کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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183596 | 459554 | 2015 | 8 صفحه PDF | دانلود رایگان |
Three new carbazole-based dyes (DB-CH, DTB-CH, DT-CH) have been synthesized. The dye structures were built from an aliphatic hexyl which served as an electron donor and barbituric acid, thiobarbituric acid and thiazolidine-2,4-dione moieties which served as acceptors. The photophysical and electrochemical properties of the dyes were investigated by UV spectroscopy and cyclic voltammetry (CV). The barbituric acid, thiobarbituric acid and thiazolidine-2,4-dione derivatives were found to affect both the molar extinction coefficients and λmax which was likely due to the extension of the π-conjugation structures of the dyes. In the best case, conversion efficiencies up to 2.16% under full sunlight irradiation were obtained for the DSSCs which incorporated these new dyes. Our study indicated that the inclusion of thiazolidine-2,4-dione as an electron acceptor in the dye structure can lead to an improvement in its photovoltaic performance.
Journal: Electrochimica Acta - Volume 186, 20 December 2015, Pages 504–511