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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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Bouttemy, Muriel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024Fine tuning of Nb-incorporated TiO2 thin films by atomic layer deposition and application as efficient electron transport layer in perovskite solar cellscitations
- 2024Fine tuning of Nb-incorporated TiO2 thin films by atomic layer deposition and application as efficient electron transport layer in perovskite solar cellscitations
- 2024Doped SnO 2 thin films fabricated at low temperature by atomic layer deposition with a precise incorporation of niobium atomscitations
- 2023Influence of X-Ray Irradiation During Photoemission Studies on Halide Perovskite-Based Devicescitations
- 2023Elucidating Interfacial Limitations Induced by Tin Oxide Electron Selective Layer Grown by Atomic Layer Deposition in N−I−P Perovskite-Based Solar Cellscitations
- 2023The Impact of X‐Ray Radiation on Chemical and Optical Properties of Triple‐Cation Lead Halide Perovskite: from the Surface to the Bulkcitations
- 2022In – depth chemical and optoelectronic analysis of triple-cation perovskite thin films by combining XPS profiling and PL Imagingcitations
- 2022(Invited, Digital Presentation) Outstanding Contributions of Liquid Ammonia on III-V Semiconductors (Photo)-Electrochemistry
- 2021Chemical Passivation with Phosphonic Acid Derivatives of ZnO Deposited by Atomic Layer Deposition and Its Influence on the Halide Perovskite Interfacecitations
- 2021Carrier gradients and the role of charge selective contacts in lateral heterojunction all back contact perovskite solar cellscitations
- 2021In – depth chemical and optoelectronic analysis of triple-cation perovskite thin films by combining XPS profiling and PL Imagingcitations
- 2021The influence of relative humidity upon Cu(In,Ga)Se2 thin-film surface chemistry: an X-ray photoelectron spectroscopy studycitations
- 2020Light-Induced Passivation in Triple Cation Mixed Halide Perovskites: Interplay between Transport Properties and Surface Chemistrycitations
- 2019Laser ablation of n-PERT silicon solar cells for metallization issues: understanding the mechanism to enhance performances
- 2019Investigation of dielectric layers laser ablation mechanism on n-PERT silicon solar cells for (Ni) plating process: Laser impact on surface morphology, composition, electrical properties and metallization qualitycitations
- 2019Optimization of Ni/Cu Plating Process for Silicon Solar Cells through Understanding of Underlying Electrochemical Reaction Mechanisms
- 2019Cu depletion on Cu(In,Ga)Se2 surfaces investigated by chemical engineering: An x-ray photoelectron spectroscopy approachcitations
- 2018New insights on the chemistry of plasma-enhanced atomic layer deposition of indium oxysulfide thin films and their use as buffer layers in Cu(In,Ga)Se2 thin film solar cellcitations
- 2018Multitechnique investigation of sulfur phases in the corrosion product layers of iron corroded in long-term anoxic conditions: From micrometer to nanometer scale
- 2018New insights on the chemistry of plasma-enhanced atomic layer deposition of indium oxysulfide thin films and their use as buffer layers in Cu(In,Ga)Se 2 thin film solar cellcitations
- 2018The Evaluation of the Perturbations Induced By Ionic Bombardment on Surfaces: A Challengefor Interfacial Electrochemistry
- 2017The Role of Oxygen in the Degradation of Methylammonium Lead Trihalide Perovskite Photoactive Layers
- 2016Influence of iron corrosion on nuclear glass alteration processes: nanoscale investigations of the iron-containing phases
Places of action
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article
Cu depletion on Cu(In,Ga)Se2 surfaces investigated by chemical engineering: An x-ray photoelectron spectroscopy approach
Abstract
Photovoltaic cells based on CIGS [Cu(In,Ga)Se2] absorber technology are among the most efficient thin film solar cells and already an industrial reality. Room for improvement is still possible in the manufacturing process to approach the theoretical ultimate efficiency. This not only requires an optimal absorber material but also the control of the CIGS interface chemistry, especially at the front side with the buffer layer which represents one of the main challenges. In this paper, thanks to x-ray photoelectron spectroscopy (XPS) analysis, the CIGS surface chemical composition is studied after acid (HCl) and basic (KCN) samples dipping. Both are regularly employed to prepare CIGS surfaces. XPS monitoring of the surface composition evolution under air aging at an ambient atmosphere and over a period of 120 days is presented, bringing fundamental information about the surface oxidation trends. If the HCl treatment gives a remarkable deoxidation state for the CIGS surface, it also yields a slightly Se enriched surface indicating the presence of a Cu2–xSe binary side phase, which is totally removed, as expected, by the KCN process. The present comparative study based on intentional air aging of starting HCl and KCN treated surfaces sheds light on the reorganization mechanism of this I-III-VI quaternary compound toward oxidation of clean CIGS surfaces, in ambient conditions. The oxidation process occurs concomitantly with an Na migration toward the surface, with soda-lime glass at the back contact, acting as a nonlimiting supply, asking the question of a surface mechanistic correlation during the CIGS surface oxidation.Photovoltaic cells based on CIGS [Cu(In,Ga)Se2] absorber technology are among the most efficient thin film solar cells and already an industrial reality. Room for improvement is still possible in the manufacturing process to approach the theoretical ultimate efficiency. This not only requires an optimal absorber material but also the control of the CIGS interface chemistry, especially at the front side with the buffer layer which represents one of the main challenges. In this paper, thanks to x-ray photoelectron spectroscopy (XPS) analysis, the CIGS surface chemical composition is studied after acid (HCl) and basic (KCN) samples dipping. Both are regularly employed to prepare CIGS surfaces. XPS monitoring of the surface composition evolution under air aging at an ambient atmosphere and over a period of 120 days is presented, bringing fundamental information about the surface oxidation trends. If the HCl treatment gives a remarkable deoxidation state for the CIGS surface, it also yields a slightly Se enric...