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- W2041923449 abstract "ABSTRACT Two new metal free sensitizers based on triphenylamine-benzothiadiazole were synthesized and used in dye sensitized solar cells (DSSCs). Electrochemical and optical properties of the dyes were studied by cyclic voltammetry, UV-vis absorption and fluorescence spectroscopy. A red shift was observed by the attachment of a thiophene (MZ-259) instead of a phenylene (MZ-255) bridge. The reverse effect was observed in the electrochemical properties because of the more electron-donating thiophene incorporated into the cyanoacrylic acid as an anchoring-acceptor unit in this system resulted in a higher LUMO level. The charge distribution of the dyes was also proved by DFT calculations using the Spartan10 program with the parameters of B3LYP and 6-31G** basis set. Finally the photovoltaic performances were investigated under standard AM 1.5 illumination with a power of 100 mW/cm2 using an ionic liquid based electrolyte. The power conversion efficiencies, η, were increased from 3.16% to 3.81% by using thiophene instead of phenylene as a π-bridge unit." @default.
- W2041923449 created "2016-06-24" @default.
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- W2041923449 date "2014-11-01" @default.
- W2041923449 modified "2023-10-17" @default.
- W2041923449 title "Effect of a pi-bridging unit in triphenylamine-benzothiadiazole based donor acceptor chromophores for dye-sensitized solar cells" @default.
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- W2041923449 doi "https://doi.org/10.1016/j.electacta.2014.09.138" @default.
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