Projecten per jaar
Persoonlijk profiel
Research profile
My research centers around studying the growth of ultra-thin films by atomic-layer deposition and their characterization using advanced (nonlinear) optical diagnostics with an emphasis on their defects and non-idealities.
Academic background
Currently I am focussing on the growth and characterization of 2D transition metal dichalcogenides (TMDs). This included the development of new ALD processes but also the further development of (advanced) diagnostics for these materials. Recently, I developed a new framework for texture characterization using Raman spectroscopy based upon new fundamental insight I obtained into the Raman response of nanocrystalline TMDs.
My PhD research encompassed mechanistic studies of the prototypical ALD processes for metal-oxide (thermal ALD of Al2O3) and for noble metal ALD (thermal ALD of Pt) using a new diagnostic: broadband sum-frequency generation (BB-SFG) spectroscopy. The surface chemistry during these processes was studied for the first time with this state-of-the-art technique which relies on the mixing of mid-IR and visible fs laser pulses. As such, SFG is a second-order nonlinear optical process making BB-SFG spectroscopy inherently surface sensitive. This property, combined with the all optical nature of BB-SFG, makes it ideally suited for in-situ studies of the surface chemistry. A purpose built setup was realized in the project and these BB-SFG studies revealed several key non-idealities in the growth mechanism of these well-studied prototypical ALD processes.
I also studied the surface chemistry of plasma-enhanced ALD of Al2O3 using ATR-FTIR spectroscopy at the Colorado School of Mines (CSM) and I worked on the characterization of the SiO2/Si and Al2O3/Si interface relevant for nano-electronic and photovoltaic devices with phase-sensitive second-harmonic generation (SHG) spectroscopy. In conjunction with probing the electronic structure of the interface, SHG can also reveal and quantify the presence of built-in charges near these interfaces which is a key property for device fabrication.
Expertise gerelateerd aan duurzame ontwikkelingsdoelstellingen van de VN
In 2015 stemden de VN-lidstaten in met 17 wereldwijde duurzame ontwikkelingsdoelstellingen (Sustainable Development Goals, SDG's) om armoede te beëindigen, de planeet te beschermen en voor iedereen welvaart te garanderen. Het werk van deze persoon draagt bij aan de volgende duurzame ontwikkelingsdoelstelling(en):
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Netwerk
Projecten
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3DAM
Kessels, W. M. M., Vandalon, V., van Bommel, C., Shirazi, M., Faraz, T. & Schulpen, J. J. P. M.
1/04/16 → 1/04/19
Project: Onderzoek direct
Onderzoeksoutput
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Common Precursors and Surface Mechanisms for Atomic Layer Deposition
Barry, S. T., Gordon, P. G. & Vandalon, V., 29 jan. 2022, (Geaccepteerd/In druk) Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier, 18 blz.Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Vermelding in encyclopedie / woordenboek › Academic › peer review
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Controlling transition metal atomic ordering in two-dimensional Mo1- xW xS2alloys
Schulpen, J. J. P. M., Verheijen, M. A., Kessels, W. M. M., Vandalon, V. & Bol, A. A., apr. 2022, In: 2D Materials. 9, 2, 025016.Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review
Open AccessBestand9 Downloads (Pure) -
Surface chemistry during Atomic Layer Deposition of Pt studied with vibrational sum-frequency generation
Vandalon, V., Mackus, A. J. M. & Kessels, W. M. M., 10 feb. 2022, In: Journal of Physical Chemistry C. 126, 5, blz. 2463-2474 12 blz.Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review
Open AccessBestand9 Downloads (Pure) -
Atmospheric-Pressure Plasma-Enhanced Spatial ALD of SiO2 Studied by Gas-Phase Infrared and Optical Emission Spectroscopy
Mione, M. A., Vandalon, V., Mameli, A., Kessels, W. M. M. & Roozeboom, F., 18 nov. 2021, In: Journal of Physical Chemistry C. 125, 45, blz. 24945-24957 13 blz.Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review
Open AccessBestand18 Downloads (Pure) -
Atomic insights into the oxygen incorporation in atomic layer deposited conductive nitrides and its mitigation by energetic ions
Karwal, S., Karasulu, B., Knoops, H. C. M., Vandalon, V., Kessels, W. M. M. & Creatore, M., 14 jun. 2021, In: Nanoscale. 13, 22, blz. 10092-10099 8 blz.Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review
Open AccessBestand1 Citaat (Scopus)12 Downloads (Pure)
Prijzen
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Student Award best oral presentation
Vandalon, Vincent (Ontvanger), 30 jun. 2015
Prijs: Anders › Werk, activiteit of publicatie gerelateerde prijzen (lifetime, best paper, poster etc.) › Wetenschappelijk
Scriptie
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Second-Harmonic Generation: spectroscopic phase and intensity study of the Si(100) interface with SiO2 and Al2O3 thin films
Auteur: Vandalon, V., 31 aug. 2011Begeleider: Terlinden, N. M. (Afstudeerdocent 1) & Kessels, W. M. M. (Afstudeerdocent 2)
Scriptie/Masterproef: Master
Bestand