A5026079620- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Silicon and Solar Cell Technologies
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Thin-Film Transistor Technologies
- Chalcogenide Semiconductor Thin Films
- Molecular Junctions and Nanostructures
- Semiconductor materials and interfaces
- Organic Light-Emitting Diodes Research
- TiO2 Photocatalysis and Solar Cells
- Fullerene Chemistry and Applications
- Luminescence and Fluorescent Materials
- Analytical Chemistry and Sensors
- Advanced Battery Materials and Technologies
- Nanowire Synthesis and Applications
- Innovative Microfluidic and Catalytic Techniques Innovation
- Solid-state spectroscopy and crystallography
- Nanofabrication and Lithography Techniques
- Gas Sensing Nanomaterials and Sensors
- Carbon Nanotubes in Composites
- Semiconductor materials and devices
- Cerebral Venous Sinus Thrombosis
- Polymer crystallization and properties
- Synthesis and Characterization of Pyrroles
Institut Polytechnique de Bordeaux
2013-2024
Laboratoire de l'Intégration du Matériau au Système
2012-2024
Université de Bordeaux
2012-2024
Laboratory for Integrated Micro-Mechatronic Systems
2020-2024
Tokyo University of Science
2020-2024
Centre National de la Recherche Scientifique
2012-2024
The University of Tokyo
2018-2024
Université Clermont Auvergne
2006-2011
Hasselt University
2010-2011
Laboratoire Microorganismes Génome et Environnement
2010
A novel stable bisazide molecule that can freeze the bulk heterojunction morphology at its optimized layout by specifically bonding to fullerenes is reported. The concept demonstrated with various polymers: fullerene derivatives systems enable highly thermally polymer solar cells.
The influence of fullerene side chain functionalization on both the morphology and electro-optical properties bulk-heterojunction polymer:fullerene solar cells is discussed through a systematic investigation material blends consisting conjugated polymer poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylene vinylene] (MDMO-PPV) as donor molecules with different chains acceptor. varying fullerenes was found to induce morphological changes confirmed by analytical techniques such Transmission...
Development of carbon neutral and sustainable energy sources should be considered as a top priority solution for the growing worldwide demand. Photovoltaics are strong candidate, more specifically, organic photovoltaics (OPV), enabling design flexible, lightweight, semitransparent, low-cost solar cells. However, active layer OPV is, now, mainly deposited from chlorinated solvents, harmful environment human health. Active layers processed health environmentally friendly solvents have over...
Abstract This article is devoted to the study of photoaging and thermal aging poly[2‐methoxy‐5‐(3′,7′‐dimethyloctyloxy)‐1,4‐phenylenevinylene] (MDMO–PPV; also called OC1C10–PPV) used in organic solar cells. Thin MDMO–PPV films (thickness < 1 μm) were exposed ultraviolet‐light irradiation (λ > 300 nm) presence air or thermooxidized at 60 °C. The modifications chemical structure matrix analyzed with ultraviolet–visible infrared spectroscopy. oxidation products that formed identified by...
The addition of a block copolymer to the polymer/fullerene blend is novel approach fabrication organic solar cells. (P3HT-b-P4VP) used as nanostructuring agent in active layer. A significant enhancement cell efficiency observed, correlation with morphology control, both before (as-cast) and after annealing process. Detailed facts importance specialist readers are published "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by...
Several parameters of the fabrication process inverted polymer bulk heterojunction solar cells based on titanium oxide as an electron selective layer and molybdenum a hole were tested in order to achieve efficient organic photovoltaic cells. Thermal annealing treatment is common optimum morphology, but it proved be damageable for performance this kind We demonstrate using Auger analysis combined with argon etching that diffusion species occurs from MoO3/Ag top layers into active upon thermal...
The efficiency of organic photovoltaic (OPV) solar cells is constantly improving; however, the lifetime devices still requires significant improvement if potential OPV to be realised. In this study, several series inverted were fabricated and thermally aged in dark an inert atmosphere. It was demonstrated that all undergo short circuit current-driven degradation, which assigned morphology changes active layer. addition, a previously unreported, open voltage-driven degradation mechanism...
Abstract Here efficient organic photovoltaic devices fabricated from water‐based colloidal dispersions with donor:acceptor composite nanoparticles achieving up to 9.98% power conversion efficiency (PCE) are reported. This high for water processed solar cells is attributed morphology control by surface energy matching between the donor and acceptor materials. Indeed, due a low interfacial acceptor, no large phase separation occurs during nanoparticle formation process as well upon thermal...
Abstract Because oxygen cannot be fully eliminated from organic solar cells, the occurrence of oxidative photo‐degradation device in operating conditions has to considered. Polyphenylene‐vinylene‐based photovoltaic devices have a short lifetime that currently limits their applications. In this article, we focus on various transient species are potentially involved initiation step photo‐oxidation poly[2‐methoxy‐5‐(3′,7′‐dimethyloctyloxy)‐1,4‐phenylenevinylene] (MDMO‐PPV). The role was...
We report for the first time use of a microfluidic supercritical antisolvent process (μSAS) to synthesize semiconducting polymer nanoparticles (NPs) poly(3-hexylthiophene) (P3HT).
Understanding working mechanisms of selective interfacial layers and the underlying energetics organic semiconductor/electrode interface is an issue primary concern for improving solar cell technologies. TiO x interlayers are used here to tune selectivity cathode contact electrons by controlled UV‐light activation. The S ‐shaped kink observed deactivated titania completely disappears after 2 min exposure yielding high fill factor (≈60%) adequate efficiencies. activation complete cells alters...
Organic photovoltaic solar cells are a promising option for cheap, renewable energy, but must improve in their stability.
Borondifluoride complexes of curcuminoid derivatives end-capped with triphenylamine groups were designed for solution-processed bulk-heterojunction organic solar cells. They obtained very simply in a one-pot synthesis from cheap building blocks. Compared to push–pull systems based on borondifluoride hydroxychalcones, curcuminoids present the donor–acceptor–donor electronic structure and exhibit significantly improved chemical thermal stability photovoltaic performance. Indeed, power...
Photochemical H 2 evolution efficiency was increased by up to 500% when using Janus objects, designed decorating in an asymmetric way organic bulk heterojunction particles with Pt nanoclusters, compared their randomly covered counterparts.
The concept of sequential nanoprecipitation is developed to generate organic semiconductor core–shell nanoparticles with P3HT core and PCBM shell. Steady-state photoluminescence experiments on such enable the estimation exciton diffusion length at ∼14 nm.
The light activation phenomenon in inverted P3HT:PCBM bulk heterojunction organic solar cells based on titanium oxide sublayer (TiOx) is characterized by fast acquisition of current-voltage (J-V) curves under bias as function time. TiOx layers were thermally treated inert atmosphere at different temperatures prior active layer deposition and for every device an time was extracted. It shown that the higher annealing temperature, faster activation. improvement overall performances also...
2′-Hydroxychalcone derivatives featuring a triphenylamine terminal unit were synthesized in one step and behaved as effective ligands for borondifluoride coordination, enabling the straightforward generation of D–A molecules with strong absorption. Solution-processed solar cells based on these complexes PC61BM showed PCE 1.13%.
This work unravels the intricate relationship between non-fullerene acceptor material surface energy and nanostructure formation in organic nanoparticle colloids.