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Free-base tetra-arylphthalocyanines for dye-sensitised nanostructured solar cell applications

VIVIANE ARANYOS

Department of Organic Chemistry, Uppsala University, Box 531, S-751 21 Uppsala, Sweden

Department of Physical Chemistry, Uppsala University, Box 532, S-751 21 Uppsala, Sweden

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JOHAN HJELM

Department of Physical Chemistry, Uppsala University, Box 532, S-751 21 Uppsala, Sweden

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ANDERS HAGFELDT

Department of Physical Chemistry, Uppsala University, Box 532, S-751 21 Uppsala, Sweden

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, and

HELENA GRENNBERG

Department of Organic Chemistry, Uppsala University, Box 531, S-751 21 Uppsala, Sweden

Corresponding author, Department of Organic Chemistry, Uppsala University, Box 531, S-751 21 Uppsala, Sweden.

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https://doi.org/10.1002/jpp.371Cited by:24 (Source: Crossref)

Abstract

Adsorption of phthalocyanines lacking conventional attaching substituents onto nanostructured TiO₂ electrodes has been studied, and some of the important factors for sensitisation have been identified. Tetra-dimethoxyphenyl phthalocyanine (2) and tetra-phenyl phthalocyanine (3), derived from 4-(2,5-dimethoxyphenyl)phthalonitrile and 4-phenylphthalonitrile, respectively, are shown to successfully sensitise nanostructured TiO₂ electrodes, with IPCE_max of 9 and 5% at λ = 650 nm. The dye-oxide systems have been characterised by UV-vis spectroscopy, cyclic voltammetry and photoelectrochemical methods, and the dye–surface interactions are discussed.

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