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Thomas Moehl

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Related publications (58)

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A New Heteroleptic Ruthenium Sensitizer for Transparent Dye-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Thomas Moehl, Nuttapol Pootrakulchote

A new heteroleptic ruthenium complex, coded CYC-B19, incorporating an ancillary ligand endowed with hexylthio-bithiophene segments and a conjugated anchoring ligand with vinyl groups was prepared. This new sensitizer exhibits a lower energy MLCT band centr ...

Wiley-VCH Verlag Berlin2012

Electron Kinetics in Dye Sensitized Solar Cells Employing Anatase with (101) and (001) Facets

Michael Graetzel, Mohammad Khaja Nazeeruddin, Pascal Comte, Ladislav Kavan, Thomas Moehl, Aswani Yella

Two phase-pure nanocrystalline anatase materials differing in the exposed crystal facets (001) or (101) are studied by electrochemical impedance spectroscopy and by transient photovoltage and photocurrent decay in dye sensitized solar cells. A larger chemi ...

Elsevier2015

Efficient and selective carbon dioxide reduction on low cost protected Cu2O photocathodes using a molecular catalyst

Michael Graetzel, Mohammad Khaja Nazeeruddin, Peng Gao, Thomas Moehl, Jingshan Luo, Peng Gao, Matthew Thomas Mayer, Marcel Roland Schreier, Stanley David Tilley

Photoelectrochemical reduction of CO2 to CO was driven by a TiO2-protected Cu2O photocathode paired with a rhenium bipyridyl catalyst. Efficient and selective CO evolution was shown to be stable over several hours. The use of protic solution additives to o ...

Royal Soc Chemistry2015

Nanowire Perovskite Solar Cell

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Peng Gao, Thomas Moehl, Jingshan Luo, Peng Gao, Norman Pellet, Marius Franckevicius, Jeong-Hyeok Im

Organolead iodide perovskite, CH3NH3PbI3, was prepared in the form of nanowire by means of a small quantity of aprotic solvent in two-step spin-coating procedure. One-dimensional nanowire perovskite with the mean diameter of 100 nm showed faster carrier se ...

American Chemical Society2015

Light Energy Conversion by Mesoscopic PbS Quantum Dots/TiO2 Heterojunction Solar Cells

Michael Graetzel, Thomas Moehl, Lioz Etgar

Solid state PbS quantum dots (QDs)/TiO2 heterojunction solar cells were produced by depositing PbS QDs on a 500 nm thick mesoscopic TiO2 films using layer-by-layer deposition. Importantly, the PbS QDs act here as photosensitizers and at the same time as ho ...

American Chemical Society2012

Porphyrin Sensitizers Bearing a Pyridine-Type Anchoring Group for Dye-Sensitized Solar Cells

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

Three novel efficient donor-acceptor porphyrins, MH1-MH3, with a pyridine-type acceptor and anchoring group were synthesized and their optical, electrochemical, and photovoltaic properties investigated. Replacing the commonly used 4-carboxyphenyl anchoring ...

Amer Chemical Soc2015

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, Kasparas Rakstys, Joël Teuscher, Thomas Wesley Holcombe

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

Stable and Efficient Perovskite Solar Cells Based on Titania Nanotube Arrays

Michael Graetzel, Mohammad Khaja Nazeeruddin, Peng Gao, Mohammad Ibrahim Dar, Thomas Moehl, Peng Gao, Neha Arora, Peng Qin

Highly ordered 1D TiO2 nanotube arrays are fabricated and applied as nanocontainers and electron transporting material in CH3NH3PbI3 perovskite solar cells. The optimized device shows a power conversion efficiency of 14.8%, and improved stability under an ...

Wiley-V C H Verlag Gmbh2015

Revealing and Accelerating Slow Electron Transport in Amorphous Molybdenum Sulphide Particles for Hydrogen Evolution Reaction

Michael Graetzel, Xile Hu, Thomas Moehl, Heron Vrubel

Electrochemical impedance spectroscopy is used to identify a slow electron transport process in hydrogen evolution catalysed by amorphous molybdenum sulphides on glassy carbon. A new chemical synthesis leads to an amorphous molybdenum sulfide catalyst with ...

Royal Society of Chemistry2013

High-Efficiency Solid-State Dye-Sensitized Solar Cells: Fast Charge Extraction through Self-Assembled 3D Fibrous Network of Crystalline TiO2 Nanowires

Michael Graetzel, Shaik Mohammed Zakeeruddin, László Forró, Arnaud Magrez, Endre Horvath, Nicolas Tétreault, Peng Wang, Thomas Moehl, Rita Smajda, Laurent Gabriel Félix Alexandre Stéphane Bungener, Jérémie Minh-Châu Brillet

Herein, we present a novel morphology for solid-state dye-sensitized solar cells based on the simple and straightforward self-assembly of nanorods into a 3D fibrous network of fused single-crystalline anatase nanowires. This architecture offers a high roug ...

American Chemical Society2010

Effect of Interfacial Engineering in Solid-State Nanostructured Sb2S3 Heterojunction Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Thomas Moehl, Lioz Etgar

Wiley-VCH Verlag Berlin2013

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

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

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

A durable SWCNT/PET polymer foil based metal free counter electrode for flexible dye-sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Thomas Moehl, Aswani Yella, Fabrizio Giordano, Jean-David Décoppet

An ITO free, highly conductive PET foil is fabricated by depositing aqueous single-walled carbon nanotube (SWCNT) ink that exhibits remarkable durability when exposed to severe mechanical stability tests. Excellent adhesion of the SWCNT film on PET was obt ...

Royal Society of Chemistry2014

Yttrium-substituted nanocrystalline TiO2 photoanodes for perovskite based heterojunction solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Peng Gao, Mohammad Ibrahim Dar, Thomas Moehl, Peng Gao, Aravind Kumar Chandiran, Nicolas Tétreault, Peng Qin

We report the use of Y3+-substituted TiO2 (0.5% Y-TiO2) in solid-state mesoscopic solar cells, consisting of CH3NH3PbI3 as the light harvester and spiro-OMeTAD as the hole transport material. A power conversion efficiency of 11.2% under simulated AM 1.5 fu ...

Royal Society of Chemistry2014

Photodetector

Mohammad Khaja Nazeeruddin, Thomas Moehl, Konrad Domanski, Jeong-Hyeok Im

The present invention concerns a device for room temperature reverse-bias operation photo-detection. The device comprising: - a planar first electrode extending in a planar direction; - a second electrode positioned above the first electrode in a direction ...

2016

Loading of mesoporous titania films by CH3NH3PbI3 perovskite, single step vs. sequential deposition

Michael Graetzel, Thomas Moehl, Carole Graetzel, Jeannette Medina Kadro

Infiltration of mesoporous TiO2 scaffolds by CH3NH3PbI3 is more complete when using sequential compared to single step deposition processing and avoids formation of disordered capping layers affording greatly improved performance of perovskite based photov ...

Royal Society of Chemistry2015

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

Michael Graetzel, Mohammad Khaja Nazeeruddin, Thomas Moehl, Aravind Kumar Chandiran, Nicolas Tétreault, 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