A Planar Copolymer for High Efficiency Polymer Solar Cells

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• 作者：Ruiping Qin ; Weiwei Li ; Cuihong Li ; Chun Du ; Clemens Veit ; Hans-Frieder Schleiermacher ; Mattias Andersson ; Zhishan Bo ; Zhengping Liu ; Olle Ingans ; Uli Wuerfel ; Fengling Zhang
• 刊名：Journal of the American Chemical Society
• 出版年：2009
• 出版时间：October 21, 2009
• 年：2009
• 卷：131
• 期：41
• 页码：14612-14613
• 全文大小：115K
• 年卷期：v.131,no.41(October 21, 2009)
• ISSN：1520-5126

文摘

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-octyl-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/cm², a V_oc of 0.81 V, an FF of 0.69, and a PCE of 5.4% were achieved with HXS-1 and [6,6]-phenyl C₇₁-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/cm².