| 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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Vivo, Paola
Tampere University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (46/46 displayed)
- 2024Lattice Engineering via Transition Metal Ions for Boosting Photoluminescence Quantum Yields of Lead-Free Layered Double Perovskite Nanocrystalscitations
- 2024Lattice Engineering via Transition Metal Ions for Boosting Photoluminescence Quantum Yields of Lead-Free Layered Double Perovskite Nanocrystalscitations
- 2024Lattice Engineering via Transition Metal Ions for Boosting Photoluminescence Quantum Yields of Lead-Free Layered Double Perovskite Nanocrystalscitations
- 2024Probing compositional engineering effects on lead-free perovskite-inspired nanocrystal thin films using correlative nonlinear optical microscopycitations
- 2024Surface-Engineered Cesium Lead Bromide Perovskite Nanocrystals for Enabling Photoreduction Activitycitations
- 2024Assessing the Environmental Impact of Pnictogen-based Perovskite-Inspired Materials for Indoor Photovoltaicscitations
- 2024Simplifying perovskite solar cell fabrication for materials testing : how to use unetched substrates with the aid of a three-dimensionally printed cell holder
- 2024Perovskite‐Inspired Cs₂AgBi₂I₉: A Promising Photovoltaic Absorber for Diverse Indoor Environmentscitations
- 2024Halide Perovskites for Photoelectrochemical Water Splitting and CO2 Reductioncitations
- 2024Synergistic metal halide perovskite@metal-organic framework hybrids for photocatalytic CO2 reductioncitations
- 2024Halide Engineering in Mixed Halide Perovskite-Inspired Cu2AgBiI6 for Solar Cells with Enhanced Performancecitations
- 2024Probing compositional engineering effects on lead-free perovskiteinspired nanocrystal thin films using correlative nonlinear optical microscopycitations
- 2023Introduction
- 2023Wide‐Bandgap Perovskite‐Inspired Materials: Defect‐Driven Challenges for High‐Performance Optoelectronicscitations
- 2023Water-resistant perovskite-inspired copper/silver pnictohalide nanocrystals for photoelectrochemical water splittingcitations
- 2023Water-resistant perovskite-inspired copper/silver pnictohalide nanocrystals for photoelectrochemical water splittingcitations
- 2023Wide-bandgap perovskite-inspired materials: defect-driven challenges for high-performance optoelectronicscitations
- 2023Antimony-Bismuth Alloying : The Key to a Major Boost in the Efficiency of Lead-Free Perovskite-Inspired Photovoltaicscitations
- 2023Triple A-Site Cation Mixing in 2D Perovskite-Inspired Antimony Halide Absorbers for Efficient Indoor Photovoltaicscitations
- 2023Triple A-Site Cation Mixing in 2D Perovskite-Inspired Antimony Halide Absorbers for Efficient Indoor Photovoltaicscitations
- 2023Lead-free perovskite-inspired semiconductors for indoor light-harvesting - the present and the futurecitations
- 2023Lead-free perovskite-inspired semiconductors for indoor light-harvesting - the present and the futurecitations
- 2023Screening Mixed-Metal Sn2M(III)Ch2X3 Chalcohalides for Photovoltaic Applicationscitations
- 2023Antimony‐Bismuth Alloying: The Key to a Major Boost in the Efficiency of Lead‐Free Perovskite‐Inspired Photovoltaicscitations
- 2023Antimony-Bismuth Alloyingcitations
- 2022Flexible Organic Photovoltaics with Star-Shaped Nonfullerene Acceptors End Capped with Indene Malononitrile and Barbiturate Derivativescitations
- 2021Tuning halide perovskite energy levelscitations
- 2021Tuning halide perovskite energy levelscitations
- 2021Fluorination of pyrene-based organic semiconductors enhances the performance of light emitting diodes and halide perovskite solar cellscitations
- 2021There is plenty of room at the topcitations
- 2020Monitoring Charge Carrier Diffusion across a Perovskite Film with Transient Absorption Spectroscopycitations
- 2020Femto- to Microsecond Dynamics of Excited Electrons in a Quadruple Cation Perovskitecitations
- 2020Femto- to Microsecond Dynamics of Excited Electrons in a Quadruple Cation Perovskitecitations
- 2020Tuning halide perovskite energy levelscitations
- 2020Fluorination of pyrene-based organic semiconductors enhances the performance of light emitting diodes and halide perovskite solar cellscitations
- 2020Fluorination of pyrene-based organic semiconductors enhances the performance of light emitting diodes and halide perovskite solar cellscitations
- 2020Investigation of well-defined pinholes in TiO 2 electron selective layers used in planar heterojunction perovskite solar cellscitations
- 2020Investigation of well-defined pinholes in TiO2 electron selective layers used in planar heterojunction perovskite solar cellscitations
- 2019Nano-structured TiO2 grown by low-temperature reactive sputtering for planar perovskite solar cellscitations
- 2019Refractive index change dominates the transient absorption response of metal halide perovskite thin films in the near infraredcitations
- 2019Highly Compact TiO<sub>2</sub> Films by Spray Pyrolysis and Application in Perovskite Solar Cellscitations
- 2019Eco-friendly and low-cost phenothiazine-based hole-transporting material for high performance perovskite solar cells
- 2017Impact of Film Thickness of Ultrathin Dip-Coated Compact TiO2 Layers on the Performance of Mesoscopic Perovskite Solar Cellscitations
- 2017Crystallisation-enhanced bulk hole mobility in phenothiazine-based organic semiconductorscitations
- 2017Tailored Fabrication of Transferable and Hollow Weblike Titanium Dioxide Structurescitations
- 2017Tailored Fabrication of Transferable and Hollow Weblike Titanium Dioxide Structurescitations
Places of action
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article
Impact of Film Thickness of Ultrathin Dip-Coated Compact TiO2 Layers on the Performance of Mesoscopic Perovskite Solar Cells
Abstract
<p>Uniform and pinhole-free electron-selective TiO<sub>2</sub> layers are of utmost importance for efficient perovskite solar cells. Here we used a scalable and low-cost dip-coating method to prepare uniform and ultrathin (5–50 nm) compact TiO<sub>2</sub> films on fluorine-doped tin oxide (FTO) glass substrates. The thickness of the film was tuned by changing the TiCl<sub>4</sub> precursor concentration. The formed TiO<sub>2</sub> follows the texture of the underlying FTO substrates, but at higher TiCl<sub>4</sub> concentrations, the surface roughness is substantially decreased. This change occurs at a film thickness close to 20–30 nm. A similar TiCl<sub>4</sub> concentration is needed to produce crystalline TiO<sub>2</sub> films. Furthermore, below this film thickness, the underlying FTO might be exposed resulting in pinholes in the compact TiO<sub>2</sub> layer. When integrated into mesoscopic perovskite solar cells there appears to be a similar critical compact TiO<sub>2</sub> layer thickness above which the devices perform more optimally. The power conversion efficiency was improved by more than 50% (from 5.5% to ∼8.6%) when inserting a compact TiO<sub>2</sub> layer. Devices without or with very thin compact TiO<sub>2</sub> layers display <i>J</i>–<i>V</i> curves with an “s-shaped” feature in the negative voltage range, which could be attributed to immobilized negative ions at the electron-extracting interface. A strong correlation between the magnitude of the s-shaped feature and the exposed FTO seen in the X-ray photoelectron spectroscopy measurements indicates that the s-shape is related to pinholes in the compact TiO<sub>2</sub> layer when it is too thin.</p>