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Mohammad Khaja Nazeeruddin

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Publications associées (846)

Structure-Function Relationships in Unsymmetrical Zinc Phthalocyanines for Dye-Sensitized Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jun Ho Yum

A series of unsymmetrical zinc phthalocyanines bearing an anchoring carboxylic function linked to the phthalocyanine ring through different spacers were designed for dye-sensitised solar cells (DSSC). The modification of the spacer group allows not only a ...

2009

Cyclometallated iridium complexes for conversion of light into electricity and electricity into light

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jun Ho Yum

This brief review describes applications of cyclometallated iridium complexes for energy saving organic light-emitting devices (OLED's) and energy generating molecular photovoltaic cells. The first part consists of a short overview of the methods to modula ...

2009

Design and synthesis of a novel anchoring ligand for highly efficient thin film dye-sensitized solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Nuttapol Pootrakulchote, Amaresh Mishra

Royal Society of Chemistry2009

White-light phosphorescence emission from a single molecule: application to OLED

Michael Graetzel, Kuppuswamy Kalyanasundaram, Mohammad Khaja Nazeeruddin, Filippo de Angelis

A simple mononuclear cyclometallated iridium(III) complex exhibits white photo- and electro-luminescence in the wavelength range from 440 to 800 nm, which originates from a single emitting excited state of mixed character. ...

Royal Society of Chemistry2009

PbS and US Quantum Dot-Sensitized Solid-State Solar Cells: "Old Concepts, New Results"

Michael Graetzel, Mohammad Khaja Nazeeruddin, Frank Nüesch, Shaik Mohammed Zakeeruddin, Thomas Geiger, Peter Chen, Soo-Jin Moon

2009

Fabrication of thin film dye sensitized solar cells with solar to electric power conversion efficiency over 10%

Pascal Comte, Michael Graetzel, Paul Liska, Mohammad Khaja Nazeeruddin, Carole Graetzel

Techniques of TiO2 film fabrication for dye-sensitized solar cells having a conversion efficiency of global air mass 1.5 (AM 1.5, 1000 W/m(2)) solar light to electric power over 10% are reported. Newly implemented fabrication technologies consist of pre-tr ...

2008

Molecular Engineering of Organic Sensitizers for Dye-Sensitized Solar Cell Applications

Michael Graetzel, Mohammad Khaja Nazeeruddin, Robin Humphry-Baker, Ulf Anders Hagfeldt, Jun Ho Yum, Filippo de Angelis

Novel unsym. org. sensitizers comprising donor, electron-conducting and anchoring groups were engineered at a mol. level and synthesized for sensitization of mesoscopic TiO2 injection solar cells. The unsym. org. sensitizers 3-(5-(4-(diphenylamino)styryl)t ...

2008

Synthesis, Characterization, and DFT/TD-DFT Calculations of Highly Phosphorescent Blue Light-Emitting Anionic Iridium Complexes

Michael Graetzel, Kuppuswamy Kalyanasundaram, Mohammad Khaja Nazeeruddin, Davide Di Censo, Nicholas Evans, Filippo de Angelis

2008

Effect of Coadsorbent on the Photovoltaic Performance of Zinc Pthalocyanine-Sensitized Solar Cells

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

2008

An element of surprise - efficient copper-functionalized dye-sensitized solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Takeru Bessho

Dye-sensitized solar cells with carboxylate-derivatized {(CuL2)-L-1} complexes are surprisingly efficient and offer a long-term alternative approach to ruthenium-functionalized systems. ...

Royal Society of Chemistry2008

Recent Developments in Solid-State Dye-Sensitized Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Peter Chen, Jun Ho Yum

2008

High Extinction Coefficient "Antenna" Dye in Solid-State Dye-Sensitized Solar Cells: A Photophysical and Electronic Study

Michael Graetzel, Jacques-Edouard Moser, Mohammad Khaja Nazeeruddin, Joël Teuscher, Henry Snaith

2008

Tri-tert-butylcarboxyphthalocyanines, uses thereof and a process for their preparation

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jun Ho Yum

Substituted carboxyphthalocyanines (I), wherein both the tert-butyl and carboxyl groups located in the four isoindole rings are located independently in any of the four positions of the corresponding benzene ring of each isoindole ring, its regioisomers an ...

2008

Sublimation Not an Innocent Technique: A Case of Bis-Cyclometalated Iridium Emitter for OLED

Philippe Bugnon, Michael Graetzel, Mohammad Khaja Nazeeruddin, Libero Zuppiroli, Rosario Scopelliti, Stéphane Suarez

Isomerization of a neutral bis-cyclometalated iridium(III) complex has been observed for the first time during the preparation of vacuum-processed organic light-emitting devices (OLEDs) and reproduced in solution. Isolation of the isomer revealed a cis org ...

2008

A mass spectrometric analysis of sensitizer solution used for dye-sensitized solar cell

Michael Graetzel, Mohammad Khaja Nazeeruddin, Guido Viscardi

2008

An Improved Perylene Sensitizer for Solar Cell Applications

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jun Ho Yum, Soo-Jin Moon, Felix Thomas Eickemeyer

1,6-Dithiophenol-substituted perylene organic sensitizer 1 was synthesized, and its photovoltaic properties in dye-sensitized solar cells were assessed. When anchored onto TiO2 film, the dye exhibits an unprecedented incident monochromatic photon-to-curren ...

2008

Electron-rich heteroaromatic conjugated bipyridine based ruthenium sensitizer for efficient dye-sensitized solar cells

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

A novel heteroleptic ruthenium complex carrying a heteroaromatic-4,4'-pi-conjugated 2,2'-bipyridine [Ru(II)LL'(NCS)(2)] (L = 4,4'-bis[(E)-2-(3,4-ethylenedioxythien-2-yl)vinyl]-2,2'-bipyridine, L' = 4,4'-(dicarboxylic acid)-2,2'-bipyridine) was synthesized ...

Royal Society of Chemistry2008

CdSe quantum dot-sensitized solar cells exceeding efficiency 1% at full-sun intensity

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Peter Chen, Jun Ho Yum

Colloidal cadmium selenide (CdSe) quantum dots QDs) have been prepared and exploited as inorganic dyes to sensitize a large-band-gap TiO2 layer for QD-sensitized solar cells. The optimized QD-sensitized solar cells exhibited an unprecedented incident photo ...

2008

Stepwise Cosensitization of Nanocrystalline TiO2 Films Utilizing Al2O3 Layers in Dye-Sensitized Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin

Wiley-VCH Verlag GmbH2008

A Highly Efficient and Thermally Stable Organic Sensitizers for Solvent Free Electrolyte Based Dye-Sensitized Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin

2008

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