cfaed Seminar Series

cfaed Seminar Series

Prof. Giuseppe Iannaccone , University of Pisa, Italy

Electronics based on heterostructures of 2D materials

26.11.2015 (Thursday) , 13:00 - 14:30
TU Dresden, Hallwachsstraße 3, Seminar Room 115 , Hallwachsstraße 3 , 01069 Dresden

Native graphene has a zero energy gap and it is therefore not suitable as a transistor channel material for digital electronics. However, recent advances based on materials engineering have demonstrated “materials on demand”, with tailored properties. Vertical heterostructures of graphene and 2D materials have been proven to be suitable for FETs and hot-electron transistors exhibiting large current modulation. Inspired by recent progress in the growth of seamless lateral 2D heterostructures, lateral heterostructure (LH)-FETs have been proposed, exhibiting extremely promising switching behavior in terms of leakage current, propagation delay, and power-delay product.
Giuseppe Iannaccone investigates the performance and the scaling perspectives of graphene-based heterostructure FETs against the ITRS requirements for CMOS. He shows that LH-FETs are very promising for high performance logic, down to the 5 nm gate length. On the other hand, vertical heterostructure FETs exhibit intrinsic delay times higher by four orders of magnitude, due to large capacitance and poor electrostatics. He also addresses some fundamental aspects of off-plane transport in heterostructures of 2D materials, showing that new behaviors emerge that are not observed in the well known heterostructures based on III-V and II-VI materials systems.

Giuseppe Iannaccone is Professor of electronics at the University of Pisa, Italy, Fellow of the Institute of Electrical and Electronics Engineers, and Fellow of the American Physical Society. His interests include the fundamentals of transport and noise in nanoelectronic and mesoscopic devices, the development of device modeling and TCAD tools, and the design of extremely low-power circuits and systems for RFID and ambient intelligence Scenarios. He has published more than 170 papers in peer-reviewed journals and more than 130 papers in proceedings of international conferences. Giuseppe Iannaccone has coordinated a few European and National Projects involving multiple partners and has acted as the Principal Investigator in several research projects funded by European and National public agencies and by private organizations.

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