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

✍ Scribed by Viviane Aranyos; Johan Hjelm; Anders Hagfeldt; Helena Grennberg

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 145 KB
• Volume: 05
• Category: Article
• ISSN: 1088-4246
• DOI: 10.1002/jpp.371

✦ Synopsis

Adsorption of phthalocyanines lacking conventional attaching substituents onto nanostructured TiO ~2~ 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 TiO ~2~ 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.