Role of the Bulky Aryloxy Group at the Non-Peripheral Position of Phthalocyanines for Dye Sensitized Solar Cells

Tejerina, LaraMartinez-Diaz, M. VictoriaNazeeruddin, Mohammad K.Graetzel, MichaelTorres, Tomas2016-09-102016-09-102016-09-10201710.1002/cplu.201600325https://infoscience.epfl.ch/handle/20.500.14299/129240WOS:000394182400011• To date β-aryloxy-substituted designs have led to the best results in phthalocyanine-sensitized solar cells (Pc-SCs) because of their low aggregation properties. By incorporating the bulky semiflexible 2,6-diphenylphenoxy group at three α-positions of the Pc, different regioisomers were sepd. by column chromatog. and their photovoltaic performance was thoroughly studied. Efficiencies in the range of 1.9-4.1 % were found, thus demonstrating the importance of the steric interaction between the substituents and the semiconductor surface, also in the case of bulky semiflexible substituents. It .near IR dyesphthalocyaninessolar cellssteric hindrancesubstituent effectsRole of the Bulky Aryloxy Group at the Non-Peripheral Position of Phthalocyanines for Dye Sensitized Solar Cellstext::journal::journal article::research article