A5071547358- Organic Electronics and Photovoltaics
- Molecular Junctions and Nanostructures
- Conducting polymers and applications
- Crystallization and Solubility Studies
- Surface Chemistry and Catalysis
- X-ray Diffraction in Crystallography
- Organic Light-Emitting Diodes Research
- Nonlinear Optical Materials Research
- Semiconductor materials and interfaces
- Force Microscopy Techniques and Applications
- Quantum Dots Synthesis And Properties
- Advanced Memory and Neural Computing
- Perovskite Materials and Applications
- Advanced Photocatalysis Techniques
- Porphyrin and Phthalocyanine Chemistry
- Nonlinear Optical Materials Studies
- Fullerene Chemistry and Applications
- Thin-Film Transistor Technologies
- Photochemistry and Electron Transfer Studies
- Copper-based nanomaterials and applications
- ZnO doping and properties
- Analytical Chemistry and Sensors
- Photochromic and Fluorescence Chemistry
- Gas Sensing Nanomaterials and Sensors
- Photonic and Optical Devices
Centre National de la Recherche Scientifique
2011-2021
Institut Parisien de Chimie Moléculaire
2005-2021
Sorbonne Université
2012-2021
Nanyang Technological University
2007-2021
3M (United States)
2014-2017
National University of Singapore
2016
Université Paris Cité
2010-2014
UPMC Health System
2014
Délégation Ile-de-France Villejuif
2014
CEA Paris-Saclay
2002-2011
The first all‐organic electronic device to boast the same characteristics as silicon‐based ones is reported. Not only does use of an organic insulating layer result in increased charge‐carrier mobility semiconductor, but it also imparts a flexible quality whole which allows be rolled up, bent or twisted without reducing performance. organic‐based devices show remarkable tolerance towards moisture and impurities, production being possible normal laboratory environment.
Over the last ten years, conjugated oligothiophenes have emerged as one of largest families organic semiconductors with potential applications in electronics devices. Thin film transistors (TFTs), photovoltaic solar cells, light-emitting diodes (LEDs), light modulators, photochromic switches and laser microcavities are some examples devices that been fabricated active materials. The key advantage well-defined oligomers over their parent polymers is high degree molecular crystalline ordering...
Organic field-effect transistors, in which the active semiconductor is made of oligothiophenes various lengths, have been fabricated and characterized. A method developed to estimate mobility μ corrected for contact series resistance. The found increase by a factor nearly 100 from quaterthiophene (4T) octithiophene (8T). More importantly, increases quasilinearly with gate voltage. origin this bias dependence discussed. One explanation could be presence traps that limit charge transport....
n‐Type—electron transporting—conduction is demonstrated for Schottky diodes and field effect transistors based on N,N ′‐diphenyl‐3,4,9,10‐perylenetetracarboxylic‐dimide. The role of the electron‐injecting electrode discussed, as are potential improvements in performance offered by devices combining a p‐type semiconducting layer with an n‐type, electron transporting organic compound.
Metal-insulator-semiconductor field-effect transistors (MISFETs) based on organic semiconductors, mainly conjugated polymers and oligomers, have been reported recently. Unlike conventional MISFETs, these devices work through the modulation of an accumulation layer at semiconductor-insulator interface. A model for derived by changing classical equations according to this particular operating mode is proposed. The ohmic current, parallel channel due nonrectifying character source drain...
Thin-film transistors (TFTs) were fabricated with a variety of organic polymer insulators topped vacuum evaporated semiconductor, α-sexithienyl (α6T). No field-enhanced source-drain current was obtained polystyrene (PSt) and polymethylmethacrylate (PMMA). The is weak polyvinyl chloride (PVC), but much stronger alcohol (PVA) cyanoethylpullulan (CYEPL), cyanoethylated polysaccharide which possesses high dielectric constant (εr=18.5 at 10 kHz). In these last two instances, the field-effect...
Abstract Layered double hydroxides (LDHs) are bimetallic that currently attract considerable attention as co-catalysts in photoelectrochemical (PEC) systems view of water splitting under solar light. A wide spectrum LDHs can be easily prepared on demand by tuning their chemical composition and structural morphology. We describe here the electrochemical growth NiFe-LDH overlayers Cu 2 O electrodes study PEC behavior. By using modified O/NiFe-LDH we observe a remarkable seven-fold increase...
In the quest for mass production of hydrogen from water electrolysis, to develop highly efficient, stable and low-cost catalysts is still central challenge.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVibrational Studies of a Series .alpha.-Oligothiophenes as Model Systems PolythiopheneG. Louarn, J. P. Buisson, S. Lefrant, and D. FichouCite this: Phys. Chem. 1995, 99, 29, 11399–11404Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published inissue 1 July 1995https://pubs.acs.org/doi/10.1021/j100029a016https://doi.org/10.1021/j100029a016research-articleACS PublicationsRequest reuse permissionsArticle...
The gap between laser dyes and luminescent polymers —on the way to polymer diode‒is bridged by conjugated oligothiophenes, according results reported here. Evidence for optically pumped spectral narrowing in ultrathin single crystals of α‐octithiophene (α‐8T) is presented. For example, gain two narrow emission lines that appear when are can be described usual framework stimulated emission. In contrast dye‐doped crystals, α‐8T provides both emitter optical cavity.
Fluorescence and fluorescence excitation spectra have been measured for solid solutions of tetrathiophene in tetradecane at 12 4.2 K. At K, the exhibit full vibrational resolution {inhomogeneous origin [full width half-maximum, (FWHM)] approximately 5 cm−1 }. Narrow band detection establish that there are four independent, but nearly identical excitation/emission pairs with dipole allowed origins 22 248, 241, 214, 187 cm−1. The data consistent idea these multiple come from a single confomer...
α‐Octithiophene, the highest non‐substituted member of α‐oligothiophene family known to date, has been obtained as razor‐blade thin, bright red single crystals shown between crossed polarizers on cover this issue. The synthesis, purification, crystal growth, and X‐ray analysis are reported. ratio a c cell parameters is found be exceptionally high ( a/c , nearly 10), making record holder for structural anisotropy among organic crystals.
The two-dimensional (2D) crystal engineering of molecular architectures on surfaces requires controlling various parameters related respectively to the substrate, chemical structure molecules, and environmental conditions. We investigate here influence temperature self-assembly hexakis(n-dodecyl)-peri-hexabenzocoronene (HBC-C(12)) adsorbed gold using scanning tunneling microscopy (STM) at liquid/solid interface. show that packing density 2D self-assembled HBC-C(12) can be precisely tuned by...
Weak intermolecular interactions in organic semiconducting molecular crystals play an important role determining packing and electronic properties. Single of metal-free metal phthalocyanines were synthesized to investigate how the coordination central atom affects their resultant Single-crystal field-effect transistors made showed a hole mobility order ZnPc>MnPc>FePc>CoPc>CuPc>H2 Pc>NiPc. Density functional theory (DFT) 1D polaron transport reach good agreement reproducing experimentally...