Thomas Moehl

Cette personne n’est plus à l’EPFL

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Publications associées (58)

Toward Higher Photovoltage: Effect of Blocking Layer on Cobalt Bipyridine Pyrazole Complexes as Redox Shuttle for Dye-Sensitized Solar Cells

Michael Graetzel, Jun Ho Yum, Thomas Moehl, Aravind Kumar Chandiran, Paul Gratia, Junghyun Yoon

Fluorine-doped tin-oxide (FTO) transparent conducting substrates, for use in cobalt bis(bipyridine pyrazole) complex based dye-sensitized solar cells (DSCs), were compared using the conventional TiCl4 treatment with conformal TiO2 blocking layers formed by ...

American Chemical Society2014

Molecular gelation of ionic liquid-sulfolane mixtures, a solid electrolyte for high performance dye-sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Jean-David Décoppet, Thomas Moehl

Cyclohexanecarboxylic acid-[4-(3-tetradecylureido)phenyl]amide is an efficient gelator to solidify ionic liquid electrolytes. In this paper we apply this low molecular weight gelator to solidify the newly prepared sulfolane based ionic liquid electrolyte. ...

Royal Society of Chemistry2014

4,9-Dihydro-4,4,9,9-tetrahexyl-s-indaceno[1,2-b:5,6-b ']dithiophene as a pi-Spacer of Donor-pi-Acceptor Dye and Its Photovoltaic Performance with Liquid and Solid-State Dye-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Jean-David Décoppet, Robin Humphry-Baker, Thomas Moehl, Soo-Jin Moon

A new D-pi-A organic dye, LC-5, containing 4,9-dihydro-4,4,9,9-tetrahexyl-s-indaceno[1,2-b:5,6-b']-dithiophene as a novel pi-conjugated spacer has been synthesized and tested as a sensitizer in dye-sensitized solar cells (DSC). Volatile and ionic liquid el ...

American Chemical Society2014

Acetylene-bridged dyes with high open circuit potential for dye-sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Pascal Comte, Thomas Moehl, Fabrizio Giordano, Aswani Yella, Yongjoo Kim, Chi-Lun Mai

A series of simple metal-free organic dyes MS1-MS3 have been designed and synthesized, and their optical, electrochemical, and photovoltaic properties were investigated. The molecular structures are based on a push-pull framework with a triphenylamine, nap ...

RSC Publishing2014

Passivation of ZnO Nanowire Guests and 3D Inverse Opal Host Photoanodes for Dye-Sensitized Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Nicolas Tétreault, Thomas Moehl, Aravind Kumar Chandiran, Hauke Arne Harms, Philippe Pierre Labouchère

A hierarchical host-guest nanostructured photoanode is reported for dye-sensitized solar cells. It is composed of ZnO nanowires grown in situ into the macropores of a 3D ZnO inverse opal structure, which acts both as a seed layer and as a conductive backbo ...

Wiley-VCH Verlag Berlin2014

Thiadiazolo[3,4-c]pyridine Acceptor Based Blue Sensitizers for High Efficiency Dye-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Carole Graetzel, Robin Humphry-Baker, Pascal Comte, Thomas Moehl, Chenyi Yi, Joël Teuscher, Jiabao Yang

Two new [1,2,5]thiadiazolo[3,4-c]pyridine-containing D-A-pi-A organic dyes (PT-1 and PT-2) have been designed and synthesized for utilization in dye-sensitized solar cells. PT-2 sensitizer, which was synthesized by incorporating the 4,4-bis(2-ethylhexyl)-4 ...

American Chemical Society2014

Dye Regeneration Dynamics by Electron Donors on Mesoscopic TiO2 Films

Michael Graetzel, Shaik Mohammed Zakeeruddin, Thomas Moehl

The influence of different redox mediators and electrolyte constituents on charge transfer processes in dye-sensitized solar cells (DSC) was studied by contactless transient photoconductance (TPC) measurements. Device subsets without FTO (Fluorine-doped ti ...

American Chemical Society2014

Unravelling the mechanism of photoinduced charge transfer processes in lead iodide perovskite solar cells

Michael Graetzel, Jacques-Edouard Moser, Arianna Marchioro, Thomas Moehl, Joël Teuscher

Lead halide perovskites have recently been used as light absorbers in hybrid organic–inorganic solid-state solar cells, with efficiencies as high as 15% and open-circuit voltages of 1 V. However, a detailed explanation of the mechanisms of operation within ...

Nature Publishing Group2014

Effects of ZnO film growth route and nanostructure on electron transport and recombination in dye-sensitized solar cells

Michael Graetzel, Thomas Moehl

The photovoltaic performances of ZnO-based dye-sensitized solar cells (DSSCs) have been studied for ZnO porous films prepared by different techniques. A comparison is made between nanoparticle (NP) films prepared by a sol-gel method and two different elect ...

Royal Society of Chemistry2013

Blue-Coloured Highly Efficient Dye-Sensitized Solar Cells by Implementing the Diketopyrrolopyrrole Chromophore

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jun Ho Yum, Thomas Moehl, Joël Teuscher, Kasparas Rakstys, Thomas Wesley Holcombe, Yongjoo Kim

The paradigm shift in dye sensitized solar cells (DSCs) - towards donor-pi bridge-acceptor (D-pi-A) dyes - increases the performances of DSCs and challenges established design principles. Framed by this shifting landscape, a series of four diketopyrrolopyr ...

Nature Publishing Group2013

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Toward Higher Photovoltage: Effect of Blocking Layer on Cobalt Bipyridine Pyrazole Complexes as Redox Shuttle for Dye-Sensitized Solar Cells

Michael Graetzel, Jun Ho Yum, Thomas Moehl, Aravind Kumar Chandiran, Paul Gratia, Junghyun Yoon

American Chemical Society2014

Molecular gelation of ionic liquid-sulfolane mixtures, a solid electrolyte for high performance dye-sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Jean-David Décoppet, Thomas Moehl

Royal Society of Chemistry2014

4,9-Dihydro-4,4,9,9-tetrahexyl-s-indaceno[1,2-b:5,6-b ']dithiophene as a pi-Spacer of Donor-pi-Acceptor Dye and Its Photovoltaic Performance with Liquid and Solid-State Dye-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Jean-David Décoppet, Robin Humphry-Baker, Thomas Moehl, Soo-Jin Moon

American Chemical Society2014