Size effects on the phase stability and switching properties of chemically synthesized HfO2 and Sb-based chalcogenide nanoparticles (C01)

• Subject Area: Electronic Semiconductors, Components and Circuits, Integrated Systems, Sensor Technology, Theoretical Electrical Engineering
• Term: from 2011 to 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 167917811

The goal of Project C1 is to analyze the effect of the three-dimensional confinement on the switching properties of individual resistively switching nanoparticles. As model compound for resistively switching metal oxides we will develop new synthetic routes to obtain HfO2 with variable structure and composition. As nanoparticulate phase change materials we will vary the composition of Sb-based materials to ap-proach the conventional bonding regimes of metallic, covalent and ionic bonding and analyze the inter-play of size and material composition on the crystallization features of the respective materials. Individual NPs will be integrated in lithographically fabricated nanogap devices (fabricated in Z4) as an approach for integrating chemically designed building blocks into nanoelectronic circuitry.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 917: Resistively Switching Chalcogenides for Future Electronics - Structure, Kinetics and Device Scalability: 'Nanoswitches'
• Applicant Institution: Rheinisch-Westfälische Technische Hochschule Aachen
• Project Head: Professor Dr. Ulrich Simon