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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 10
BKCSDE 30(10)
October 20, 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
Min Woo Lee, Su Bong Cha, Su Jin Yang, Se Woong Park, Kyungkon Kim, Nam Gyu Park*, Duck Hyung Lee*
9,9-Dimethylfluorenyl terminal, α-Cyanoacrylic acid anchor, Thiophene linker, Organic dye, Dye-sensitized solar cells
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-cyanoacrylic 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%).
2269 - 2279
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