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Mohammad Khaja Nazeeruddin

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Related publications (846)

Weakly Conjugated Hybrid Zinc Porphyrin Sensitizers for Solid-State Dye-Sensitized Solar Cells

Mohammad Khaja Nazeeruddin, Christian Ludwig, Peng Qin, Kasparas Rakstys, Mohammad Ibrahim Dar, Hany ElBatal

Molecularly engineered weakly conjugated hybrid porphyrin systems are presented as efficient sensitizers for solid-state dye-sensitized solar cells. By incorporating the quinolizino acridine and triazatruxene based unit as the secondary light-harvester as ...

Wiley-Blackwell2016

Copper Thiocyanate Inorganic Hole-Transporting Material for High-Efficiency Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Cristina Roldán Carmona, Iwan Zimmermann, Giulia Grancini

In this Letter we show that the mixed perovskite in the form of (FAPbI(3))(0.85)(MAPbBr(3))(0.15) in combination with CuNCS as p-type hole conductor leads to over 16% power conversion efficiency (PCE) under full sun illumination and yields a remarkable mon ...

Amer Chemical Soc2016

Ruthenium phenanthroimidazole complexes for near infrared light-emitting electrochemical cells

Mohammad Khaja Nazeeruddin, Cristina Roldán Carmona

By adding different electron donor moieties to the ancillary ligand in ruthenium(II) phenanthroimidazole complexes, we successfully designed near infrared light emitting complexes suitable for light emitting electro-chemical cells (LECs). By using a single ...

Royal Society of Chemistry2016

Impact of strength and size of donors on the optoelectronic properties of D-pi-A sensitizers

Mohammad Khaja Nazeeruddin, Peng Gao

A series of carbazole based sensitizers with either phenyl based donors (TBC, TMC, OMC, PC, TBR, TMR, OMR and PR) or aryl amine based donors (OMNC, CNC and HNC) as well as one without a donor group (CC) have been synthesized to understand the influence of ...

RSC Publishing2016

Branched methoxydiphenylamine-substituted fluorene derivatives as hole transporting materials for high-performance perovskite solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Paul Gratia, Taisuke Matsui, Michael Saliba, Simona Urnikaite

Small-molecule hole transporting materials based on methoxydiphenylamine-substituted fluorene fragments were synthesized and incorporated into a perovskite solar cell, which displayed a power conversion efficiency of up to 19.96%, one of the highest conver ...

Royal Soc Chemistry2016

Efficiency enhancement of perovskite solar cells via incorporation of phenylethenyl side arms into indolocarbazole-based hole transporting materials

Mohammad Khaja Nazeeruddin, Kasparas Rakstys, Ieva Petrikyté, Iwan Zimmermann

Small-molecule hole transporting materials based on an indolocar-bazole core were synthesized and incorporated into perovskite solar cells, which displayed a power conversion efficiency up to 15.24%. The investigated hole transporting materials were synthe ...

Royal Soc Chemistry2016

Cover Picture: New Horizons for Perovskite Solar Cells Employing DNA-CTMA as the Hole-Transporting Material (ChemSusChem 13/2016)

Mohammad Khaja Nazeeruddin

The Cover picture shows deoxyribose nucleic acid (DNA) that has suitable optical and energy levels to be used as hole-transporting material (HTM) in perovskite solar cells. The power conversion efficiency and stability of a perovskite solar cell utilizing ...

Wiley-VCH Verlag Berlin2016

Glutathione Modified Gold Nanoparticles for Sensitive Colorimetric Detection of Pb2+ Ions in Rainwater Polluted by Leaking Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Peng Gao, Yaming Yu

In the past few years, the advent of lead halide perovskite solar cells (PSCs) has revolutionized the prospects of the third- generation photovoltaics and the reported power conversion efficiency (PCE) has been updated to 22%. Nevertheless, two main challe ...

American Chemical Society2016

High-Efficiency Perovskite Solar Cells Employing a S,N-Heteropentacene-based D-A Hole-Transport Material

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Ulf Anders Hagfeldt, Peng Gao, Amaresh Mishra, Marius Franckevicius, Dongqin Bi

We developed a new donor--acceptor-type hole-transport material (HTMs) incorporating S,N-heteropentacene as -spacer, triarylamine as donor, and dicyanovinylene as acceptor. In addition to appropriate frontier molecular orbital energies, the new HTM showed ...

Wiley-V C H Verlag Gmbh2016

Cobalt and/or copper complexes for use as hole transport layer dopants to improve optoelectronic or photoelectrochemical devices

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Ulf Anders Hagfeldt, Julian Burschka, Fabrizio Giordano, Marina Freitag

This invention discloses a new class of dopants that allows easy tuning of the chem., phys., optical and/or electronic properties of the doping agent in order to carefully adapt it to the desired application, such as org. solar cells or solid state dye-sen ...

2016

Enhanced Charge Collection with Passivation Layers in Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Peng Gao, Yonghui Lee, Jingshan Luo, Kyung Taek Cho, Minkyu Son, Jiyoun Seo

The Al2O3 passivation layer is beneficial for mesoporous TiO2-based perovskite solar cells when it is deposited selectively on the compact TiO2 surface. Such a passivation layer suppressing surface recombination can be formed by thermal decomposition of th ...

Wiley-V C H Verlag Gmbh2016

Low-voltage, high-brightness and deep-red light-emitting electrochemical cells (LECs) based on new ruthenium(II) phenanthroimidazole complexes

Mohammad Khaja Nazeeruddin, Cristina Roldán Carmona

Light-Emitting Electrochemical Cells (LECs) with a simple device structure ITO/Ru complex/Ga: In were prepared by using heteroleptic ruthenium(II) complexes containing 2-(2-hydroxyphenyl)-1(4-bromophenyl)-1h-imidazo[4,5-f][1,10] phenanthroline (hpbpip) as ...

Royal Society of Chemistry2016

Interface Play between Perovskite and Hole Selective Layer on the Performance and Stability of Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Laura Calio

Perovskite solar cells with variety of hole selective contacts such as 2,2',7,7'-tetrakis(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene (Spiro-OMeTAD), poly(3-hexylthiophene-2,5-diyl), poly[bis(4-phenyl)(2,5,6-trimentlyphenyl)amine], 5,10,15-trihexyl-3 ...

Amer Chemical Soc2016

A molecularly engineered hole-transporting material for efficient perovskite solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Ulf Anders Hagfeldt, Peng Gao, Sadig Aghazada, Juan-Pablo Correa-Baena, Antonio Abate, Taisuke Matsui, Michael Saliba, Filippo de Angelis

Soln.-processable perovskite solar cells have recently achieved certified power conversion efficiencies of over 20%, challenging the long-standing perception that high efficiencies must come at high costs. One major bottleneck for increasing the efficie ...

Nature Publishing Group2016

Beneficial Role of Reduced Graphene Oxide for Electron Extraction in Highly Efficient Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Yonghui Lee, Kyung Taek Cho, Sanghyun Paek, Giulia Grancini

In this work we systematically investigated the role of reduced graphene oxide (rGO) in hybrid perovskite solar cells (PSCs). By mixing rGO within the mesoporous TiO2 (m-TiO2) matrix, highly efficient solar cells with power conversion efficiency values up ...

Wiley-VCH Verlag Berlin2016

A highly hindered bithiophene-functionalized dispiro-oxepine derivative as an efficient hole transporting material for perovskite solar cells

Mohammad Khaja Nazeeruddin, Paul Gratia, Peng Gao, Kasparas Rakstys, Yonghui Lee, Kyung Taek Cho, Sanghyun Paek, Muhammad Sohail

Dimethoxydiphenylamine-substituted dispiro-oxepine derivative 2,2',7,7'-tetrakis-(N,N'-di-4-methoxyphenylamine)dispiro-[fluorene-9,4'-dithieno(3,2-c:2',3'-e]oxepine-6',9 ''-fluorene] (DDOF) has been designed and synthesized using a facile synthetic route. ...

Royal Society of Chemistry2016

Benzotrithiophene-Based Hole-Transporting Materials for 18.2% Perovskite Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Paul Gratia, Sadig Aghazada, Cristina Roldán Carmona, Iwan Zimmermann, Inés Garcia Benito

New star-shaped benzotrithiophene (BTT)-based hole-transporting materials (HTM) BTT-1, BTT-2 and BTT-3 have been obtained through a facile synthetic route by crosslinking triarylamine-based donor groups with a benzotrithiophene (BTT) core. The BTT HTMs wer ...

Wiley-VCH Verlag GmbH2016

Hole transport material for electrochemical or optoelectronic devices

Michael Graetzel, Mohammad Khaja Nazeeruddin, Kasparas Rakstys

ES 2575511 A1 20160629 • The present invention relates to novel compds., methods of prepg. the compds. and uses of the compds. as hole transport materials in optoelectronic devices or electrochem., and methods of producing devices. ...

2016

Novel hole transport materials and optoelectronic devices containing the same

Michael Graetzel, Mohammad Khaja Nazeeruddin, Sanghyun Paek, Antonio Abate

The present invention concerns novel silolothiophene-bridged triphenylamines and related compds. and their use as hole transport materials (HTM), for example in optoelectronic and/or electrochem. devices. These materials are particularly useful in org.-ino ...

Eur. Pat. Appl.2016

Monolithic perovskite/silicon-heterojunction tandem solar cells processed at low temperature

Michael Graetzel, Mohammad Khaja Nazeeruddin, Ulf Anders Hagfeldt, Ludmilla Steier, Juan-Pablo Correa-Baena, Antonio Abate, Michael Saliba

Tandem solar cells combining silicon and perovskite absorbers have the potential to outperform state-of-the-art high efficiency silicon single junction devices. However, the practical fabrication of monolithic silicon/perovskite tandem solar cells is chall ...

Royal Soc Chemistry2016

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