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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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Horwat, David
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 2024Influence of chemistry and topography on the wettability of copper
- 2024Rapid ellipsometric imaging characterization of alloy and nanocomposite films with an articificial neural network
- 2024High quality ZnMgAlO thin films by ultrasonic spray pyrolysis: tuning of optoelectronic properties for use as TCO, window layer, and buffer layer in all-oxide solar cellscitations
- 2024ZnMgO Thin Films by Ultrasonic Spray Pyrolysis: Modulation of Optical and Electrical Properties by Post‐annealing and Magnesium Compositioncitations
- 2023Nanostructured Zr-Cu metallic glass thin films with tailored electrical and optical propertiescitations
- 2023Development of a two-step process based on ultrasonic spray pyrolysis to optimize optical and electrical properties of ZnMgAlO
- 2022Tuning the photoluminescence spectral properties of Ce and Sm co-doped YAG ceramic for optical applicationscitations
- 2022Rapid ellipsometric determination and mapping of alloy stoichiometry with a neural networkcitations
- 2022One-Step Formation of Plasmonic Cu Nanodomains in p-Type Cu 2 O Matrix Films for Enhanced Photoconversion of n-ZnO/p-Cu 2 O Heterojunctionscitations
- 2021Influence of magnesium doping on microstructure, optical and photocatalytic activity of zinc oxide thin films synthesis by sol–gel routecitations
- 2021Composition-driven transition from amorphous to crystalline films enables bottom-up design of functional surfacescitations
- 2021Blue emission and twin structure of p-type copper iodide thin filmscitations
- 2021Growth kinetics and origin of residual stress of two-phase crystalline-amorphous nanostructured filmscitations
- 2021Effect of the precursor concentration on structural properties of ZnO thin films by ultrasonic spray pyrolysis
- 2021Elaboration of high-transparency ZnO thin films by ultrasonic spray pyrolysis with fast growth ratecitations
- 2019Ultraviolet to infrared downshifting in Ce and Yb co-doped aluminum oxynitride thin films
- 2019Optimization of the performances of textured segmented solar cells: achievements and challenges
- 2018Local structure and point defects-dependent Area-Selective Atomic Layer Deposition Approach for Facile Synthesis of p-Cu₂O/n-ZnO Segmented Nano-junctionscitations
- 2018Ultraviolet optical excitation of near infrared emission of Yb-doped crystalline aluminum oxynitride thin filmscitations
- 2018Local Structure and Point-Defect-Dependent Area-Selective Atomic Layer Deposition Approach for Facile Synthesis of p-Cu2O/n-ZnO Segmented Nanojunctionscitations
- 2018From Blue to White luminescence in Cerium-doped Aluminum Oxynitride: Electronic Structure and Local Chemistry Perspectivescitations
- 2018Local structure and point defects-dependent Area-Selective Atomic Layer Deposition Approach for Facile Synthesis of p-Cu 2 O/n-ZnO Segmented Nano-junctionscitations
- 2017Controlling refractive index in AlN films by texture and crystallinity manipulationcitations
- 2017Bacterial adhesion on biomedical surfaces covered by yttria stabilized zirconiacitations
- 2017Strong room-temperature blue emission from rapid-thermal annealed cerium-doped aluminum (oxy)nitride thin filmscitations
- 2016Local Structure-Driven Localized Surface Plasmon Absorption and Enhanced Photoluminescence in ZnO-Au Thin Filmscitations
- 2016Bacterial adhesion on biomedical surfaces covered by yttria stabilized zirconiacitations
- 2015Tuning the structure and preferred orientation in reactively sputtered copper oxide thin filmscitations
- 2014Probing temperature-induced ordering in supersaturated Ti-1 (-) xAlxN coatings by electronic structurecitations
- 2014Transmittance enhancement and optical band gap widening of Cu2O thin films after air annealingcitations
- 2014Controlling the preferred orientation in sputter-deposited Cu2O thin films: Influence of the initial growth stage and homoepitaxial growth mechanismcitations
- 2014Electrochemical activation of Au nanoparticles for the selective partial oxidation of methanolcitations
- 2014Local modification of the microstructure and electrical properties of multifunctional Au-YSZ nanocomposite thin films by laser interference patterningcitations
- 2012Influence of laser interference patterning on microstructure and friction behavior of gold/yttria-stabilized zirconia nanocomposite thin filmscitations
Places of action
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document
Effect of the precursor concentration on structural properties of ZnO thin films by ultrasonic spray pyrolysis
Abstract
All-oxide photovoltaics is a new and very promising technology for low cost and efficient solar cells using earth-abundant and environmentally compatible materials. To match the requirements of this technology, beyond the optimization of the absorber layer, it is crucial to elaborate window and transport layers with excellent optical and structural properties in a wide range of thickness. Among the oxide materials, zinc oxide is a key material for the realization of these layers in the targeted all-oxide solar cells. Beside the low toxicity and abundance of ZnO, the reduction of the environmental footprint of photovoltaic technology could benefit from the low energy and low precursor consumption of the ultrasonic spray pyrolysis (USP) process. In addition to the environmental aspects, the USP process combines many advantages compared to conventional methods such as low-cost and large-scale production capability. The potential for elaboration of thin films of suitable structural and optical properties of this process combined with the previously mentioned advantages makes it of high interest for the future of photovoltaics. To date, the optical and structural properties of ZnO elaborated by USP have not been fully investigated with respect to the precursor solution concentration, which could have a strong impact on these properties and thus on the performances of the solar cell. ZnO thin films were deposited using the USP process after a precise optimization of the main growth conditions, namely the substrate temperature, spray pressure, nozzle speed and precursor solution flux, according to a specific design of experiment. ZnO films were confirmed to be conductive by showing resistivity values in the order of 1 Ω.cm. For this study, we used X-ray diffraction (XRD) and Raman spectroscopy to analyze the crystal structure, orientation and texture coefficient. Our results show that the preferential orientation can be controlled to be either (002) or (100) by adjusting the precursor solution concentration. On the one hand, the precise control of the orientation allows to better control the optical properties, that are crucial in our application, and, on the other hand, limit the defects at the heterointerface. The morphological properties were studied using atomic force microscopy and were correlated to the structural properties of the ZnO thin films. For instance, high consistency was evidenced between the AFM measured grain size and the XRD measured crystallite size. Finally, the optical properties were studied from UV/visible transmittance spectroscopy. The deposited ZnO films exhibit high transmittance above 90 % for the whole concentration range of the precursor solution with a maximum as high as 95 %. The resulting optical and structural properties could benefit to the performances of all-oxide solar cells deposited by USP.