New organic sensitizers using 4-(cyanomethyl)benzoic acid as an acceptor group for dye-sensitized solar cell applications
作者： Akhil Gupta , Vanessa Armel , Wanchun Xiang , Ante Bilic , Richard A. Evans
DOI: 10.1016/J.DYEPIG.2014.08.023
关键词: Short circuit 、 Titanium dioxide 、 Photocurrent 、 Photochemistry 、 Dye-sensitized solar cell 、 Thiophene 、 Phenyl group 、 Benzoic acid 、 Chemistry 、 Acceptor
摘要: Abstract Two design elements for donor-acceptor organic dyes used in dye-sensitized solar cells (DSSCs) are presented. 4-(Cyanomethyl)benzoic acid was as an acceptor group and compared to the commonly cyanoacrylic a pair of otherwise structurally equivalent sensitizers. The 4-(cyanomethyl)benzoic based showed significantly improved photovoltaic performance when tested DSSCs. Furthermore, it shown that replacement bridging para -phenyl with thiophene triarylamino-oligothiophene-based sensitizers resulted significant spectral red-shift device DSSCs were constructed using sensitizer embodying both features show increase electron lifetime fabricated conventional sensitizer. most promising novel incorporating displayed power conversion efficiency 6.37%, short circuit photocurrent density 11.63 mA cm −2 , open-circuit voltage 0.754 V fill factor 0.73.
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