Pascal Comte

Cette personne n’est plus à l’EPFL

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Publications associées (47)

Stable dye-sensitized solar cells based on organic chromophores and ionic liquid electrolyte

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Pascal Comte

A series of polyene-diphenylaniline based organic dyes (coded as D5, D7, D9 and D11) have been reported for the application in ionic liquid electrolyte based dye-sensitized solar cells. The effects of substitution of organic dyes on the photovoltaic perfor ...

2011

Effect of Sensitizer Adsorption Temperature on the Performance of Dye-Sensitized Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Jean-David Décoppet, Pascal Comte, Peng Wang

Employing a mesoscopic titania photoanode whose bilayer structure was judiciously selected to fit the optoelectronic characteristics of the Ru-based heteroleptic complex Na-cis-Ru(4,4'-(5-hexyltiophen-2-yl)-2,2'-bipyridine)(4-carboxylic-acid-4'-carboxylate ...

2011

Doping a TiO2 Photoanode with Nb5+ to Enhance Transparency and Charge Collection Efficiency in Dye-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Pascal Comte, Aravind Kumar Chandiran

The optoelectronic properties of our benchmark nanocrystalline anatase TiO2 photoanode were modified by means of aliovalent doping with Nb5+. Even for a low doping level, the charge collection efficiency can be noticeably improved as a result of a higher e ...

American Chemical Society2010

Dye-Sensitized Solar Cells Employing a Single Film of Mesoporous TiO2 Beads Achieve Power Conversion Efficiencies Over 10%

Michael Graetzel, Pascal Comte, Leo-Philipp Heiniger

Dye-sensitized solar cells employing mesoporous TiO2 beads have demonstrated longer electron diffusion lengths and extended electron lifetimes over Degussa P25 titania electrodes due to the well interconnected, densely packed nanocrystalline TiO2 particles ...

American Chemical Society2010

Application of Cu(II) and Zn(II) coproporphyrins as sensitizers for thin film dye sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Jacques-Edouard Moser, Mingkui Wang, Pascal Comte, Joël Teuscher, Davide Di Censo, Leila Alibabaei

We synthesized the Cu(II) and Zn(II) complexes of the 2,7,12,17-tetrapropionic acid of 3,8,13,18-tetramethyl-21H,23H porphyrin (coproporphyrin-I) and successfully employed them as sensitizers in dye-sensitized solar cells. Copper(II) coproporphyrin-I exhib ...

Royal Society of Chemistry2010

Hierarchical TiO2 Photoanode for Dye-Sensitized Solar Cells

Michael Graetzel, Pascal Comte

Hierarchical or one-dimensional architectures are among the most exciting developments in material science these recent years We present a nanostructured TiO2 assembly combining these two concepts and resembling a forest composed of individual, high aspect ...

American Chemical Society2010

Ultrafast charge transfer through p-oligo(phenylene) bridges: effect of nonequilibrium vibrations

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Jacques-Edouard Moser, Christophe Bauer, Pascal Comte, Joël Teuscher, Bernard Wenger, Serge Pelet

Electron transfers (ET) between a donor (D) and an acceptor (A) through a molecular bridge (B) are of great importance in biological systems, molecular electronics and molecular based light-energy conversion systems. Here, the back and the forward electron ...

Current Science Assoc // Indian Academy of Sciences2010

Regenerative PbS and CdS Quantum Dot Sensitized Solar Cells with a Cobalt Complex as Hole Mediator

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Kevin Sivula, Pascal Comte, Soo-Jin Moon, Takeru Bessho, Peter Chen

Metal sulfide (PbS and CdS) quantum dots (QDs) were prepared over mesoporous TiO2 films by improved successive ionic layer adsorption and reaction (SILAR) processes. The as-prepared QD-sensitized electrodes were combined with a cobalt complex redox couple ...

2009

Increased light harvesting in dye-sensitized solar cells with energy relay dyes

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jun Ho Yum, Pascal Comte

Conventional dye-sensitized solar cells have excellent charge collection efficiencies, high open-circuit voltages and good fill factors. However, dye-sensitized solar cells do not completely absorb all of the photons from the visible and near-infrared doma ...

Nature Publishing Group2009