Journal of the American Chemical Society 2009-01-14

Development of new semiconducting polymers for high performance solar cells.

Yongye Liang, Yue Wu, Danqin Feng, Szu-Ting Tsai, Hae-Jung Son, Gang Li, Luping Yu

Index: J. Am. Chem. Soc. 1st ed., 131 , 56-57, (2009)

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Abstract

A new low band gap semiconducting polymer, PTB1, was synthesized and found promising for solar energy harvesting. Simple polymer solar cells based on PTB1 and methanofullerene [6,6]-phenyl-C(71)-butyric acid methyl esters (PC(71)BM) exhibit a solar conversion efficiency of 5.6%. An external quantum efficiency of 67% and fill-factor of 65% are achieved, both of which are among the highest values reported for a solar cell system based on a low band gap polymer.