Dye-sensitized solar cells (DSCs) based on nanocrystalline TiO2 have been fabricated with an amphiphilic ruthenium sensitizer NaRu(2,2'-bipyridine-4-carboxylic acid-4'-carboxylate)(4,4'-dinonyl-2,2'-bipyridine)(NCS)2, coded as Z-907, and a series of -guani ...

2007

Efficient co-sensitization of nanocrystalline TiO2 films by organic sensitizers

Michael Graetzel, Mohammad Khaja Nazeeruddin, Thomas Geiger, Jun Ho Yum

Royal Society of Chemistry2007

Porous Films from TiO2 (anatase) with Bimodal Morphology: Li-Insertion Electrochemistry

Pascal Comte, Michael Graetzel, Ladislav Kavan

2007

Liquid charge transporting material

Michael Graetzel, Shaik Mohammed Zakeeruddin, Henry Snaith

The present invention relates to optoelectronic and/or electrochemical devices comprising an organic charge transporting material which is liquid at a temperature of =180 DEG C. In particular in dye-sensitised solar cells, quantum efficiency higher than wi ...

2007

Photovoltaic performance and long-term stability of dye-sensitized mesoscopic solar cells

Michael Graetzel

The efficiency of electric power generation by dye-sensitized mesoscopic photovoltaic cells has been progressing steadily over the last years reaching now 11% in full sunlight. An important question for practical applications concerns the stability of thes ...

2006

Alkyl Chain Barriers for Kinetic Optimization in Dye-Sensitized Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin

2006

Synthesis, Characterization, and DFT-TDDFT Computational Study of a Ruthenium Complex Containing a Functionalized Tetradentate Ligand

Pascal Comte, Michael Graetzel, Paul Liska, Mohammad Khaja Nazeeruddin, Guido Viscardi, Davide Di Censo, Filippo de Angelis

A ruthenium complex trans-[Ru(L)(NCS)2], L ) 4,4¢¢¢-di- tert-butyl-4¢,4¢¢-bis(carboxylic acid)-2,2¢:6¢,2¢¢:6¢¢,2¢¢¢- quaterpyridine (N886), was synthesized and characterized by spectroscopic and electrochemical methods. The absorption spectrum of the N886 ...

2006

New Trends in Dye Sensitized Solar Cell Research

Michael Graetzel, Paul Liska, Ravindranathan Thampi, Henry Snaith

2006

The Influence of TiO2 Particle Size in TiO2/CuInS2 Nanocomposite Solar Cells

Michael Graetzel, Qian Wang

2006

Photovoltaic Characterization of Dye-sensitized Solar Cells: Effect of Device Masking on Conversion Efficiency

Pascal Comte, Michael Graetzel, Paul Liska, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Marie Jirousek, Péter Kalman Péchy, Raphaël Charvet

2006

Redox Targeting of Insulating Electrode Materials: A New Approach to High-Energy-Density Batteries

Michael Graetzel, Shaik Mohammed Zakeeruddin, Qian Wang

A compact energy‐storage system based on redox targeting is proposed, by which insulating LiFePO4 particles can be reversibly charged and discharged by redox shuttle molecules (S; see scheme) even in the absence of conducting additives. The energy density ...

Wiley-VCH Verlag GmbH2006

DFT-INDO/S modeling of new high molar extinction coefficient charge-transfer sensitizers for solar cell applications

Michael Graetzel, Paul Liska, Mohammad Khaja Nazeeruddin, Ulf Anders Hagfeldt

A new Ru(II) complex, Bu4N [ruthenium (4-carboxylic acid-4'-carboxylate-2,2'-bipyridine)(4,4'-di(2-(3,6-dimethoxyphenyl)ethenyl)-2,2'-bipyridine)(NCS)2] (N945H), was synthesized and characterized by anal., spectroscopic, and electrochem. techniques. The ab ...

2006

Encapsulation-free hybrid organic-inorganic light-emitting diodes

Michael Graetzel, Mohammad Khaja Nazeeruddin, Qian Wang

AIP American Institute of Physics2006

High Molar Extinction Coefficient Heteroleptic Ruthenium Complexes for Thin Film Dye-Sensitized Solar Cells

Bernard Wenger, Michael Graetzel, Jacques-Edouard Moser, Shaik Mohammed Zakeeruddin, Robin Humphry-Baker

2006

Molecular Wiring of Nanocrystals: NCS-Enhanced Cross-Surface Charge Transfer in Self-Assembled Ru-Complex Monolayer on Mesoscopic Oxide Films

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Robin Humphry-Baker

2006

The Advent of Mesoscopic Injection Solar Cells

Michael Graetzel

Mesoscopic injection solar cells operate in an entirely different fashion than conventional solar p‐n junction devices. Mimicking the principles that natural photosynthesis has used successfully over the last 3·5 billion years in solar energy conversion, t ...

2006

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