A planar copolymer for high efficiency polymer solar cells.

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/cm(2), 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 C(71)-butyric acid methyl ester (PC(71)BM) 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).

[1]  Bong-Gi Kim,et al.  Effective variables to control the fill factor of organic photovoltaic cells. , 2009, ACS applied materials & interfaces.

[2]  Gang Li,et al.  Highly efficient solar cell polymers developed via fine-tuning of structural and electronic properties. , 2009, Journal of the American Chemical Society.

[3]  Nelson E. Coates,et al.  Bulk heterojunction solar cells with internal quantum efficiency approaching 100 , 2009 .

[4]  Gang Li,et al.  Development of new semiconducting polymers for high performance solar cells. , 2009, Journal of the American Chemical Society.

[5]  O. Inganäs,et al.  High photovoltage achieved in low band gap polymer solar cells by adjusting energy levels of a polymer with the LUMOs of fullerene derivatives , 2008 .

[6]  Bumjoon J. Kim,et al.  The influence of poly(3-hexylthiophene) regioregularity on fullerene-composite solar cell performance. , 2008, Journal of the American Chemical Society.

[7]  Yang Yang,et al.  Synthesis, characterization, and photovoltaic properties of a low band gap polymer based on silole-containing polythiophenes and 2,1,3-benzothiadiazole. , 2008, Journal of the American Chemical Society.

[8]  T. Swager,et al.  Fluorescent Conjugated Polymers That Incorporate Substituted 2,1,3-Benzooxadiazole and 2,1,3-Benzothiadiazole Units , 2008 .

[9]  M. Urien,et al.  Effect of the regioregularity of poly(3-hexylthiophene) on the performances of organic photovoltaic devices , 2008 .

[10]  Jin Young Kim,et al.  Processing additives for improved efficiency from bulk heterojunction solar cells. , 2008, Journal of the American Chemical Society.

[11]  Junbiao Peng,et al.  High-performance polymer heterojunction solar cells of a polysilafluorene derivative , 2008 .

[12]  Ye Tao,et al.  Toward a rational design of poly(2,7-carbazole) derivatives for solar cells. , 2008, Journal of the American Chemical Society.

[13]  Mario Leclerc,et al.  A Low‐Bandgap Poly(2,7‐Carbazole) Derivative for Use in High‐Performance Solar Cells , 2007 .

[14]  A J Heeger,et al.  Efficiency enhancement in low-bandgap polymer solar cells by processing with alkane dithiols. , 2007, Nature materials.

[15]  Mats Andersson,et al.  Influence of Solvent Mixing on the Morphology and Performance of Solar Cells Based on Polyfluorene Copolymer/Fullerene Blends , 2006 .

[16]  Christoph J. Brabec,et al.  Design Rules for Donors in Bulk‐Heterojunction Solar Cells—Towards 10 % Energy‐Conversion Efficiency , 2006 .

[17]  Donal D. C. Bradley,et al.  A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene:fullerene solar cells , 2006 .

[18]  Zhishan Bo,et al.  Synthesis, Optical, and Electrochemical Properties of the High‐Molecular‐Weight Conjugated Polycarbazoles , 2005 .

[19]  David L. Carroll,et al.  High-efficiency photovoltaic devices based on annealed poly(3-hexylthiophene) and 1-(3-methoxycarbonyl)-propyl-1- phenyl-(6,6)C61 blends , 2005 .

[20]  F. Zhang,et al.  Polymer Solar Cells Based on a Low‐Bandgap Fluorene Copolymer and a Fullerene Derivative with Photocurrent Extended to 850 nm , 2005 .

[21]  Xiaoniu Yang,et al.  Nanoscale morphology of high-performance polymer solar cells. , 2005, Nano letters.

[22]  Donal D. C. Bradley,et al.  Device annealing effect in organic solar cells with blends of regioregular poly(3-hexylthiophene) and soluble fullerene , 2005 .

[23]  Paul A. van Hal,et al.  Efficient methano[70]fullerene/MDMO-PPV bulk heterojunction photovoltaic cells. , 2003, Angewandte Chemie.

[24]  Mats Andersson,et al.  High‐Performance Polymer Solar Cells of an Alternating Polyfluorene Copolymer and a Fullerene Derivative , 2003 .

[25]  Niyazi Serdar Sariciftci,et al.  Effects of Postproduction Treatment on Plastic Solar Cells , 2003 .

[26]  J. Fréchet,et al.  Polymer-fullerene composite solar cells. , 2008, Angewandte Chemie.