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Title
A Planar Copolymer for High Efficiency Polymer Solar Cells
Article in journal
Authors
Ruiping Qin, Weiwei Li, Cuihong Li, Chun Du, Clemens Veit, Hans-Frieder Schleiermacher, Mattias Andersson, Zhishan Bo, Zhengping Liu, Olle Inganäs, Uli Wuerfel, Fengling Zhang
Publication Year
2009
Source
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, (131)41, 14612
Link to Source (DOI)
10.1021/ja9057986
Abstract
<p>An alternating copolymer, poly(2-(5-(5,6-bis(octyloxy)-4-(thiophen-2-yl)benzo[c][1,2,5]thiadiazol-7-yl)thiophen-2-yl)-9-octyt-9H-carbazole) (HXS-1), was designed, synthesized, and used as the donor material for high efficiency polymer solar cells. The close packing of the polymer chains in the solid state was confirmed by XRD. A J(sc) of 9.6 mA/cm(2), a V-proportional to of 0.81 V, an FF of 0.69, and a PCE of 5.4% were achieved with HXS-1 and [6,6]-phenyl C-71-butyric acid methyl ester (PC71BM) as a bulk heterojunction active layer spin-coated from a solvent mixture of 1,2-dichlorobenzene and 1,8-diodooctane (97.5:2.5) under air mass 1.5 global (AM 1.5 G) irradiation of 100 mW/cm(2).</p>