Fine-tuning the electronic structure of organic dyes for dye-sensitized solar cells.

A series of metal-free organic dyes exploiting different combinations of (hetero)cyclic linkers (benzene, thiophene, and thiazole) and bridges (4H-cyclopenta[2,1-b:3,4-b']dithiophene (CPDT) and benzodithiophene (BDT)) as the central π-spacers were synthesized and characterized. Among them, the sensitizer containing the thiophene and CPDT showed the most broad incident photon-to-current conversion efficiency spectra, resulting in a solar energy conversion efficiency (η) of 6.6%.

[1]  M. Liang,et al.  Organic dyes incorporating the benzo[1,2-b:4,5-b']dithiophene moiety for efficient dye-sensitized solar cells. , 2011, Organic letters.

[2]  Yihong Chen,et al.  A low-energy-gap organic dye for high-performance small-molecule organic solar cells. , 2011, Journal of the American Chemical Society.

[3]  W. Li,et al.  Donor-acceptor conjugated polymer based on naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole for high-performance polymer solar cells. , 2011, Journal of the American Chemical Society.

[4]  Yongfang Li,et al.  PBDTTTZ: A Broad Band Gap Conjugated Polymer with High Photovoltaic Performance in Polymer Solar Cells , 2011 .

[5]  Tsung-Wei Huang,et al.  Efficient organic DSSC sensitizers bearing an electron-deficient pyrimidine as an effective π-spacer , 2011 .

[6]  Wei You,et al.  Development of fluorinated benzothiadiazole as a structural unit for a polymer solar cell of 7 % efficiency. , 2011, Angewandte Chemie.

[7]  Wei You,et al.  Fluorine substituted conjugated polymer of medium band gap yields 7% efficiency in polymer-fullerene solar cells. , 2011, Journal of the American Chemical Society.

[8]  Peng Wang,et al.  An organic D-π-A dye for record efficiency solid-state sensitized heterojunction solar cells. , 2011, Nano letters.

[9]  Michael Grätzel,et al.  Highly efficient mesoscopic dye-sensitized solar cells based on donor-acceptor-substituted porphyrins. , 2010, Angewandte Chemie.

[10]  Gang Li,et al.  For the Bright Future—Bulk Heterojunction Polymer Solar Cells with Power Conversion Efficiency of 7.4% , 2010, Advanced materials.

[11]  Jingyuan Liu,et al.  Synchronously reduced surface states, charge recombination, and light absorption length for high-performance organic dye-sensitized solar cells. , 2010, The journal of physical chemistry. B.

[12]  Yang Yang,et al.  A polybenzo[1,2-b:4,5-b']dithiophene derivative with deep HOMO level and its application in high-performance polymer solar cells. , 2010, Angewandte Chemie.

[13]  Jianguo Mei,et al.  Synthesis of isoindigo-based oligothiophenes for molecular bulk heterojunction solar cells. , 2010, Organic letters.

[14]  Hsien-Hsin Chou,et al.  Organic dyes incorporating the dithieno[3,2-b:2',3'-d]thiophene moiety for efficient dye-sensitized solar cells. , 2010, Organic letters.

[15]  Yang Yang,et al.  Polymer solar cells with enhanced open-circuit voltage and efficiency , 2009 .

[16]  Gang Li,et al.  Synthesis of a low band gap polymer and its application in highly efficient polymer solar cells. , 2009, Journal of the American Chemical Society.

[17]  Michael Grätzel,et al.  Recent advances in sensitized mesoscopic solar cells. , 2009, Accounts of chemical research.

[18]  Jean Roncali,et al.  Molecular bulk heterojunctions: an emerging approach to organic solar cells. , 2009, Accounts of chemical research.

[19]  M. Fischer,et al.  Metal-free organic dyes for dye-sensitized solar cells: from structure: property relationships to design rules. , 2009, Angewandte Chemie.

[20]  Ke-Jian Jiang,et al.  Efficient structural modification of triphenylamine-based organic dyes for dye-sensitized solar cells , 2008 .

[21]  Feifei Gao,et al.  An organic sensitizer with a fused dithienothiophene unit for efficient and stable dye-sensitized solar cells. , 2008, Journal of the American Chemical Society.

[22]  A. Hagfeldt,et al.  Effect of Different Dye Baths and Dye-Structures on the Performance of Dye-Sensitized Solar Cells Based on Triphenylamine Dyes , 2008 .

[23]  M. Turbiez,et al.  High‐Mobility Ambipolar Near‐Infrared Light‐Emitting Polymer Field‐Effect Transistors , 2008 .

[24]  P. Frère,et al.  Molecular engineering of the internal charge transfer in thiophene-triphenylamine hybrid pi-conjugated systems. , 2007, The Journal of organic chemistry.

[25]  Yan Cui,et al.  Thiophene-Functionalized Coumarin Dye for Efficient Dye-Sensitized Solar Cells: Electron Lifetime Improved by Coadsorption of Deoxycholic Acid , 2007 .

[26]  Michael Grätzel,et al.  Effect of a coadsorbent on the performance of dye-sensitized TiO2 solar cells: shielding versus band-edge movement. , 2005, The journal of physical chemistry. B.

[27]  M. Turner,et al.  Synthetic routes to solution processable polycyclopentadithiophenes , 2003 .

[28]  J. Roncali.  Synthetic Principles for Bandgap Control in Linear pi-Conjugated Systems. , 1997, Chemical reviews.

[29]  Anders Hagfeldt,et al.  Light-Induced Redox Reactions in Nanocrystalline Systems , 1995 .

[30]  Mohammad Khaja Nazeeruddin,et al.  Conversion of light to electricity by cis-X2bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) charge-transfer sensitizers (X = Cl-, Br-, I-, CN-, and SCN-) on nanocrystalline titanium dioxide electrodes , 1993 .

[31]  J. Roncali.  Conjugated poly(thiophenes): synthesis, functionalization, and applications , 1992 .

[32]  M. Grätzel,et al.  A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films , 1991, Nature.