| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Chen, H.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (48/48 displayed)
- 2024New insights into the character of austenite-ferrite boundaries in an additively manufactured duplex stainless steelcitations
- 2024402 Tb/s GMI data-rate OESCLU-band Transmissioncitations
- 2023Shear yielding and crazing in dry and wet amorphous PLA at body temperaturecitations
- 2023The effect of elastic and plastic strain on surface and intergranular oxidation of alloy 600 in simulated PWR primary watercitations
- 2023A 19% efficient and stable organic photovoltaic device enabled by a guest nonfullerene acceptor with fibril-like morphologycitations
- 2022Intergranular precipitation and chemical fluctuations in an additively manufactured 2205 duplex stainless steelcitations
- 2022Experimental characterisation and modelling of the strain rate dependent mechanical response of a filled thermo-reversible supramolecular polyurethanecitations
- 2022Characterization and modelling of bisphenol-a type epoxy polymer over a wide range of rates and temperaturescitations
- 2021Estimation of the mechanical properties of a transversely isotropic material from shear wave fields via artificial neural networks.citations
- 2021On the pitting corrosion of 2205 duplex stainless steel produced by laser powder bed fusion additive manufacturing in the as-built and post-processed conditionscitations
- 2021Microstructure-property gradients in Ni-based superalloy (Inconel 738) additively manufactured via electron beam powder bed fusioncitations
- 2021Lactone backbone density in rigid electron-deficient semiconducting polymers enabling high n-type organic thermoelectric performancecitations
- 2021Microstructural and chemical constitution of the oxide scale formed on a pesting-resistant Mo-Si-Ti alloycitations
- 2021Vibration fatigue analysis of circumferentially notched specimens under coupled multiaxial random vibration environmentscitations
- 2021Linking Glass‐Transition Behavior to Photophysical and Charge Transport Properties of High‐Mobility Conjugated Polymers
- 2020Microbiologically influenced stress corrosion cracking of cable bolts in underground mines
- 2020Linking Glass-Transition Behavior to Photophysical and Charge Transport Properties of High-Mobility Conjugated Polymers
- 2020A new strategy to intrinsically protect refractory metal based alloys at ultra high temperaturescitations
- 2020Application of linear viscoelastic continuum damage theory to the low and high strain rate response of thermoplastic polyurethanecitations
- 2020Effect of Y Additions on the Oxidation Behaviour of Novel Refractory High-Entropy Alloy NbMoCrTiAl at 1000 °C in Aircitations
- 2019Thermal Analysis and Production of As-Cast Al 7075/6060 Bilayer Billetscitations
- 2019Crystallographic ordering in a series of Al-containing refractory high entropy alloys Ta-Nb-Mo-Cr-Ti-Alcitations
- 2018Influence of the nanofiber chemistry and orientation of biodegradable poly(butylene succinate)-based scaffolds on osteoblast differentiation for bone tissue regenerationcitations
- 2018Effect of microalloying with silicon on high temperature oxidation resistance of novel refractory high-entropy alloy Ta-Mo-Cr-Ti-Alcitations
- 2018Contribution of Lattice Distortion to Solid Solution Strengthening in a Series of Refractory High Entropy Alloyscitations
- 2018A generic interface to reduce the efficiency-stability-cost gap of perovskite solar cellscitations
- 2018Genetic Variant of MYLK4 Gene and its Association with Growth Traits in Chinese Cattle.citations
- 2018Stress corrosion failure of cable bolts in underground mines
- 2018Peculiarities of deformation of CoCrFeMnNi at cryogenic temperaturescitations
- 2017A generic interface to reduce the efficiency-stability-cost gap of perovskite solar cellscitations
- 2017High-Temperature Oxidation Behavior of Refractory High-Entropy Alloys: Effect of Alloy Compositioncitations
- 2017High-performance direct conversion X-ray detectors based on sintered hybrid lead triiodide perovskite waferscitations
- 2017Dielectric and polarization studies of magnetoelectric coupling in non-relaxor Pb(Fe.sub.1/2./sub.Ta.sub.1/2./sub.)O.sub.3./sub. multiferroic ceramicscitations
- 2016Exploring the Limiting Open-Circuit Voltage and the Voltage Loss Mechanism in Planar CH<inf>3</inf>NH<inf>3</inf>PbBr<inf>3</inf> Perovskite Solar Cellscitations
- 2016Granular media-based tube press hardeningcitations
- 2016Microstructure and mechanical properties at elevated temperatures of a new Al-containing refractory high-entropy alloy Nb-Mo-Cr-Ti-Alcitations
- 2016High temperature oxidation behavior of an equimolar refractory metal-based alloy [Formula presented] with and without Si additioncitations
- 2016Perovskite solar cells fabricated using dicarboxylic fullerene derivativescitations
- 2016Microstructure Evolution in a New Refractory High-Entropy Alloy W-Mo-Cr-Ti-Alcitations
- 2016Photoinduced degradation of methylammonium lead triiodide perovskite semiconductorscitations
- 2016Extending the environmental lifetime of unpackaged perovskite solar cells through interfacial designcitations
- 2016Overcoming the Thermal Instability of Efficient Polymer Solar Cells by Employing Novel Fullerene-Based Acceptorscitations
- 2015Construction of a photocatalytic de-polluting field site in the Leopold II tunnel in Brusselscitations
- 2015Construction of a photocatalytic de-polluting field site in the Leopold II tunnel in Brusselscitations
- 2013A multi-technique characterization of electroless gold contacts on single crystal CdZnTe radiation detectorscitations
- 2012Self-encapsulated hollow microstructures formed by electric field-assisted capillaritycitations
- 2010Aggregation of zinc oxide nanoparticles: From non-aqueous dispersions to composites used as photoactive layers in hybrid solar cellscitations
- 2007Quasivertical line in the phase diagram of single crystals of Pb Mg1 3 Nb2 3 O3 -x PbTiO3 (x=0.00, 0.06, 0.13, and 0.24) with a giant piezoelectric effectcitations
Places of action
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article
Aggregation of zinc oxide nanoparticles: From non-aqueous dispersions to composites used as photoactive layers in hybrid solar cells
Abstract
Hybrid solar cells are third-generation solar cells that are colloidal in nature. The composites used as photoactive layers within hybrid solar cells comprise conjugated polymers and inorganic semiconductor nanoparticles (e.g., nanocrystals and nanorods). The composites are usually prepared by spin casting non-aqueous dispersions consisting of polymer, nanoparticles and a co-solvent blend. The factors governing colloidal stability of the dispersions used for composite preparation have not been reported in detail. Here, the factors governing the stability of non-aqueous ZnO nanocrystal and nanorod dispersions as well as the relationship between dispersion stability and the extents of nanoparticle aggregation within model composites are studied. The polymers used are poly[[(2-methyl-4-methoxyphenyl)imino]-9,9-di-(2′-ethylhexyl)-fluorene-2,7-diyl] (PTAA) and poly[2,6-(4,4-bis-(2-ethyhexyl)-4H-cyclopenta [2,1-b;3,4-b′]-dithiophene)-alt-4,7-(2,1,3-benzo thiadiazole)] (PCPDTBT). FTIR in conjunction with thermogravimetric analysis data showed that up to 30% of the surfaces for the as-prepared ZnO nanocrystals and nanorods were occupied by acetate ligands. 1-Propylamine was found to form covalent coordinate bonds with ZnO and this contributes the ability of this co-solvent to promote enhanced ZnO dispersion stability. The morphologies of the composites were investigated using optical microscopy, AFM and TEM. A strong link was found between colloidal stability of the parent ZnO dispersions, extent of nanoparticle aggregation within the composites and pKa for the conjugate acid of the co-solvent. Electrostatic interactions did not control ZnO dispersion stability or composite morphology. Extensive nanometer-scale nanoparticle aggregation was evident within the composites. This was attributed to incompatibility between the polymer and (ligand covered) ZnO nanoparticles. Strategies for reducing uncontrolled nanoparticle aggregation are suggested. © 2010 Elsevier Inc. All rights reserved.