A5072368315- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Thin-Film Transistor Technologies
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Molecular Junctions and Nanostructures
- Force Microscopy Techniques and Applications
- Perovskite Materials and Applications
- Silicon and Solar Cell Technologies
- Organic Light-Emitting Diodes Research
- Quantum Dots Synthesis And Properties
- Analytical Chemistry and Sensors
- Flexible and Reconfigurable Manufacturing Systems
- Integrated Circuits and Semiconductor Failure Analysis
- Ion-surface interactions and analysis
- Advanced Chemical Physics Studies
- Gold and Silver Nanoparticles Synthesis and Applications
- ZnO doping and properties
- Atomic and Molecular Physics
- Gas Sensing Nanomaterials and Sensors
- Plasmonic and Surface Plasmon Research
- Nanowire Synthesis and Applications
- Atmospheric aerosols and clouds
- Semiconductor Lasers and Optical Devices
- Geophysics and Gravity Measurements
Centre Interdisciplinaire de Nanoscience de Marseille
2015-2024
Centre National de la Recherche Scientifique
2015-2024
European Organisation for the Exploitation of Meteorological Satellites
2005-2024
Aix-Marseille Université
2015-2024
Institute of Molecular Functional Materials
2024
Délégation Provence et Corse
2017
Goethe Institute
2017
Goethe University Frankfurt
2017
Canadian Nautical Research Society
2016
Integrated Detector Electronics AS (Norway)
2015-2016
An adequate estimation of the aerosol extinction-to-backscatter ratio S is important for solving underdetermined single scattering lidar equation and investigating climate impact aerosols. In this study, ratios Nd:YAG wavelengths are calculated continental, maritime, desert aerosols; corresponding components varied within expected natural variabilities particle number mixing ratios. For continental aerosol, increases with relative humidity f from 40 to 80 sr. maritime lie between 15 30 sr...
Hybrid oligothiophenes based on a various combinations of thiophene and 3,4-ethylenedioxythiophene (EDOT) groups have been synthesized. UV/Vis absorption spectra show that the number relative positions EDOT considerably affect width HOMO-LUMO gap rigidity conjugated system. Analysis crystallographic structure two hybrid quaterthiophenes confirms insertion adjacent units in middle molecule leads to self-rigidification systems by intramolecular SO interactions. Cyclic voltammetry data shows...
The European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT) Polar System is contribution to European–U.S. operational polar meteorological satellite system (Initial Joint System). It serves midmorning (a.m.) orbit 0930 Local Solar Time (LST) descending node. EUMETSAT satellites this new are Operational Satellite (Metop) satellites, jointly developed with ESA. Three Metop foreseen at least 14 years operation from 2006 onward and will support meteorology climate...
Preparation of size‐tunable ultrathin W 18 O 49 nanowires by an alcohol‐assisted solvothermal decomposition tungstic acid is reported. The synthesis can be achieved at large scale and low cost, while changing the molecular size used alcohols control nanowire morphology. With increasing alcohol, synthesized have smaller diameters longer lengths. as‐prepared blue nanomaterials show a very strong visible light absorption caused oxygen defects aspect ratio‐dependent photocatalytic activity on...
Critical to the development of organic electronics is design and synthesis new semiconductors with improved electrical performance enhanced environmental stability. We present in this communication a series simple oligothiophene derivatives that bear styryl unit as terminal substituent. Thin film field-effect transistors incorporating these compounds show high performance, such mobilities 0.1 cm2/Vs, along exceptional stability under ambient conditions. Especially, longer oligomer, DS-4T,...
Abstract In the field of photovoltaic energy conversion, hybrid inorganic/organic devices represent promising alternatives to standard systems in terms exploiting specific features both organic semiconductors and inorganic nanomaterials. Two main categories solar cells coexist today, which make much use metal oxide nanostructures based on titanium dioxide (TiO 2 ) zinc (ZnO) as electron transporters. These oxides are cheap synthesise, non‐toxic, biocompatible have suitable charge transport...
Optical spacers based on metal oxide layers have been intensively studied in poly(3‐hexylthiophene) (P3HT) polymer solar cells for optimizing light distribution inside the device, but to date, potential of such a spacer improve electronic performance simultaneously has not yet be investigated. Here, detailed study improvement high efficient by insertion solution‐processed ZnO optical using ethanolamine surface modification is reported. Insertion modified strongly improves even absence an...
This work presents hybrid bulk heterojunction solar cells based on dye-sensitized zinc oxide (ZnO) nanorods blended with poly(3-hexylthiophene) (P3HT). Tetra(4-carboxyphenyl)porphyrin (TCPP) molecules were grafted onto the surface of ZnO to enlarge absorption spectrum blend. We demonstrate that additional bands in external quantum efficiency (EQE) spectra corresponding Soret and Q-band can already been observed at very low dye concentration surface. Therefore, direct grafting TCPP leads...
Photostability of organic photovoltaic devices represents a key requirement for the commercialization this technology. In field, ZnO is one most attractive materials employed as an electron transport layer, and investigation its photostability particular interest. Indeed, oxygen known to chemisorb on can be released upon UV illumination. Therefore, deep analysis UV/oxygen effects working relevant industrial production where coating processes take place in air oxygen/ZnO contact cannot...
Analytical electron microscopy reveals local molecular arrangements of PBDB-T:ITIC determining performance current organic solar cells.
A systematic study of the intrinsic photostability ITIC, ITIC-Th and ITIC-4F in solution, layers blends with donor polymers is done. The temperature effect show that amorphous to crystalline transition promotes stability.
The use of fullerene as acceptor limits the thermal stability organic solar cells at high temperatures their diffusion inside donor leads to phase separation via Ostwald ripening. Here it is reported that fully suppressed up 140 °C in bulk heterojunctions based on benzodithiophene‐based polymer (the poly[[4,8‐bis[(2‐ethylhexyl)oxy]‐benzo[1,2‐b:4,5‐b′]dithiophene‐2,6‐diyl][3‐fluoro‐2‐[(2‐ethylhexyl)carbonyl]‐thieno[3,4‐b]thiophenediyl]], (PTB7) combination with derivative...
Effects of ultraviolet soaking on surface electronic structures solution processed ZnO nanoparticle films in combination with vacuum or oxygen polymer solar cells were researched.
The color of polymer solar cells using an opaque electrode is given by the reflected light, which depends on composition and thickness each layer device. Metal‐oxide‐based optical spacers are intensively studied in aiming to optimize light absorption. However, low conductivity materials such as ZnO TiO 2 limits tenths nanometers. A novel synthesis route cluster‐free Al‐doped (AZO) nanocrystals (NCs) presented for solution processing highly conductive layers without need temperature...
Generation and recombination of electrons holes in organic solar cells occurs via charge transfer states located at the donor/acceptor interface. The energy these is a crucial factor for attainable open-circuit voltage its correct determination thus utmost importance detailed understanding such devices. This work reports on drastic changes electroluminescence spectra bulk heterojunction upon variation absorber layer thickness. It shown that optical thin-film effects have large impact...
To detect the band‐specific optical signals used in many fields, it is necessary to develop spectrally selective photodetection. For such wavelength‐selective photodetection or color discrimination, organic photodetectors (OPDs) can offer significant benefits as low temperature and solution processability, chemical versatility, specific spectral detection range. However, avoid commonly filters, design of a narrowing approach that simultaneously achieves range with bandwidth less than 50 nm...
The substitution pattern of oligothienylenevinylenes (see Figure) exerts a determining effect on the packing arrangement individual oligomers in solid state, and thus field‐effect mobility. These two parameters are tightly correlated to propensity corresponding cation radical dimerize solution. analysis π‐dimerization conjugated radicals solution could be used screen new candidates for devices.
A theoretical analysis of the lateral force as measured with a scanning microscope is performed, showing that signal contains topography-induced component which proportional to slope surface, in addition arising from tangential force. Measurements carried out on corrugated samples (gold, indium-tin-oxide, diamond) are analysed within framework this theory basis simple physical model for forces, taking into account repulsive normal force, friction and an adhesion The correlation between...
Atomistic simulations and experimental investigations are combined to study heterojunction interfaces of hybrid polymer solar cells, with the aim better understand precisely predict their photovoltaic properties. The focus is on a ternary model system based poly(3‐hexylthiophene) (P3HT)/zinc phthalocyanine (ZnPc)/ZnO interface, in which ZnPc interlayer applied improve performance interface. Theoretical predictions validated against properties concrete P3HT/ZnPc/ZnO planar device. theoretical...
The effects of energetic heavy ions passing through a solid are reflected in the size, shape, and structure individual latent tracks. Their detailed study thus provides information on primary processes energy deposition, which results bond breaking, lattice disruption, increased chemical reactivity. Furthermore, ion track cross sections, being objects very limited well suited for studies material properties such as friction nanometer scale. present work displays scanning force microscopy...