| 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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Tao, Shuxia
Eindhoven University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (35/35 displayed)
- 2024Probing the Reactivity of ZnO with Perovskite Precursorscitations
- 2024Temperature-Dependent Chirality in Halide Perovskitescitations
- 2023Unraveling the Broadband Emission in Mixed Tin-Lead Layered Perovskitescitations
- 2023Unraveling the Broadband Emission in Mixed Tin-Lead Layered Perovskitescitations
- 2023In Situ IR SpectroscopyStudies of AtomicLayer-Deposited SnO2 on Formamidinium-Based Lead Halide Perovskitecitations
- 2023In Situ IR SpectroscopyStudies of AtomicLayer-Deposited SnO2 on Formamidinium-Based Lead Halide Perovskitecitations
- 2023The role of sulfur in sulfur-doped copper(I) iodide p-type transparent conductorscitations
- 2023Calculating the Circular Dichroism of Chiral Halide Perovskites:A Tight-Binding Approachcitations
- 2023Effect of the Precursor Chemistry on the Crystallization of Triple Cation Mixed Halide Perovskitescitations
- 2023Calculating the Circular Dichroism of Chiral Halide Perovskitescitations
- 2022Decomposition of Organic Perovskite Precursors on MoO 3 :Role of Halogen and Surface Defectscitations
- 2022Decomposition of Organic Perovskite Precursors on MoO3citations
- 2022What Happens at Surfaces and Grain Boundaries of Halide Perovskites:Insights from Reactive Molecular Dynamics Simulations of CsPbI 3citations
- 2022Transferable Classical Force Field for Pure and Mixed Metal Halide Perovskites Parameterized from First-Principlescitations
- 2022What Happens at Surfaces and Grain Boundaries of Halide Perovskitescitations
- 2021Efficient Computation of Structural and Electronic Properties of Halide Perovskites Using Density Functional Tight Bindingcitations
- 2021Atomistic Insights Into the Degradation of Inorganic Halide Perovskite CsPbI3citations
- 2021Stretchable AgX (X = Se, Te) for Efficient Thermoelectrics and Photovoltaicscitations
- 2021Atomistic Insights Into the Degradation of Inorganic Halide Perovskite CsPbI3:A Reactive Force Field Molecular Dynamics Studycitations
- 2021Efficient Computation of Structural and Electronic Properties of Halide Perovskites Using Density Functional Tight Binding:GFN1-xTB Methodcitations
- 2020Dopant site in indium-doped SrTiO3 photocatalystscitations
- 2020Dopant site in indium-doped SrTiO 3 photocatalystscitations
- 2020Efficient modelling of ion structure and dynamics in inorganic metal halide perovskitescitations
- 2019Absolute energy level positions in tin- and lead-based halide perovskitescitations
- 2019Efficient intraband hot carrier relaxation in Sn and Pb perovskite semiconductors mediated by strong electron-phonon couplingcitations
- 2018Efficient intraband hot carrier relaxation in the Perovskite semiconductor Cs1- xRbxSnI3 mediated by strong electron-phonon couplingcitations
- 2018Partially replacing Pb2+ by Mn2+ in hybrid metal halide perovskitescitations
- 2018Partially replacing Pb 2+ by Mn 2+ in hybrid metal halide perovskites:Structural and electronic propertiescitations
- 2018Cs1−xRbxSnI3 light harvesting semiconductors for perovskite photovoltaicscitations
- 2018Probing the occupied and unoccupied density of states of hybrid Perovskites
- 2018Cs 1-: X Rb x SnI 3 light harvesting semiconductors for perovskite photovoltaicscitations
- 2014Electron emission processes in photocathodes and dynodescitations
- 2011DFT studies of hydrogen storage properties of Mg0.75Ti0.25citations
- 2010Analysis of deformation twins and the partially dehydrogenated microstructure in nanocrystalline magnesium hydride (MgH2) powdercitations
- 2008Cubic MgH2 stabilized by alloying with transition metals : a density functional theory studycitations
Places of action
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article
In Situ IR SpectroscopyStudies of AtomicLayer-Deposited SnO2 on Formamidinium-Based Lead Halide Perovskite
Abstract
Perovskite photovoltaics has achieved conversion efficiencies of 26.0% by optimizing the optoelectronic properties of the absorber and its interfaces with charge transport layers (CTLs). However, commonly adopted organic CTLs can lead to parasitic absorption and device instability. Therefore, metal oxides like atomic layer-deposited (ALD) SnO2 in combination with fullerene-based electron transport layers have been introduced to enhance mechanical and thermal stability. Instead, when ALD SnO2 is directly processed on the absorber, i.e., without the fullerene layer, chemical modifications of the inorganic fraction of the perovskite occur, compromising the device performance. This study focuses on the organic fraction, particularly the formamidinium cation (FA+), in a CsFAPb(I,Br)3 perovskite. By employing in situ infrared spectroscopy, we investigate the impact of ALD processing on the perovskite, such as vacuum level, temperature, and exposure to half and full ALD cycles using tetrakis(dimethylamido)-Sn(IV) (TDMA-Sn) and H2O. We observe that exposing the absorber to vacuum conditions or water half-cycles has a negligible effect on the chemistry of the perovskite. However, prolonged exposure at 100 °C for 90 min results in a loss of 0.7% of the total formamidinium-related vibrational features compared to the pristine perovskite. Supported by density functional theory calculations, we speculate that FA+ deprotonates and that formamidine desorbs from the perovskite surface. Furthermore, the interaction between TDMA-Sn and FA+ induces more decomposition of the perovskite surface compared to vacuum, temperature, or H2O exposure. During the exposure to 10 ALD half-cycles of TDMA-Sn, 4% of the total FA+-related infrared features are lost compared to the pristine perovskite. Additionally, IR spectroscopy suggests the formation and trapping of sym-triazine, i.e., a decomposition product of FA+. These studies enable to decouple the effects occurring during direct ALD processing on the perovskite and highlight the crucial role of the Sn precursor in affecting the perovskite surface chemistry and compromising the device performance.