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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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Odobel, Fabrice
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2024Electrochromic, surface-anchored metal–organic frameworks for stabilized silver nanowire flexible transparent electrodescitations
- 2022Push-pull phenoxazine-based sensitizers for p-type DSSCs: Effect of acceptor units on photovoltaic performancecitations
- 2021Zinc phthalocyanine absorbing in the near-infrared with application for transparent and colorless dye-sensitized solar cells ; Une phtalocyanine de zinc absorbant dans le proche infrarouge, application aux cellules solaires transparentes et incolores sensibilisées par un colorantcitations
- 2020Mutual influence of gold and silver nanoparticles on Tris-(2,2′bipyridine)-Ru(II) core complexes: Post-functionalization processes, optical and electrochemical investigationscitations
- 2020Mutual influence of gold and silver nanoparticles on Tris-(2,2′bipyridine)-Ru(II) core complexes: Post-functionalization processes, optical and electrochemical investigationscitations
- 2019Solar electricity and fuel production with perylene monoimide dye-sensitised TiO2 in watercitations
- 2019CuSCN nanowires as electrodes for p-type quantum dot sensitized solar cells : charge transfer dynamics and alumina passivationcitations
- 2019Improved efficiency of PbS quantum dot sensitized NiO photocathodes with naphthalene diimide electron acceptor bound to the surface of the nanocrystalscitations
- 2019Inverse Opal CuCrO2 Photocathodes for H2 Production Using Organic Dyes and a Molecular Ni Catalyst.
- 2019Inverse Opal CuCrO 2 Photocathodes for H 2 Production Using Organic Dyes and a Molecular Ni Catalystcitations
- 2019Solar electricity and fuel production with perylene monoimide dye-sensitised TiO2 in water.
- 2018Improved efficiency of PbS quantum dot sensitized NiO photocathodes with naphthalene diimide electron acceptor bound to the surface of the nanocrystalscitations
- 2018CuSCN nanowires as electrodes for p-type quantum dot sensitized solar cells:charge transfer dynamics and alumina passivationcitations
- 2017Engineering processes at the interface of p-semiconductor for enhancing the open circuit voltage in p-type dye-sensitized solar cellscitations
- 2016Synthesis of Ni-poor NiO nanoparticles for p-DSSC applicationscitations
- 2016Inorganic Molybdenum Clusters as Light-Harvester in All Inorganic Solar Cells: A Proof of Conceptcitations
- 2015Synthesis of Ni-poor NiO nanoparticles for DSSC-p applications
- 2014Impact of Mg Doping on Performances of CuGaO2 Based p-Type Dye-Sensitized Solar Cellscitations
- 2014Hole conductivity and acceptor density of p-type CuGaO2 nanoparticles determined by impedance spectroscopy: The effect of Mg dopingcitations
- 2013Synthesis and characterization of a novel nonlinear optical hyperbranched polymer containing a highly performing chromophorecitations
- 2013Hole conductivity and acceptor density of p-type CuGaO2 nanoparticles determined by impedance spectroscopy: The effect of Mg dopingcitations
- 2010Structure optimization of electro-optic polymer waveguides for low half-wave voltage modulatorscitations
- 2009Free Radical Copolymerization of a-Fluoroacrylates for Optical Materials: Synthesis and Characterizationcitations
- 2006Sensitized Hole Injection of Phosphorus Porphyrin into NiO: Toward New Photovoltaic Devicescitations
- 2006Polymer poling characterization using Second Harmonic Generation (SHG)citations
Places of action
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article
Improved efficiency of PbS quantum dot sensitized NiO photocathodes with naphthalene diimide electron acceptor bound to the surface of the nanocrystals
Abstract
Hybrid materials combining a wide bandgap metal oxide semiconductor, metal chalcogenide nanocrystals and molecular systems represent very attractive materials for fabricating devices with new function or improved photoelectrochemical performances. This study deals with sensitization of NiO, which is a p-type semiconductor, by quantum dots (QDs) of PbS with an average diameter of 3 nm. The PbS QDs were attached to the monocrystalline film of NiO by mercaptopropionic acid linker and were subsequently capped with methyl-pyridine naphthalene diimide (NDI) units to prepare quantum dot sensitized solar cells (p-QDSSCs) on NiO electrodes. Time-resolved photoluminescence measurements of the PbS emission were used to determine the rate constants for charge transfer from the PbS exciton to the NiO, cobalt based redox mediator and NDI. Notably, it was shown that NDI quenches the PbS exciton by electron transfer with a quite fast rate constant (6.9 x 10 7 s -1 ). The PbS QDs sensitized NiO films were finally used to fabricate solar cells with tris(4,4’-di tert -butyl-2,2’-bipyridine) cobalt(III/II) as redox mediator. It was observed that the presence of NDI on PbS improved the photovoltaic performance by 50% relative to that of cells without NDI, leading to a device with the following characteristics: Jsc = 5.75 mA/cm 2 , Voc = 226 mV, ff = 34% and PCE = 0.44%. This study demonstrates that photogalvanic processes can be a productive pathway to better performing sensitized p-type semiconductor for p-QDSSC. In other words, photoinduced electron transfer from the QDs towards the electrolyte rather than initial photoinduced charge injection into the p-type semiconductor can be a favorable operative mechanism in QD sensitized NiO films and might be exploited further for the construction of better performing solar cells or photocatalytic devices.