coloring Agents / Q000737:chemistry; D011211:Electric Power Supplies; D004566:Electrodes; D015394:Molecular Structure; D011166:Porphyrins / Q000737:chemistry*; D012993:Solar Energy; D016082:Solar System / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D011166:Porphyrins; D015034:Zinc Oxide
keywords: ZnO anode; dye-sensitized solar cells; porphyrin dyes