| 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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Liu, Maning
Lund University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 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
- 2024Halide Perovskites for Photoelectrochemical Water Splitting and 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
- 2023Water-resistant perovskite-inspired copper/silver pnictohalide nanocrystals for photoelectrochemical water splittingcitations
- 2023Water-resistant perovskite-inspired copper/silver pnictohalide nanocrystals for photoelectrochemical water splittingcitations
- 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
- 2023Antimony‐Bismuth Alloying: The Key to a Major Boost in the Efficiency of Lead‐Free Perovskite‐Inspired Photovoltaicscitations
- 2023Antimony-Bismuth Alloyingcitations
- 2022Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cellscitations
- 2022Photo-Induced Charge Carrier Dynamics of Metal Halide Perovskite
- 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
- 2020Tuning halide perovskite energy levelscitations
- 2020The Performance-Determining Role of Lewis Bases in Dye-Sensitized Solar Cells Employing Copper-Bisphenanthroline Redox Mediatorscitations
- 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
- 2018Identifying an Optimum Perovskite Solar Cell Structure by Kinetic Analysiscitations
- 2018Excitation wavelength dependent interfacial charge transfer dynamics in a CH3NH3PbI3 perovskite filmcitations
- 2017Fluorene-Thiophene Copolymer Wire on TiO2citations
Places of action
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article
The Performance-Determining Role of Lewis Bases in Dye-Sensitized Solar Cells Employing Copper-Bisphenanthroline Redox Mediators
Abstract
<p>Copper redox mediators have enabled open-circuit voltages (V<sub>OC</sub>) of over 1.0 V in dye-sensitized solar cells (DSCs) and have helped to establish DSCs as the most promising solar cell technology in low-light conditions. The addition of additives such as 4-tert-butylpyridine (tBP) to these electrolytes has helped in achieving high solar cell performances. However, emerging evidence suggests that tBP coordinates to the Cu(II) species and limits the performance of these electrolytes. To date, the implications of this coordination are poorly understood. Here, the importance of Lewis base additives for the successful implementation of copper complexes as redox mediators in DSCs is demonstrated. Two redox couples, [Cu(dmp)<sub>2</sub>]<sup>+/2+</sup> and [Cu(dpp)<sub>2</sub>]<sup>+/2+</sup> (with dmp = 2,9-dimethyl-1,10-phenanthroline and dpp = 2,9-diphenyl-1,10-phenanthroline) in combination with three different Lewis bases, TFMP (4-(trifluoromethyl)pyridine), tBP, and NMBI (1-methyl-benzimidazole), are considered. Through single-crystal X-ray diffraction analysis, absorption, and <sup>1</sup>H-NMR spectroscopies, the coordination of Lewis bases to the Cu(II) centers are studied. This coordination efficiently suppresses recombination losses and is crucial for high performing solar cells. If, however, the coordination involves a ligand exchange, as is the case for [Cu(dpp)<sub>2</sub>]<sup>+/2+</sup>, the redox mediator regeneration at the counter electrode is significantly retarded and the solar cells show current limitations.</p>