A5004857382- Nanofabrication and Lithography Techniques
- Nanotechnology research and applications
- Quantum Dots Synthesis And Properties
- Analytical Chemistry and Sensors
- Advanced MEMS and NEMS Technologies
- Mechanical and Optical Resonators
- Laser-Ablation Synthesis of Nanoparticles
- TiO2 Photocatalysis and Solar Cells
- Graphene and Nanomaterials Applications
- Force Microscopy Techniques and Applications
- Nanowire Synthesis and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- Nanopore and Nanochannel Transport Studies
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Perovskite Materials and Applications
- Advanced biosensing and bioanalysis techniques
- Organic Electronics and Photovoltaics
- Nanoparticles: synthesis and applications
- Photonic and Optical Devices
- Advanced Photocatalysis Techniques
- Metal and Thin Film Mechanics
- Molecular Junctions and Nanostructures
- Supramolecular Self-Assembly in Materials
- Additive Manufacturing and 3D Printing Technologies
Institut de Chimie
2016-2018
Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé
2016-2018
Université de Strasbourg
2016-2018
Centre National de la Recherche Scientifique
2018
Universitat Autònoma de Barcelona
2018
Institut Català de Nanociència i Nanotecnologia
2010-2016
Consejo Superior de Investigaciones Científicas
2008-2015
Radboud University Nijmegen
2009
Transparent thin film electrodes made of vertically aligned nanocolumns TiO2 with well-controlled oblique angles were grown by physical vapor deposition at glancing incidence (PVD-GLAD). For an electrode thickness 500 nm, we report a 40% variation on solar cell efficiency (from 0.6% to 1.04%) when the angle was modified between 60° and 85°. thicker films higher surface area deposited optimal 70° zigzag morphology which confers high mechanical strength films. Using this topology, application...
Electrodes made of vertically-aligned ZnO nanorods (NRs) have been prepared and analyzed in dye sensitized solar cells (DSC). We report a ∼20% power conversion efficiency increase during the first hours cell testing at 1000 W m−2 (AM 1.5). The latter has attributed to physisorption/chemisorption N-719 on NRs induced by UV-light irradiation. were grown hydrothermal method for 6 h obtaining layer thickness about 1.8 μm. highest obtained was 0.69% after UV light irradiation (at 72 °C, 0.63 V,...
Abstract Exciton migration! Spectroscopic analyses and extensive molecular dynamics studies revealed a well‐defined 4 1 helix in which the perylene molecules (see figure) form four “helter‐skelter‐like” overlapping pathways along excitons electrons can rapidly migrate. magnified image We report on combined experimental computational investigation synthesis thorough characterization of structure perylene‐functionalized polyisocyanides. well defined “helter skelter‐like” The polymer scaffold...
Five different indium‐tin‐oxide free (ITO‐free) polymer solar cell architectures provided by four participating research institutions that all presented a laboratory performance sufficient for use in mobile and information communication technology (ICT) were evaluated based on photovoltaic lifetime tests according to the ISOS protocols. The comparison of device was performed using same active material (P3HT: PCBM) tested against an ITO‐based reference device. area 1 cm 2 rigid glass or...
A BODIPY dye grafted on TiO<sub>2</sub>NTs is fully characterized and applied in dye-sensitized solar cells showing a good performance.
Abstract Vertically aligned ZnO nanorods (NR) are prepared by two different syntheses methods and applied on polymer solar cells (PSCs). The electrodes work as the electron transport layer with P3HT:PCBM blend acting active material. Several organic solution conditions optimized: concentration, solvent, deposition speed. effect of NR electrode morphologies is analyzed cell performance characterized current–voltage curves IPCE analyses. photovoltaic was observed to be influenced many factors,...
Abstract With three models in commercial use, artificial retinas are the most concrete hope to restore sight blind patients, notably those affected with retinitis pigmentosa. However, present architectures costly produce, while restored visual acuity remains below legal threshold for blindness. Furthermore, complexity of current systems tethered application‐specific integrated circuits (asics) requires complex surgeries, risks complications and failures. In search new nanomaterials, it is...
Dye-sensitized solar cells based on vertically-aligned ZnO nanorod, were analyzed at different conditions. Stability tests showed an improvement conversion efficiency between ∼20% (1000 W/m2) and ∼50% (1800 W/m2). This behavior was ascribed to the physisorption/chemisorption of N-719 dye due UV light. Studies temperatures proved that performance can double when decreasing temperature from 72 ∘C room temperature. An increase decrease in FF observed light intensity is increased. IPCE analyses...
Innovative vertically aligned ZnO / In x S y nanorod (NR) electrodes were prepared by successive ion layer adsorption and reaction (SILAR) technique. The shell was deposited on top of NR two different lengths, ~1.6 μm ~3.2 μm. Two sulfur contents the with thicknesses analyzed. These fully characterized scanning electron microscopy (SEM), transmission (TEM), X-ray diffraction spectroscopy (XRD), Energy-dispersive x-ray (EDS), Infrared (FT-IR), photoelectron (XPS) ultraviolet photoemission...
Abstract Zinc oxide (ZnO) was dissolved in an aqueous solution of ammonia and hydrogen peroxide. According to XRD characterization, this precursor yielded crystalline zincoxide after evaporation thermal treatment at 90 °C for 2 h. The processability allowed ZnO deposition on cellulose paper, which is example a thermolabile substrate. Cellulose filter paper that impregnated with subsequently thermally treated h had nanostructured well adhered its surface. This composite material characterized...