کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5216163 | 1383254 | 2014 | 9 صفحه PDF | دانلود رایگان |
A series of new organic dyes containing an electron-deficient diphenylquinoxaline moiety was synthesized and employed as the photosensitizers in dye-sensitized solar cells (DSSCs). The multiple phenyl rings in the peripheral positions of the dye structure provide a hydrophobic barrier to slow down the charge recombination. The photophysical and electrochemical properties of these dyes were investigated in detail. The cell performance and the associated photophysical and electrochemical properties can be easily tuned by the modification of the aromatic fragments within the Ï spacer. Dye CR204-based DSSC reached the best energy conversion efficiency of 6.49% with an open-circuit voltage of 666Â mV, a short-circuit photocurrent density of 14.9Â mAÂ cmâ2, and a fill factor of 0.66. The IPCE of CR204-based DSSC covers the light-harvesting to NIR region.
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Journal: Tetrahedron - Volume 70, Issue 36, 9 September 2014, Pages 6276-6284