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Joël Teuscher

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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

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

Towards Compatibility between Ruthenium Sensitizers and Cobalt Electrolytes in Dye-Sensitized Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Ursula Röthlisberger, Jacques-Edouard Moser, Ivano Tavernelli, Peng Gao, Joël Teuscher, Basile Curchod, Aswani Yella

Wiley-Blackwell2013

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

Molecular Engineering of a Fluorene Donor for Dye-Sensitized Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Ursula Röthlisberger, Jacques-Edouard Moser, Ivano Tavernelli, Robin Humphry-Baker, Joël Teuscher, Basile Curchod, Aswani Yella, Negar Ashari Astani

To improve their efficiency beyond the state-of-the-art, D-pi-A dyes must display increased spectral breadth and account for the physical limitations observed in the dye. sensitized solar cells. In particular, they should be designed to control the electro ...

Amer Chemical Soc2013

Unravelling the Potential for Dithienopyrrole Sensitizers in Dye-Sensitized Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Ursula Röthlisberger, Jacques-Edouard Moser, Ivano Tavernelli, Robin Humphry-Baker, Peng Gao, Joël Teuscher, Basile Curchod, Aswani Yella

Two D−π−A dyes based on the dithieno[3,2-b:2′,3′-d]pyrrole π-bridge (DTP) were synthesized, characterized using UV−vis absorption spectroscopy and electrochemistry, modeled using quantum chemical calculations, and used as sensitizers in dye-sensitized sola ...

Amer Chemical Soc2013

Photoinduced Interfacial Electron Injection Dynamics in Dye-Sensitized Solar Cells under Photovoltaic Operating Conditions

Michael Graetzel, Shaik Mohammed Zakeeruddin, Jacques-Edouard Moser, Jean-David Décoppet, Joël Teuscher, Angela Punzi

We report a pump–probe spectroscopy study of electron injection rates in dye-sensitized solar cell (DSSC) devices. We examine the case of working devices employing an N719 ruthenium sensitizer and an iodide electrolyte. Electron injection is found to occur ...

Amer Chemical Soc2012

Significant Improvement of Dye-Sensitized Solar Cell Performance by Small Structural Modification in π-Conjugated Donor-Acceptor Dyes

Michael Graetzel, Shaik Mohammed Zakeeruddin, Jacques-Edouard Moser, Robin Humphry-Baker, Joël Teuscher, Magdalena Anna Marszalek, Mateusz Barnaba Wielopolski, Amaresh Mishra

Two donor-π-acceptor (D-π-A) dyes are synthesized for application in dye- sensitized solar cells (DSSC). These D-π-A sensitizers use triphenylamine as donor, oligothiophene as both donor and π-bridge, and benzothiadiazole (BTDA)/cyanoacrylic acid as accept ...

Wiley-Blackwell2012

Dynamics and mechanisms of interfacial photoinduced electron transfer processes of third generation photovoltaics and photocatalysis

Jacques-Edouard Moser, Arianna Marchioro, Christophe Bauer, Natalie Renuka Banerji, Joël Teuscher, Jan Cornelius Brauer, Mateusz Barnaba Wielopolski, Elham Ghadiri, Jelissa Risse, Angela Punzi

Photoinduced electron transfer (PET) across molecular/bulk interfaces has gained attention only recently and is still poorly understood. These interfaces offer an excellent case study, pertinent to a variety of photovoltaic systems, photo- and electrochemi ...

2011

Efficient Electron Transfer and Sensitizer Regeneration in Stable π-Extended Tetrathiafulvalene-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Jacques-Edouard Moser, Robin Humphry-Baker, Joël Teuscher, Davide Di Censo, Sophie Wenger, Qianli Chen

The development of metal-free organic sensitizers is a key issue in dye-sensitized solar cell research. We report successful photovoltaic conversion with a new class of stable tetrathiafulvalene derivatives, showing surprising electrochemical and kinetic p ...

American Chemical Society2010

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