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Technische Universität München

Resistive switching devices

Left: Illustration of the mechanism of molecular dipolar switching. Application of an external electrical field flips the polar group up or down, resulting in different tunnel currents. Right: Hysteretic current–density vs. voltage characteristics of TiN/monolayer/Ti/Au junctions comprising molecules as shown on the left (red traces) in comparison to a different molecule species (green traces). From: P. Kirsch et al., Small 20, 2308072 (2024). Published open access - CC BY 4.0.

Resistive switching devices have wide applications, ranging from non-volatile memories up to neuromorphic electronics. In our research, we focus on novel fabrications strategies, device architectures and materials for realizing such devices. This includes the controlled bottom-up self-assembly of nanoparticles into higher-order, three dimensional structures. Further, we explore the utilization of liquid-crystal inspired organic molecules. Sandwiched as a monolayer between two solid-state electrodes, an electric field driven dipole reorientation can be achieved within these molecules, causing a resistive switching behavior between two or more distinct states. 

 

References:

  • Maximilian Speckbacher, Michael Rinderle, Oliver Bienek, Ian D. Sharp, Alessio Gagliardi, Marc Tornow, Conductive filament distribution in nano-scale electrochemical metallization cells, Nanoscale (2024), https://doi.org/10.1039/D4NR02870H

  • Peer Kirsch, Julian M. Dlugosch, Takuya Kamiyama, Christian Pfeiffer, Henning Seim, Sebastian Resch, Frank Voges, Itai Lieberman, Abin Nas Nalakath, Yangbiao Liu, Michael Zharnikov, Marc Tornow, Restricting Conformational Space: A New Blueprint for Electrically Switchable Self-Assembled Monolayers, Small (2024) https://doi.org/10.1002/smll.202308072

  • Julian M. Dlugosch, Henning Seim, Achyut Bora, Takuya Kamiyama, Itai Lieberman, Falk May, Florian Müller-Plathe, Alexei Nefedov, Saurav Prasad, Sebastian Resch, Kai Saller, Christian Seim, Maximilian Speckbacher, Frank Voges, Marc Tornow, and Peer Kirsch, Conductance Switching in Liquid Crystal-Inspired Self-Assembled Monolayer Junctions, ACS Appl. Mater. Interfaces 14, 31044−31053 (2022)

  • Mahmoud N. Almadhoun, Maximilian Speckbacher, Brian C. Olsen, Erik J. Luber, Sayed Youssef Sayed, Marc Tornow, and Jillian M. Buriak, Bipolar Resistive Switching in Junctions of Gallium Oxide and p-type Silicon, Nano Lett. 21, 2666 (2021)

  • Maximilian Speckbacher, Matthias Jakob, Markus Döblinger, Jonathan G. C. Veinot, Aras Kartouzian, Ueli Heiz, Marc Tornow, Nonvolatile Memristive Switching in Self-assembled Nanoparticle Dimers, ACS Appl. Electron. Mater. 2, 1099 (2020)

  • M. Speckbacher, M. Rinderle, W. Kaiser, E. A. Osman, D. Chryssikos, A. Cattani-Scholz, J. M. Gibbs, A. Gagliardi, M. Tornow, Directed Assembly of Nanoparticle Threshold Selector Arrays, Adv. Elec. Mat. 5, 1900098 (2019)

 

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