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Open AccessFeature PaperArticle

Effect of the Number of Anchoring and Electron-Donating Groups on the Efficiency of Free-Base- and Zn-Porphyrin-Sensitized Solar Cells

1
Área de Química Orgánica, Instituto de Bioingeniería, Universidad Miguel Hernández, Avda. de la Universidad s/n, 03203 Elche, Spain
2
Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
*
Author to whom correspondence should be addressed.
Materials 2019, 12(4), 650; https://doi.org/10.3390/ma12040650
Received: 29 December 2018 / Revised: 1 February 2019 / Accepted: 15 February 2019 / Published: 21 February 2019
(This article belongs to the Special Issue From Macromolecules to Materials for Optoelectronic Devices)
A series of porphyrin compounds, free base (H2P) and their Zn (II) metallated analogues (ZnP), bearing one, two or three carboxylic acid groups, have been synthesized, characterized, and used as sensitizers in dye sensitized solar cells (DSSCs). The performance of these devices has been analyzed, showing higher efficiencies of those sensitized with ZnP compounds. These results have been explained, on one hand, taking into account the electronic character of the metal ion, which acts as mediator in the injection step, and, on the other, considering the number of anchoring groups, which determines both the stereoelectronic character of the dye and the way it binds to TiO2 surface. View Full-Text
Keywords: porphyrins; DSSC; multiple anchoring group; electron donating groups porphyrins; DSSC; multiple anchoring group; electron donating groups
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MDPI and ACS Style

Nasrollahi, R.; Martín-Gomis, L.; Fernández-Lázaro, F.; Zakavi, S.; Sastre-Santos, Á. Effect of the Number of Anchoring and Electron-Donating Groups on the Efficiency of Free-Base- and Zn-Porphyrin-Sensitized Solar Cells. Materials 2019, 12, 650.

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