Synthesis of organic dyes with linkers between 9,9-dimethylfluorenyl terminal and α-cyanoacrylic acid anchor, effect of the linkers on Uv-Vis absorption spectra, and photovoltaic properties in dye-Sensitized solar cells

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Abstract

Six metal-free organic dyes having thiophene (1), benzene-thiophene (2), thiophene-benzene (3), thiophene-pyridine (4), thiophene-thiophene (5), and pyridine (6) linkers between 9,9-dimethylfluorenyl terminal group and α-cyano-acrylic acid anchor were synthesized. Among them, organic dye 5 showed the longest λmax value (424 nm) in UV-Vis absorption spectrum, better incident monochromatic photon-to-current conversion efficiency (IPCE), highest short circuit photocurrent density (JSC, 9.33 mA2/cm2), and highest overall conversion efficiency (η, 3.91%).

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Lee, M. W., Cha, S. B., Yang, S. J., Park, S. W., Kim, K., Park, N. G., & Lee, D. H. (2009). Synthesis of organic dyes with linkers between 9,9-dimethylfluorenyl terminal and α-cyanoacrylic acid anchor, effect of the linkers on Uv-Vis absorption spectra, and photovoltaic properties in dye-Sensitized solar cells. Bulletin of the Korean Chemical Society, 30(10), 2269–2279. https://doi.org/10.5012/bkcs.2009.30.10.2269

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