| 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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Protesescu, Loredana
University of Groningen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Structural and optical control through anion and cation exchange processes for Sn-halide perovskite nanostructurescitations
- 2024Understanding the Surface Chemistry of SnO 2 Nanoparticles for High Performance and Stable Organic Solar Cellscitations
- 2024Blade-coated perovskite nanoplatelet polymer composites for sky-blue light-emitting diodescitations
- 2024Growth mechanism of oleylammonium-based tin and lead bromide perovskite nanostructurescitations
- 2024Air-Stable Thin Films of Tin Halide Perovskite Nanocrystals by Polymers and Al 2 O 3 Encapsulationcitations
- 2024Understanding the Surface Chemistry of SnO2 Nanoparticles for High Performance and Stable Organic Solar Cellscitations
- 2024Metal-Solvent Complex Formation at the Surface of InP Colloidal Quantum Dotscitations
- 2023Nickel Boride (Ni x B) Nanocrystals:From Solid-State Synthesis to Highly Colloidally Stable Inkscitations
- 2023Nickel Boride (NixB) Nanocrystalscitations
- 2020Exciton-ligand interactions in PbS quantum dots capped with metal chalcogenidescitations
- 2018Size-dependent fault-driven relaxation and faceting in zincblende CdSe colloidal quantum dotscitations
- 2018Exploration of near-infrared-emissive colloidal multinary lead halide perovskite nanocrystals using an automated microfluidic platformcitations
- 2017Long-lived hot carriers in formamidinium lead iodide nanocrystalscitations
- 2017Properties and potential optoelectronic applications of lead halide perovskite nanocrystalscitations
- 2016Single cesium lead halide perovskite nanocrystals at low temperature: fast single-photon emission, reduced blinking, and exciton fine structurecitations
- 2016Synthesis of cesium lead halide perovskite nanocrystals in a droplet-based microfluidic platform: fast parametric space mappingcitations
- 2016Harnessing defect-tolerance at the nanoscale: highly luminescent lead halide perovskite nanocrystals in mesoporous silica matrixescitations
- 2015Random Lasing with Systematic Threshold Behavior in Films of CdSe/CdS Core/Thick-Shell Colloidal Quantum Dotscitations
- 2015Nanocrystals of cesium lead halide perovskites (CsPbX 3 , X = Cl, Br, and I): novel optoelectronic materials showing bright emission with wide color gamutcitations
- 2015Low-threshold amplified spontaneous emission and lasing from colloidal nanocrystals of caesium lead halide perovskitescitations
- 2015Fast anion-exchange in highly luminescent nanocrystals of cesium lead halide perovskites (CsPbX 3 , X = Cl, Br, I)citations
- 2015Opto-electronics of PbS quantum dot and narrow bandgap polymer blendscitations
- 2015Low-threshold amplified spontaneous emission and lasing from colloidal nanocrystals of caesium lead halide perovskites (vol 6, 8056, 2015)citations
- 2015Nanocrystals of cesium lead halide perovskites (CsPbX3, X=Cl, Br, and I):novel optoelectronic materials showing bright emission with wide color gamutcitations
- 2014Surface functionalization of semiconductor and oxide nanocrystals with small inorganic oxoanions (PO 4 3– , MoO 4 2– ) and polyoxometalate ligandscitations
- 2014High Infrared Photoconductivity in Films of Arsenic-Sulfide-Encapsulated Lead-Sulfide Nanocrystalscitations
Places of action
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article
Understanding the Surface Chemistry of SnO2 Nanoparticles for High Performance and Stable Organic Solar Cells
Abstract
<p>In organic solar cells, the interfaces between the photoactive layer and the transport layers are critical in determining not only the efficiency but also their stability. When solution-processed metal oxides are employed as the electron transport layer, the presence of surface defects can downgrade the charge extraction, lowering the photovoltaic parameters. Thus, understanding the origin of these defects is essential to prevent their detrimental effects. Herein, it is shown that a widely reported and commercially available colloidal SnO<sub>2</sub> dispersion leads to suboptimal interfaces with the organic layer, as evidenced by the s-shaped J–V curves and poor stability. By investigating the SnO<sub>2</sub> surface chemistry, the presence of potassium ions as stabilizing ligands is identified. By removing them with a simple washing with deionized water, the s-shape is removed and the short-circuit current is improved. It is tested for two prototypical blends, TPD-3F:IT-4F and PM6:L8:BO, and for both the power conversion efficiency is improved up to 12.82% and 16.26%, from 11.06% and 15.17% obtained with the pristine SnO<sub>2</sub>, respectively. More strikingly, the stability is strongly correlated with the surface ions concentration, and these improved devices maintain ≈87% and ≈85% of their initial efficiency after 100 h of illumination for TPD-3F:IT-4F and PM6:L8:BO, respectively.</p>