Organic Letters 2011-08-05

Novel quinoxaline-based organic sensitizers for dye-sensitized solar cells.

Dong Wook Chang, Hyo Joong Lee, Jong H Kim, Soo Young Park, Su-Moon Park, Liming Dai, Jong-Beom Baek

Index: Org. Lett. 13(15) , 3880-3, (2011)

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Abstract

Novel quinoxaline-based organic sensitizers using vertical (RC-21) and horizontal (RC-22) conjugation between an electron-donating triphenylamine unit and electron-accepting quinoxaline unit have been synthesized and used for dye-sensitized solar cells (DSSCs), leading to the relatively high power conversion efficiencies of 3.30 and 5.56% for RC-21 and RC-22, respectively. This result indicates that the quinoxaline electron-accepting unit is quite a promising candidate in organic sensitizers.© 2011 American Chemical Society