Publications associées à A new family of substituted triethoxysilyl iodides as organic iodide sources for dye-sensitised solar cells

Publications associées (43)

Stress Engineering for Mitigating Thermal Cycling Fatigue in Perovskite Photovoltaics

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Yi Zhang

Mechanical residual stresses within multilayer thin-film device stacks become problematic during thermal changes because of differing thermal expansion and contraction of the various layers. Thin-film photovoltaic (PV) devices are a prime example where thi ...

Amer Chemical Soc2024

Disorder-induced bulk photovoltaic effect in a centrosymmetric van der Waals material

Andras Kis, Mukesh Kumar Tripathi, Zhe Sun, Juan Francisco Gonzalez Marin, Cheol Yeon Cheon

Sunlight is widely seen as one of the most abundant forms of renewable energy, with photovoltaic cells based on pn junctions being the most commonly used platform attempting to harness it. Unlike in conventional photovoltaic cells, the bulk photovoltaic ef ...

2023

Mixed cation 2D perovskite: a novel approach for enhanced perovskite solar cell stability

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Yi Zhang, Hiroyuki Kanda, Bin Ding, Yong Ding, Xiaoxin Gao, Mousa Abdulla M E Abuhelaiqa

The integration of thin 2D perovskite layers at the 3D PVK/HTL interface is known to improve the power conversion efficiency and stability of perovskite solar cells (PSCs). In this work, we report a novel approach consisting of mixing two alkyl-based catio ...

ROYAL SOC CHEMISTRY2022

A Functional Perspective on Information Measures

Amedeo Roberto Esposito

Since the birth of Information Theory, researchers have defined and exploited various information measures, as well as endowed them with operational meanings. Some were born as a "solution to a problem", like Shannon's Entropy and Mutual Information. Other ...

EPFL2022

Cation optimization for burn-in loss-free perovskite solar devices

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Sanghyun Paek, Cristina Roldán Carmona, Marius Franckevicius, Olga Syzgantseva

Hybrid lead halide perovskites will potentially lead the future energy scenario if highly efficient cells have long-term stability. Here we combine state-of-the art mixed-cation formulations containing formamidinium (FA) and methylammonium (MA), with optim ...

Royal Society of Chemistry2021

Discretisation and continuity: The emergence of symbols in communication

Martin Alois Rohrmeier, Robert Lieck

Vocal signalling systems, as used by humans and various non-human animals, exhibit discrete and continuous properties that can naturally be used to express discrete and continuous information, such as distinct words to denote objects in the world and proso ...

2021

A semiconducting polymer bulk heterojunction photoanode for solar water oxidation

Kevin Sivula, Jun Ho Yum, Liang Yao, Nestor Guijarro Carratala, Yongpeng Liu, Florent Alexandre Boudoire, Arvindh Sekar, Rebekah Anne Wells, Han-Hee Cho

Organic semiconductors hold promise to enable scalable, low-cost and high-performance artificial photosynthesis. However, the performance of systems based on organic semiconductors for light-driven water oxidation have remained poor compared with inorganic ...

NATURE RESEARCH2021

Zero-dimensional hybrid iodobismuthate derivatives: from structure study to photovoltaic application

Mohammad Khaja Nazeeruddin, Farzaneh Fadaei Tirani, Yi Zhang, Philip Pattison, Peng Gao, Kurt Schenk, Peng Gao

The quest for lead-free light-absorbing perovskite materials has long been the target of researchers to make the 'star' material friendly to the commercial market. After a summary of different lead-free solar absorbers, we demonstrate a zero-dimensional io ...

ROYAL SOC CHEMISTRY2020

Optical absorption properties of metal-organic frameworks: solid stateversusmolecular perspective

Berend Smit, Anne-Clémence Corminboeuf, Ivano Tavernelli, Maria Fumanal Quintana

The vast chemical space of metal and ligand combinations in Transition Metal Complexes (TMCs) gives rise to a rich variety of electronic excited states with local and non-local character such as intra-ligand (IL), metal-centered (MC), metal-to-ligand (MLCT ...

2020

In-situ mapping of the molecular arrangement of amphiphilic dye molecules at the TiO2 surface of dye sensitized solar cells

Michael Graetzel, Ursula Röthlisberger, Francesco Stellacci, Ivano Tavernelli, Nicolas Tétreault, Kislon Voitchovsky, Negar Ashari Astani, Hauke Arne Harms

Amphiphilic sensitizers are central to the function of dye-sensitized solar cells. It is known that the cells performance depends on the molecular arrangement and the density of the dye on the semiconductor surface, but a molecular-level picture of the cel ...

2015

Fine-Tuning by Triple Bond of Carbazole Derivative Dyes to Obtain High Efficiency for Dye-Sensitized Solar Cells with Copper Electrolyte

Ulf Anders Hagfeldt, Li Zhang

Three novel dyes consisting of a 5,8,15-tris(2-ethylhexyl)-8,15-dihydro-SH-benzo[1,2-b:3,4-b':6,5-b '']tricarbazole (BTC) electron-donating group and a 4,7-bis(4-hexylthiophen-2-yl)benzo[c][1,2,5]thiadiazole (BTBT) pi-bridge with an anchoring group of phen ...

AMER CHEMICAL SOC2020

Boosting the power conversion efficiency of perovskite solar cells to 17.7% with an indolo[3,2-b]carbazole dopant-free hole transporting material by improving its spatial configuration

Ulf Anders Hagfeldt, Xiaoqing Jiang

The development of facilely synthesized, dopant-free hole-transporting materials (HTMs) with high efficiency is of great significance for the potential application of perovskite solar cells (PSCs). Herein, we report two novel indolo[3,2-b]carbazole (ICZ) b ...

Royal Society of Chemistry2019

Lessons from Nature: Computational Design of Biomimetic Compounds and Processes

Ursula Röthlisberger, Pablo Campomanes Ramos, Elizabeth Claire Brunk, Negar Ashari Astani, Esra Bozkurt, Nicholas John Browning

Through millions of years of evolution, Nature has accomplished the development of highly efficient and sustainable processes and the idea to understand and copy natural strategies is therefore very appealing. However, in spite of intense experimental and ...

2014

Multifunctional Molecular Modulation for Efficient and Stable Hybrid Perovskite Solar Cells

Michael Graetzel, David Lyndon Emsley, Dominik Józef Kubicki, Jovana Milic

Hybrid organic-inorganic perovskites have become one of the leading thin-film semiconductors for optoelectronics. Their broad application will greatly depend on overcoming the key obstacles associated with poor stability and limited scalability. There has ...

2019

Low band gap S,N-heteroacene-based oligothiophenes as hole-transporting and light absorbing materials for efficient perovskite-based solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Peng Qin

Novel low band gap oligothiophenes incorporating S,N-heteropentacene central units were developed and used as hole-transport materials (HTMs) in solid-state perovskite-based solar cells. In addition to appropriate electronic energy levels, these materials ...

Royal Society of Chemistry2014

Differential Response of the Photoluminescence and Photocurrent of Polycrystalline CH(3)NH(3)PbI(3 )and CH3NH3PbBr3 to the Exposure to Oxygen and Nitrogen

László Forró, Andrzej Sienkiewicz, Endre Horvath, Márton Kollár, Anastasiia Glushkova, Konstantins Mantulnikovs

Because of their excellent photoelectric properties, organic-inorganic metal halide perovskites (MHPs), such as methylammonium lead triiodide, CH3NH3PbI3 (MAPbI(3)), and methylammonium lead tribromide, CH3NH3PbBr3 (MAPbBr(3)), are of great interest for the ...

2019

Quantum dot-sensitized solar cells based on directly adsorbed zinc copper indium sulfide colloids

Nestor Guijarro Carratala

Heavy metal-based quantum dots (QDs) have been demonstrated to behave as efficient sensitizers in QD-sensitized solar cells (QDSSCs), as attested by the countless studies and encouraging efficiencies reported so far. However, their intrinsic toxicity has a ...

Royal Soc Chemistry2014

Optoelectronic and/or electrochemical learning device

Michael Graetzel, Hoi Nok Tsao

The present invention concerns photoelectronic and/or optoelectronic learning device and/or memory device. In an embodiment, the device is a dye- sensitized solar cell. The short circuit photocurrent density (Jsc) of the device, and wherein a degree of a J ...

2018

Rediscovering a Key Interface in Dye-Sensitized Solar Cells: Guanidinium and Iodine Competition for Binding Sites at the Dye/Electrolyte Surface

Robin Humphry-Baker, Xiong Li, Xavier Adrian Jeanbourquin

We propose a new mechanism by which the common electrolyte additive guanidinium thiocyanate (GdmSCN) improves efficiency in dye-sensitized solar cells (DSSCs). We demonstrate that binding of Gdm(+) to TiO2 is weak and does not passivate recombination sites ...

American Chemical Society2014

Atomically Altered Hematite for Highly Efficient Perovskite Tandem Water-Splitting Devices

Michael Graetzel, Shaik Mohammed Zakeeruddin, Chenyi Yi

Photoelectrochemical (PEC) cells are attractive for storing solar energy in chemical bonds through cleaving of water into oxygen and hydrogen. Although hematite (alpha-Fe2O3) is a promising photoanode material owing to its chemical stability, suitable band ...

Wiley-VCH Verlag Berlin2017