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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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Ahmadi, Majid
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024Giant electrostriction-like response from defective non-ferroelectric epitaxial BaTiO3 integrated on Si (100)citations
- 2024Strong Substrate Influence on Atomic Structure and Properties of Epitaxial VO 2 Thin Filmscitations
- 2024Strong substrate influence on atomic structure and properties of epitaxial VO2 thin filmscitations
- 2024Domains with Varying Conductance in Tensile Strained SrMnO3 Thin Films Using Out-of-Plane Electric Fieldscitations
- 2024Domains with Varying Conductance in Tensile Strained SrMnO 3 Thin Films Using Out-of-Plane Electric Fieldscitations
- 2024Growth mechanism of oleylammonium-based tin and lead bromide perovskite nanostructurescitations
- 2024Giant electrostriction-like response from defective non-ferroelectric epitaxial BaTiO 3 integrated on Si (100)citations
- 2024Metal-Solvent Complex Formation at the Surface of InP Colloidal Quantum Dotscitations
- 2023Strong substrate influence on atomic structure and properties of epitaxial VO2 thin filmscitations
- 2023Van der Waals Epitaxy of Pulsed Laser Deposited Antimony Thin Films on Lattice-matched and Amorphous Substratescitations
- 2023Van der Waals Epitaxy of Pulsed Laser Deposited Antimony Thin Films on Lattice-matched and Amorphous Substratescitations
- 2023Effects of Intermixing in Sb2Te3/Ge1+xTe Multilayers on the Thermoelectric Power Factorcitations
- 2023Nickel Boride (Ni x B) Nanocrystals:From Solid-State Synthesis to Highly Colloidally Stable Inkscitations
- 2023Nickel Boride (NixB) Nanocrystalscitations
- 2022Phase Separation in Ge-Rich GeSbTe at Different Length Scales: Melt-Quenched Bulk versus Annealed Thin Filmscitations
- 2021Editors' Choice - Dealloying-Driven Cerium Precipitation on Intermetallic Particles in Aerospace Aluminium Alloyscitations
- 2020Locally Condensed Water as a Solution for In Situ Wet Corrosion Electron Microscopycitations
- 2020Infrared absorbance of vertically-aligned multi-walled CNT forest as a function of synthesis temperature and timecitations
- 2020How Mn/Ni Ordering Controls Electrochemical Performance in High-Voltage Spinel LiNi0.44Mn1.56O4 with Fixed Oxygen Contentcitations
- 2020How Mn/Ni Ordering Controls Electrochemical Performance in High-Voltage Spinel LiNi0.44Mn1.56O4with Fixed Oxygen Contentcitations
- 2019Growth of multi-layered graphene on molybdenum catalyst by solid phase reaction with amorphous carboncitations
- 2014Highly protective performance of water-based epoxy coating loaded with self-doped nanopolyaniline synthesized under supercritical CO2 conditioncitations
- 2014Surface energy engineering for tunable wettability through controlled synthesis of MoS2citations
- 2013Large scale synthesis of single-crystal and polycrystalline boron nitride nanosheetscitations
- 2013Synthesis, characterization and understanding of the mechanisms of electroplating of nanocrystalline-amorphous nickel-tungsten alloys using in situ electrochemical impedance spectroscopycitations
- 2013Single-step route to hierarchical flower-like carbon nanotube clusters decorated with ultrananocrystalline diamondcitations
- 2012Water-soluble derivatives of octanuclear iron-oxido-pyrazolato complexes - An experimental and computational studycitations
- 2012Single-step route to diamond-nanotube compositecitations
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article
Metal-Solvent Complex Formation at the Surface of InP Colloidal Quantum Dots
Abstract
The surface chemistry of colloidal semiconductor nanocrystals (QDs) profoundly influences their physical and chemical attributes. The insulating organic shell ensuring colloidal stability impedes charge transfer, thus limiting optoelectronic applications. Exchanging these ligands with shorter inorganic ones enhances charge mobility and stability, which is pivotal for using these materials as active layers for LEDs, photodetectors, and transistors. Among those, InP QDs also serve as a model for surface chemistry investigations. This study focuses on group III metal salts as inorganic ligands for InP QDs. We explored the ligand exchange mechanism when metal halide, nitrate, and perchlorate salts of group III (Al, In Ga), common Lewis acids, are used as ligands for the conductive inks. Moreover, we compared the exchange mechanism for two starting model systems: InP QDs capped with myristate and oleylamine as X- and L-type native organic ligands, respectively. We found that all metal halide, nitrate, and perchlorate salts dissolved in polar solvents (such as n-methylformamide, dimethylformamide, dimethyl sulfoxide, H 2 O) with various polarity formed metal-solvent complex cations [M(Solvent) 6 ] 3+ (e.g., [Al(MFA) 6 ] 3+ , [Ga(MFA) 6 ] 3+ , [In(MFA) 6 ] 3+ ), which passivated the surface of InP QDs after the removal of the initial organic ligand. All metal halide capped InP/[M(Solvent) 6 ] 3+ QDs show excellent colloidal stability in polar solvents with high dielectric constant even after 6 months in concentrations up to 74 mg/mL. Our findings demonstrate the dominance of dissociation-complexation mechanisms in polar solvents, ensuring colloidal stability. This comprehensive understanding of InP QD surface chemistry paves the way for exploring more complex QD systems such as InAs and InSb QDs.