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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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Kirchartz, Thomas
Forschungszentrum Jülich
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024High‐Bandgap Perovskites for Efficient Indoor Light Harvestingcitations
- 2023Characterizing the influence of charge extraction layers on the performance of triple‐cation perovskite solar cellscitations
- 2022Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cellscitations
- 2021Comment on “Resolving spatial and energetic distributions of trap states in metal halide perovskite solar cells”citations
- 2021Pathways toward 30% Efficient Single‐Junction Perovskite Solar Cells and the Role of Mobile Ionscitations
- 2021Roadmap on organic-inorganic hybrid perovskite semiconductors and devicescitations
- 2021Pathways toward 30% efficient single-junction perovskite solar cells and the role of mobile ionscitations
- 2020Photoluminescence-based characterization of halide perovskites for photovoltaicscitations
- 2020Femto- to Microsecond Dynamics of Excited Electrons in a Quadruple Cation Perovskitecitations
- 2020Femto- to Microsecond Dynamics of Excited Electrons in a Quadruple Cation Perovskitecitations
- 2020How To Quantify the Efficiency Potential of Neat Perovskite Films: Perovskite Semiconductors with an Implied Efficiency Exceeding 28%citations
- 2019Charge-Carrier Recombination in Halide Perovskitescitations
- 2019Charge-Carrier Recombination in Halide Perovskites.
- 2019The impact of energy alignment and interfacial recombination on the internal and external open-circuit voltage of perovskite solar cellscitations
- 2019Highly Compact TiO<sub>2</sub> Films by Spray Pyrolysis and Application in Perovskite Solar Cellscitations
- 2019Fermi-level pinning in methylammonium lead iodide perovskitescitations
- 2018Spin-coated planar Sb<sub>2</sub>S<sub>3</sub> hybrid solar cells approaching 5% efficiencycitations
- 2016Physical aspects of ferroelectric semiconductors for photovoltaic solar energy conversioncitations
- 2016Classification of solar cells according to mechanisms of charge separation and charge collectioncitations
- 2013Influence of crystallinity and energetics on charge separation in polymer–inorganic nanocomposite films for solar cellscitations
Places of action
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article
Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cells
Abstract
Electron transporting layers facilitating electron extraction and suppressing hole recombination at the cathode are crucial components in any thin-film solar cell geometry, including that of metal–halide perovskite solar cells. Amorphous tantalum oxide (Ta2O5) deposited by spin coating was explored as an electron transport material for perovskite solar cells, achieving power conversion efficiency (PCE) up to ~14%. Ultraviolet photoelectron spectroscopy (UPS) measurements revealed that the extraction of photogenerated electrons is facilitated due to proper alignment of bandgap energies. Steady-state photoluminescence spectroscopy (PL) verified efficient charge transport from perovskite absorber film to thin Ta2O5 layer. Our findings suggest that tantalum oxide as an n-type semiconductor with a calculated carrier density of ~7 × 1018/cm3 in amorphous Ta2O5 films, is a potentially competitive candidate for an electron transport material in perovskite solar cells.