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Michael Graetzel

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Related publications (1,223)

Effect of coadsorbent on the photovoltaic performance of squaraine sensitized nanocrystalline solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Robin Humphry-Baker, Thomas Geiger, Jun Ho Yum, Soo-Jin Moon

The effect of chenodeoxycholic acid as the coadsorbent with a squaraine sensitizer on TiO2 nanocrystalline solar cells was investigated, and it was found that the coadsorbent prevents the squaraine sensitizer from aggregating on the TiO2 nanoparticles but ...

2008

New Organic Sensitizer for Stable Dye-Sensitized Solar Cells with Solvent-Free Ionic Liquid Electrolytes

Michael Graetzel, Shaik Mohammed Zakeeruddin, Nuttapol Pootrakulchote, Yiming Cao, Peng Wang

We report a high molar extinction coefficient metal-free sensitizer composed of a triarylamine donor in combination with the 2-(2,2'-bithiophen-5-yl)acrylonitrile conjugation unit and cyanoacrylic acid as an acceptor. In conjugation with a volatile acetoni ...

2008

Transition Metal Complexes as Sensitizers for Efficient Mesoscopic Solar Cells

Michael Graetzel

2008

Bifacial dye-sensitized solar cells based on an ionic liquid electrolyte

Pascal Comte, Michael Graetzel, Paul Liska, Shaik Mohammed Zakeeruddin

Solar energy is a promising solution to global energy-related problems because it is clean, inexhaustible and readily available. However, the deployment of conventional photovoltaic cells based on silicon is still limited by cost, so alternative, more cost ...

Nature Publishing Group2008

Light-emitting material

Michael Graetzel, Mohammad Khaja Nazeeruddin

This invention pertains to light emitting materials comprising novel ortho-metalated transition metal complexes [C^N] 2 ML comprising two orthometalated ligands having imidazole moieties and an ancillary ligand of ²-diketonate type. It has been surprisingl ...

2008

Molecular wiring of LiFePO4 (Olivine)

Michael Graetzel, Ladislav Kavan

The carbon-free LiFePO4 (olivine) was modified by a monolayer coverage with [12-(2,5-di-tert-butyl-4-methoxy-phenoxy)-dodecyl]-phosphonic acid, coded DW. Thin film electrodes were bonded with 5% PVDF and deposited on F-doped SnO2 (FTO) support. The surface ...

2008

Artificial photosynthesis based on dye-sensitized nanocrystalline TiO2 Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin

2008

High-performance dye-sensitized solar cells based on solvent-free electrolytes produced from eutectic melts

Michael Graetzel, Shaik Mohammed Zakeeruddin, Yu Bai, Mingkui Wang, Yiming Cao

2008

A new ion-coordinating ruthenium sensitizer for mesoscopic dye-sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Robin Humphry-Baker, Henry Snaith

2008

Organic Dye-Sensitized Ionic Liquid Based Solar Cells: Remarkable Enhancement in Performance through Molecular Design of Indoline Sensitizers

Michael Graetzel, Shaik Mohammed Zakeeruddin, Robin Humphry-Baker

Wiley-VCH Verlag GmbH2008

Phenomenally High Molar Extinction Coefficient Sensitizer with "Donor- Acceptor” Ligands for Dye-Sensitized Solar Cell Applications

Michael Graetzel, Mohammad Khaja Nazeeruddin, Robin Humphry-Baker, Jun Ho Yum

A phenomenally high molar extinction coefﬁcient heteroleptic ruthenium(II) complex [Ru(4,4′-carboxylic acid-2,2′- bipyridine)(4,4′-(4-{4-methyl-2,5-bis[3-methylbutoxy]styryl}-2,5-bis[3- methylbutoxy]-2,2′-bipyridine)(NCS)2] (DCSC13) was synthesized by inco ...

2008

Energy-Level and Molecular Engineering of Organic D-pi-A Sensitizers in Dye-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Nuttapol Pootrakulchote, Peng Wang, Jin Guo

A series of organic D-pi-A sensitizers composed of different triarylamine donors in conjugation with the thienothiophene unit and cyanoacrylic acid as an acceptor has been synthesized at a moderate yield. Through tuning the number of methoxy substituents o ...

2008

Highly Efficient Solar Cells Using Organic Dyes with Amorphous Moiety

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jun Ho Yum, Il Jung, Filippo de Angelis

Novel organic sensitizers comprising donor; electron-conducting, and anchoring groups were engineered at molecular level and synthesized. The functionalized unsymmetrical organic sensitizers 3-{5-[N,N-Bis(9,9-dimethylfluorene-2-yl)phenyl]-thiophene-2-yl}-2 ...

MRS2007

Electronic Properties of the Interface between p-CuI and anatase-phase n-TiO2 sngle crystal and nanoparticulate surfaces: A photoelectrochemical Study

Michael Graetzel, Scott Charles Warren

2007

Amphiphilic ruthenium dye as an ideal sensitizer in conversion of light to electricity using ionic liquid crystal electrolyte

Michael Graetzel, Mohammad Khaja Nazeeruddin

Elsevier2007

Controlling Phosphorescence Color and Quantum Yields in Cationic Iridium Complexes: A Combined Experimental and Theoretical Study

Michael Graetzel, Kuppuswamy Kalyanasundaram, Jacques-Edouard Moser, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Nicholas Evans, Filippo de Angelis

2007

Novel Nano-Structured Silica-Based Electrolytes Containing Quaternary Ammonium Iodide Moieties

Michael Graetzel, Shaik Mohammed Zakeeruddin

A series of new hybrid organic-inorganic molecules were prepared either by grafting of aminopropyltriethoxysilane (APTS) on silica nanoparticles followed by quaternarization of the nitrogen with ethyl, heptyl and isopropyl iodides or by grafting of N,N,N-t ...

2007

Molecular cosensitization for efficient panchromatic dye-sensitized solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jun Ho Yum

Wiley-VCH Verlag GmbH2007

Sensor technologies based on a cellulose supported platform

Michael Graetzel, Mohammad Khaja Nazeeruddin

A simple approach to sensor development based on encapsulating a probe molecule in a cellulose support followed by regeneration from an ionic liquid solution is demonstrated here by the codissolution of cellulose and 1-(2-pyridylazo)-2- naphthol in 1-butyl ...

Royal Society of Chemistry2007

Efficient Sensitization of Nanocrystalline TiO2 Films by a Near Infrared Absorbing Unsymmetrical Zinc Phthalocyanine

Michael Graetzel, Kuppuswamy Kalyanasundaram, Mohammad Khaja Nazeeruddin, Henry Snaith, Jun Ho Yum

Wiley-VCH Verlag GmbH2007

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