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  • Title: Influence of structural variations in push-pull zinc porphyrins on photovoltaic performance of dye-sensitized solar cells.
    Author: Yi C, Giordano F, Cevey-Ha NL, Tsao HN, Zakeeruddin SM, Grätzel M.
    Journal: ChemSusChem; 2014 Apr; 7(4):1107-13. PubMed ID: 24616370.
    Abstract:
    We designed and synthesized two new zinc porphyrin dyes for dye-sensitized solar cells (DSCs). Subtle molecular structural variation in the dyes significantly influenced the performance of the DSC devices. By utilizing these dyes in combination with a cobalt-based redox electrolyte using a photoanode made of mesoporous TiO2 , we achieved a power conversion efficiency (PCE) of up to 12.0 % under AM 1.5 G (100 mW cm(-2)) simulated solar light. Moreover, we obtained a high PCE of 6.4 % for solid-state dye-sensitized solar cells by using 2,2',7,7'-tetrakis-(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene as a hole-transporting material.
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