Highly efficient light-harvesting ruthenium sensitizer for thin-film dye-sensitized solar cells.

A high molar extinction coefficient heteroleptic ruthenium complex, incorporating an electron-rich hexylthio-terminal chain, has been synthesized and demonstrated as an efficient sensitizer for dye-sensitized solar cells. With this new sensitizer excellent power conversion efficiency is 11.5% and 4.7% obtained under an irradiation of full sunlight (air mass 1.5 global) in combination with a volatility electrolyte and solid state hole transporting material, respectively. The devices with low volatility electrolyte showed good stability under visible-light soaking at 60 degrees C during 1000 h of accelerated tests.

[1]  Chongchan Lee,et al.  Oligophenylenevinylene-Functionalized Ru(II)-bipyridine Sensitizers for Efficient Dye-Sensitized Nanocrystalline TiO2 Solar Cells , 2006 .

[2]  Peng Wang,et al.  High‐Performance Liquid and Solid Dye‐Sensitized Solar Cells Based on a Novel Metal‐Free Organic Sensitizer , 2008 .

[3]  Peng Wang,et al.  A high molar extinction coefficient sensitizer for stable dye-sensitized solar cells. , 2005, Journal of the American Chemical Society.

[4]  Claudia Barolo,et al.  Design, synthesis, and application of amphiphilic ruthenium polypyridyl photosensitizers in solar cells based on nanocrystalline TiO2 films , 2002 .

[5]  Krystina C. Ho,et al.  New Ruthenium Complexes Containing Oligoalkylthiophene‐Substituted 1,10‐Phenanthroline for Nanocrystalline Dye‐Sensitized Solar Cells , 2007 .

[6]  Yuan Wang,et al.  New Efficiency Records for Stable Dye-Sensitized Solar Cells with Low-Volatility and Ionic Liquid Electrolytes , 2008 .

[7]  M. Grätzel,et al.  Phenomenally high molar extinction coefficient sensitizer with "donor-acceptor" ligands for dye-sensitized solar cell applications. , 2008, Inorganic chemistry.

[8]  Peng Wang,et al.  A stable quasi-solid-state dye-sensitized solar cell with an amphiphilic ruthenium sensitizer and polymer gel electrolyte , 2003, Nature materials.

[9]  M. Grätzel,et al.  Molecular engineering of hybrid sensitizers incorporating an organic antenna into ruthenium complex and their application in solar cells , 2008 .

[10]  Ke-Jian Jiang,et al.  A novel ruthenium sensitizer with a hydrophobic 2-thiophen-2-yl-vinyl-conjugated bipyridyl ligand for effective dye sensitized TiO2 solar cells. , 2006, Chemical communications.

[11]  Yuan Wang,et al.  Enhance the optical absorptivity of nanocrystalline TiO2 film with high molar extinction coefficient ruthenium sensitizers for high performance dye-sensitized solar cells. , 2008, Journal of the American Chemical Society.

[12]  Claudia Barolo,et al.  Electron-rich heteroaromatic conjugated bipyridine based ruthenium sensitizer for efficient dye-sensitized solar cells. , 2008, Chemical communications.

[13]  M. Grätzel,et al.  Passivation of nanocrystalline TiO2 junctions by surface adsorbed phosphinate amphiphiles enhances the photovoltaic performance of dye sensitized solar cells. , 2009, Dalton transactions.

[14]  Michael Grätzel,et al.  Efficiency improvement in solid-state-dye-sensitized photovoltaics with an amphiphilic Ruthenium-dye , 2005 .

[15]  Kuo-Chuan Ho,et al.  Multifunctionalized ruthenium-based supersensitizers for highly efficient dye-sensitized solar cells. , 2008, Angewandte Chemie.

[16]  S. Zakeeruddin,et al.  High‐Efficiency and Stable Mesoscopic Dye‐Sensitized Solar Cells Based on a High Molar Extinction Coefficient Ruthenium Sensitizer and Nonvolatile Electrolyte , 2007 .

[17]  Peng Wang,et al.  Dye-Sensitized Solar Cells with a High Absorptivity Ruthenium Sensitizer Featuring a 2-(Hexylthio)thiophene Conjugated Bipyridine , 2009 .

[18]  M. Grätzel,et al.  Surface Design in Solid‐State Dye Sensitized Solar Cells: Effects of Zwitterionic Co‐adsorbents on Photovoltaic Performance , 2009 .

[19]  Josef Salbeck,et al.  Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies , 1998, Nature.

[20]  Guido Viscardi,et al.  Combined experimental and DFT-TDDFT computational study of photoelectrochemical cell ruthenium sensitizers. , 2005, Journal of the American Chemical Society.

[21]  Mohammad Khaja Nazeeruddin,et al.  High Molar Extinction Coefficient Ruthenium Sensitizers for Thin Film Dye-Sensitized Solar Cells , 2009 .

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

[23]  Michael Grätzel,et al.  Investigation of Sensitizer Adsorption and the Influence of Protons on Current and Voltage of a Dye-Sensitized Nanocrystalline TiO2 Solar Cell , 2003 .

[24]  M. Grätzel,et al.  The influence of charge transport and recombination on the performance of dye-sensitized solar cells. , 2009, Chemphyschem : a European journal of chemical physics and physical chemistry.

[25]  Klaus Meerholz,et al.  Efficiency enhancements in solid-state hybrid solar cells via reduced charge recombination and increased light capture. , 2007, Nano letters.

[26]  H. Gerischer.  Neglected problems in the pH dependence of the flatband potential of semiconducting oxides and semiconductors covered with oxide layers , 1989 .

[27]  Kuo-Chuan Ho,et al.  A ruthenium complex with superhigh light-harvesting capacity for dye-sensitized solar cells. , 2006, Angewandte Chemie.

[28]  K. Ho,et al.  A New Route to Enhance the Light‐Harvesting Capability of Ruthenium Complexes for Dye‐Sensitized Solar Cells , 2007 .

[29]  Peng Wang,et al.  Stable New Sensitizer with Improved Light Harvesting for Nanocrystalline Dye‐Sensitized Solar Cells , 2004 .

[30]  J. Durrant,et al.  A new ruthenium polypyridyl dye, TG6, whose performance in dye-sensitized solar cells is surprisingly close to that of N719, the ‘dye to beat’ for 17 years , 2008 .

[31]  Michael Grätzel,et al.  Photoelectrochemical cells , 2001, Nature.

[32]  Feifei Gao,et al.  A new heteroleptic ruthenium sensitizer enhances the absorptivity of mesoporous titania film for a high efficiency dye-sensitized solar cell. , 2008, Chemical communications.