| 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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Engberg, Sara Lena Josefin
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2023Advances in the one-step synthesis of 2D and 3D sulfide materials grown by pulsed laser deposition assisted by a sulfur thermal crackercitations
- 2022Silver-substituted (Ag1-xCux)2ZnSnS4 solar cells from aprotic molecular inkscitations
- 2022Tuning the band gap of CdS in CZTS/CdS solar cells
- 2022The effect of soft-annealing on sputtered Cu2ZnSnS4 thin-film solar cellscitations
- 2022A facile strategy for the growth of high-quality tungsten disulfide crystals mediated by oxygen-deficient oxide precursorscitations
- 2022Solution-processed CZTS and its n-layers
- 2020Energy band alignment at the heterointerface between CdS and Ag-alloyed CZTScitations
- 2020Energy band alignment at the heterointerface between CdS and Ag-alloyed CZTScitations
- 2020Monolithic thin-film chalcogenide–silicon tandem solar cells enabled by a diffusion barriercitations
- 2020Persistent Double-Layer Formation in Kesterite Solar Cells: A Critical Reviewcitations
- 2020Persistent Double-Layer Formation in Kesterite Solar Cells: A Critical Reviewcitations
- 2019Thin films of CZTS and CZTO for solar cells produced by pulsed laser deposition
- 2019Thin films of CZTS and CZTO for solar cells produced by pulsed laser deposition
- 2018Liquid phase assisted grain growth in Cu2ZnSnS4 nanoparticle thin films by alkali element incorporationcitations
- 2017Investigation of Cu 2 ZnSnS 4 nanoparticles for thin-film solar cell applicationscitations
- 2017The effect of dopants on grain growth and PL in CZTS nanoparticle thin films for solar cell applications
- 2017Na-assisted grain growth in CZTS nanoparticle thin films for solar cell applications
- 2017Spray-coated ligand-free Cu2ZnSnS4 nanoparticle thin films
- 2017Investigation of Cu2ZnSnS4 nanoparticles for thin-film solar cell applicationscitations
- 2017Spray-coated Cu2ZnSnS4 thin films for large-scale photovoltaic applications
- 2016High frequency pulse anodising of magnetron sputtered Al–Zr and Al–Ti Coatingscitations
- 2016Cu2ZnSnS4 Nanoparticle Absorber Layers for Thin-Film Solar Cells
- 2016Synthesis of ligand-free CZTS nanoparticles via a facile hot injection routecitations
- 2015Optimized Packing Density of Large CZTS Nanoparticles Synthesized by Hot-injection for Thin Film Solar Cells.
- 2015Large CZTS Nanoparticles Synthesized by Hot-Injection for Thin Film Solar Cells.
- 2015Synthesis of large CZTSe nanoparticles through a two-step hot-injection methodcitations
- 2014Appearance of anodised aluminium: Effect of alloy composition and prior surface finishcitations
- 2014Annealing in sulfur of CZTS nanoparticles deposited through doctor blading
- 2014Study of Grain Growth of CZTS Nanoparticles Annealed in Sulfur Atmosphere
Places of action
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article
A facile strategy for the growth of high-quality tungsten disulfide crystals mediated by oxygen-deficient oxide precursors
Abstract
<p>Chemical vapor deposition (CVD) has been established as a versatile route for the large-scale synthesis of transition metal dichalcogenides, such as tungsten disulfide (WS<sub>2</sub>). Yet, the precursor composition's role on the CVD process remains largely unknown and remains to be explored. Here, we employ Pulsed Laser Deposition (PLD) in a two-stage approach to tune the oxygen content in the tungsten oxide (WO<sub>3−x</sub>) precursors and demonstrate the presence of oxygen vacancies in the oxide films leads to a more facile conversion from WO<sub>3−x</sub> to WS<sub>2</sub>. Using a joint study based on ab initio density functional theory (DFT) calculations and experimental observations, we unravel that the oxygen vacancies in WO<sub>3−x</sub> can serve as niches through which sulfur atoms enter the lattice and facilitate an efficient conversion into WS<sub>2</sub> crystals. By solely modulating the precursor stoichiometry, the photoluminescence emission of WS<sub>2</sub> crystals can be significantly enhanced. Atomic resolution scanning transmission electron microscopy imaging (STEM) reveals that tungsten vacancies are the dominant intrinsic defects in mono- and bilayers WS<sub>2</sub>. Moreover, bi- and multilayer WS<sub>2</sub> crystals derived from oxides with a high V<sub>0</sub> content exhibit dominant AA′/AB or AA(A…) stacking orientations. The atomic resolution images reveal local strain buildup in bilayer WS<sub>2</sub> due to competing effects of complex grain boundaries. Our study provides means to tune the precursor composition to control the lateral growth of TMDs while revealing insights into the different pathways for forming grain boundaries in bilayer WS<sub>2</sub></p>