Journal ArticleDOI
Efficient photosensitization of nanocrystalline TiO2 films by a new class of sensitizer: cis-dithiocyanato bis(4,7-dicarboxy-1,10-phenanthroline)ruthenium(II)
Hideki Sugihara,Lok Pratap Singh,Kazuhiro Sayama,Hironori Arakawa,Md. K. Nazeeruddin,Michael Grätzel +5 more
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TLDR
In this article, a new class of ruthenium(II) complexes containing carboxylated 1,10-phenanthroline were synthesized, and the overall solar-to-electric power conversion efficincy was obtained at AM-1.5 (100 mW/cm2).Abstract:
A new class of ruthenium(II) complexes containing carboxylated 1,10-phenanthroline were synthesized. Photosensitization of nanocrystalline TiO2 electrode by bis(tetrabutylammonium)dihydronium cis-dithiocyanato bis(4,7-dicarboxy-1,10-phenanthroline)ruthenium(II) showed a high incident photon-to-current conversion efficiency (IPCE: 70% at 540 nm). The overall solar-to-electric power conversion efficincy of 6.1% was obtained at AM-1.5 (100 mW/cm2).read more
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Dye-Sensitized Solar Cells
TL;DR: Dye-sensitized solar cells (DSCs) offer the possibilities to design solar cells with a large flexibility in shape, color, and transparency as mentioned in this paper, and many DSC research groups have been established around the world.
Journal ArticleDOI
Engineering of Efficient Panchromatic Sensitizers for Nanocrystalline TiO2-Based Solar Cells
Mohammad Khaja Nazeeruddin,Peter Pechy,Thierry Renouard,Shaik M. Zakeeruddin,Robin Humphry-Baker,Pascal Comte,Paul Liska,Le Cevey,E Costa,Valery Shklover,Leone Spiccia,Glen B. Deacon,Carlo Alberto Bignozzi,Michael Grätzel +13 more
TL;DR: The black dye, when anchored to nanocrystalline TiO(2) films achieves very efficient sensitization over the whole visible range extending into the near-IR region up to 920 nm, yielding over 80% incident photon-to-current efficiencies (IPCE).
Journal ArticleDOI
Catalysis Research of Relevance to Carbon Management: Progress, Challenges, and Opportunities
Hironori Arakawa,Michele Aresta,John Nelson Armor,Mark A. Barteau,Eric J. Beckman,Alexis T. Bell,John E. Bercaw,Carol Creutz,Eckhard Dinjus,David A. Dixon,Kazunari Domen,Daniel L. DuBois,Juergen Eckert,Etsuko Fujita,Dorothy H. Gibson,William A. Goddard,D. Wayne Goodman,Jay O. Keller,Gregory J. Kubas,Harold H. Kung,James E. Lyons,Leo Ernest Manzer,Tobin J. Marks,Keiji Morokuma,Kenneth M. Nicholas,Roy A. Periana,Lawrence Que,Jens Rostrup-Nielson,Wolfgang M.H. Sachtler,Lanny D. Schmidt,Ayusman Sen,Gabor A. Somorjai,Peter C. Stair,B. Ray Stults,William Tumas +34 more
TL;DR: The goal of the "Opportunities for Catalysis Research in Carbon Management" workshop was to review within the context of greenhouse gas/carbon issues the current state of knowledge, barriers to further scientific and technological progress, and basic scientific research needs in the areas of H2 generation and utilization.
Journal ArticleDOI
A Ruthenium Complex with Superhigh Light‐Harvesting Capacity for Dye‐Sensitized Solar Cells
TL;DR: A new ruthenium photosensitizer CYC-B1 is reported in which one of the dcbpy ligands in N3 was replaced with abtpy, a bipyridine ligand substituted with alkyl bithiophene groups and its power-conversion efficiency is 10% higher than that of N3 under the same cell fabrication and measuring procedures carried out in the laboratory.
Journal ArticleDOI
Dye sensitization of nanocrystalline titanium dioxide with square planar platinum(II) diimine dithiolate complexes.
Ashraful Islam,Hideki Sugihara,Kohjiro Hara,Lok Pratap Singh,Ryuzi Katoh,Masatoshi Yanagida,Yoshiaki Takahashi,and Shigeo Murata,Hironori Arakawa,Gaku Fujihashi +9 more
TL;DR: The visible spectra of the 3,4-toluenedithiol-based sensitizers showed an enhanced red response, but the lower photocurrent efficiency observed for these sensitizer stems in part from a sluggish halide oxidation rate and a fast recombination of injected electrons with the oxidized dye.
References
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Journal ArticleDOI
A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films
TL;DR: In this article, the authors describe a photovoltaic cell, created from low-to medium-purity materials through low-cost processes, which exhibits a commercially realistic energy-conversion efficiency.
Journal ArticleDOI
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
Mohammad Khaja Nazeeruddin,Andreas Kay,I. Rodicio,Robin Humphry-Baker,E. Mueller,Paul Liska,Nick Vlachopoulos,Michael Graetzel +7 more
TL;DR: Cis-X 2 Bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) complexes were prepared and characterized with respct to their absorption, luminescence, and redox behavior.
Journal ArticleDOI
Artificial photosynthesis. 1. Photosensitization of titania solar cells with chlorophyll derivatives and related natural porphyrins
Andreas Kay,Michael Graetzel +1 more
TL;DR: In this article, Colloidal TiO[sub 2] electrodes were photosensitized with derivatives of chlorophyll and related natural porphyrins resulting in light harvesting and charge separation efficiencies comparable to those in natural photosynthesis.
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Dye Sensitization of Nanocrystalline Tin Oxide by Perylene Derivatives
TL;DR: In this paper, a new sensitizing dye−semiconductor system comprised of perylene derivatives on SnO2 has been characterized and shown to yield a short circuit photocurrent density of 3.26 mA/cm2, a photovoltage of −0.45 V, and overall cell efficiency of 0.89% at one sun light intensity.
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Synthesis of some 2,9‐disubstituted‐1,10‐phenanthrolines
TL;DR: A series of symmetrically disubstituted compounds, with substituents linked to the ring through a carbon atom, has been prepared from 2,9-dimethyl-1,10-phenanthroline as discussed by the authors.