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Moehle, C.M. (author), Ke, C.T. (author), Wang, Q. (author), Thomas, C. (author), Xiao, D. (author), Karwal, S. (author), Lodari, M. (author), van de Kerkhof, V. (author), Termaat, R. (author), Gardner, G.C. (author), Scappucci, G. (author), Manfra, M.J. (author), Goswami, S. (author)Topological superconductivity can be engineered in semiconductors with strong spin-orbit interaction coupled to a superconductor. Experimental advances in this field have often been triggered by the development of new hybrid material systems. Among these, two-dimensional electron gases (2DEGs) are of particular interest due to their inherent...article 2021
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Kulesh, I. (author), Ke, C.T. (author), Thomas, C. (author), Karwal, S. (author), Moehle, C.M. (author), Metti, S. (author), Kallaher, R. (author), Gardner, G.C. (author), Manfra, M.J. (author), Goswami, S. (author)Indium-antimonide (InSb) two-dimensional electron gases (2DEGs) have a unique combination of material properties: high electron mobility, a strong spin-orbit interaction, a large Landé g factor, and a small effective mass. This makes them an attractive platform to explore a variety of mesoscopic phenomena ranging from spintronics to topological...article 2020
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Karwal, S. (author), Verheijen, M.A. (author), Arts, K. (author), Faraz, T. (author), Kessels, W.M.M. (author), Creatore, M. (author)In this work, we report on the atomic layer deposition (ALD) of HfNx thin films by employing CpHf(NMe2)3 as the Hf(IV) precursor and Ar–H2 plasma in combination with external RF substrate biasing as the co-reactant. Following up on our previous results based on an H2 plasma and external RF substrate biasing, here we address the effect of ions...article 2020
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Faraz, T. (author), Arts, K. (author), Karwal, S. (author), Knoops, H.C.M. (author), Kessels, W.M.M. (author)Plasma-enhanced atomic layer deposition (PEALD) has obtained a prominent position in the synthesis of nanoscale films with precise growth control. Apart from the well-established contribution of highly reactive neutral radicals towards film growth in PEALD, the ions generated by the plasma can also play a significant role. In this work, we...article 2019
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Kuang, Y. (author), Zardetto, V. (author), van Gils, R. (author), Karwal, S. (author), Koushik, D. (author), Verheijen, M.A. (author), Black, L.E. (author), Weijtens, C. (author), Veenstra, S.C. (author), Andriessen, H.A.J.M. (author), Kessels, W.M.M. (author), Creatore, M. (author)In this work, we present an extensive characterization of plasma-assisted atomic-layer-deposited SnO2 layers, with the aim of identifying key material properties of SnO2 to serve as an efficient electron transport layer in perovskite solar cells (PSCs). Electrically resistive SnO2 films are fabricated at 50 °C, while a SnO2 film with a low...article 2018